Species List - North America

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Acanthametropodidae
Ameletidae
Ametropodidae
Arthropleidae
Baetidae
Baetiscidae
Behningiidae
Caenidae
Ephemerellidae
Ephemeridae
Euthyplociidae
Heptageniidae
Isonychiidae
Leptohyphidae
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Metretopodidae
Neoephemeridae
Oligoneuriidae
Palingeniidae
Polymitarcyidae
Potamanthidae
Pseudironidae
Siphlonuridae

Current Number of Valid, Extant North American Species [Not Including Multiple Subspecies, Nomina Dubia (dub.), or Recently Extinct Species]: 649 (CAN: 327, MEX: 152, USA: 565)

This list has been compiled and is maintained by Mayfly Central, Purdue University.If you have questions about interpreting the list, see How to read The Mayflies of North America; if you have questions about the family classification see Higher classification.

ACANTHAMETROPODIDAE

• Acanthametropus pecatonica (Burks),1953 [USA:NE,SE]
  • Metreturus pecatonica Burks, 1953 (orig.)
• Analetris eximia Edmunds, 1972 [CAN:NW;USA:NW]

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AMELETIDAE

• Ameletus amador Mayo, 1939 [CAN:NW;USA:NW,SW]
• Ameletus andersoni Zloty, 1996 [USA:NW]
• Ameletus bellulus Zloty, 1996 [CAN:NW;USA:NW,SW]
• Ameletus browni McDunnough, 1933 [CAN:NE;USA:NE]
• Ameletus celer McDunnough, 1934 [CAN:NW;USA:NW,SW]
  • Ameletus alticolus McDunnough, 1934 (syn.)
  • Ameletus celeroides McDunnough, 1934 (syn.)
  • Ameletus tuberculatus McDunnough, 1939 (syn.)
• Ameletus cooki McDunnough, 1929 [CAN:NW;USA:NW,SW]
• Ameletus cryptostimulus Carle, 1978 [CAN:NE;USA:NE,SE]
• Ameletus dissitus Eaton, 1885 [USA:NW]
• Ameletus doddsianus Zloty, 1996 [USA:NW,SW]
  • Ameletus sp. A Allen & Chao, 1981 (syn.)
• Ameletus edmundsi Zloty, 1996 [USA:NW,SW]
• Ameletus exquisitus Eaton, 1885 [USA:NW]
• Ameletus falsus McDunnough, 1938 [USA:NW,SW]
  • Ameletus sp. C Allen & Chao, 1981 (syn.)
• Ameletus imbellis Day, 1952 [USA:NW,SW]
• Ameletus inopinatus Eaton, 1887 [CAN:FN;USA:FN]
  • Ameletus alpinus Bengtsson, 1913 (syn.)
• Ameletus janetae Kondratieff & Meyer, 2010 [USA:SE]
• Ameletus lineatus Traver, 1932 [CAN:NE;USA:NE,SE]
• Ameletus ludens Needham, 1905 [CAN:NE;USA:NE,SE]
• Ameletus majusculus Zloty, 1996 [CAN:NW;USA:NW,SW]
• Ameletus minimus Zloty & Harper, 1999 [USA:NW]
• Ameletus oregonensis McDunnough, 1933 [CAN:NW;USA:NW]
• Ameletus pritchardi Zloty, 1996 [CAN:NW;USA:NW]
• Ameletus quadratus Zloty & Harper, 1999 [USA:NW]
• Ameletus shepherdi Traver, 1934 [CAN:NW;USA:NW,SW]
  • Ameletus querulus McDunnough, 1938 (syn.)
• Ameletus similior McDunnough, 1928 [CAN:NW;USA:NW,SW]
  • Ameletus monta Mayo, 1952 (syn.)
  • Ameletus montis Mayo, 1952 (syn.)
• Ameletus sparsatus McDunnough, 1931 [CAN:FN,NW;USA:NW,SW]
  • Ameletus aequivocus McDunnough, 1934 (syn.)
• Ameletus subnotatus Eaton, 1885 [CAN:NE,NW;USA:NW,SW]
• Ameletus suffusus McDunnough, 1936 [CAN:NW;USA:NW,SW]
• Ameletus tarteri Burrows, 1987 [USA:NE,SE]
• Ameletus tertius McDunnough, 1938 [CAN:NE;USA:NE,SE]
• Ameletus tolae Zloty, 1996 [USA:NW]
• Ameletus validus McDunnough, 1923 [CAN:NW;USA:FN,NW,SW]
• Ameletus vancouverensis McDunnough, 1933 [CAN:NW;USA:NW]
  • Ameletus facilis Day, 1952 (syn.)
• Ameletus velox Dodds, 1923 [CAN:NW;USA:NW,SW]
  • Ameletus connectina McDunnough, 1939 (syn.)
  • Ameletus connectinus McDunnough, 1939 (syn.)
  • Ameletus connectus McDunnough, 1936 (syn.)
• Ameletus vernalis McDunnough, 1924 [CAN:NW;USA:NW,SW]
• Ameletus walleyi Harper, 1970 [CAN:NE;USA:NE]

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AMETROPODIDAE

• Ametropus ammophilus Allen & Edmunds, 1976 [CAN:NW;USA:NW]
• Ametropus neavei McDunnough, 1928 [CAN:FN,NE,NW;USA:NE,NW,SW]
  • Ametropus albrighti Traver, 1935 (syn.)

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ARTHROPLEIDAE

• Arthroplea bipunctata (McDunnough), 1924 [CAN:FN,NE,NW;USA:NE,SE]
  • Cinygma bipunctata McDunnough, 1924 (orig.)

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BAETIDAE

• Acentrella alachua (Berner), 1940 [USA:SE]
  • Baetis alachua Berner, 1940 (orig.)
  • Plauditus alachua (Berner), 1940 (comb.)
  • Pseudocloeon alachua (Berner), 1940 (comb.)
• Acentrella barbarae Jacobus & McCafferty, 2006 [USA:NE,SE]
• Acentrella feropagus Alba-Tercedor & McCafferty, 2000 [CAN:FN,NE;USA:FN]
  • Acentrella lapponica Bengtsson, 1912 (id.)
  • Baetis lapponicus (Bengtsson), 1912 (id.)
• Acentrella insignificans (McDunnough), 1926 [CAN:FN,NW;MEX:SW;USA:FN,NE,NW,SW]
  • Baetis insignificans McDunnough, 1926 (orig.)
• Acentrella lapponica Bengtsson, 1912 [CAN:FN;USA:FN]
  • Baetis lapponicus (Bengtsson), 1912 (comb.)
• Acentrella nadineae McCafferty, Waltz & Webb, 2009 [USA:NE,SE]
• Acentrella parvula (McDunnough), 1932 [CAN:NE,NW;USA:NE,NW,SE]
  • Baetis armillatus McCafferty & Waltz, 1990 (syn.)
  • Plauditus armillatus (McCafferty & Waltz), 1990 (syn.comb.)
  • Plauditus parvulus (McDunnough), 1932 (comb.)
  • Pseudocloeon parvulum McDunnough, 1932 (orig.)
• Acentrella turbida (McDunnough), 1924 [CAN:NE,NW;MEX:SW;USA:FN,NE,NW,SE,SW]
  • Acentrella carolina (Banks), 1924 (syn.)
  • Cloeon carolina Banks, 1924 (syn.)
  • Pseudocloeon carolina (Banks), 1924 (syn.)
  • Pseudocloeon turbidum McDunnough, 1924 (orig.)

• Acerpenna akataleptos (McDunnough), 1926 [CAN:NW]
  • Baetis akataleptos McDunnough, 1926 (orig.)
• Acerpenna macdunnoughi (Ide), 1937 [CAN:NE;USA:NE,SE]
  • Baetis macdunnoughi Ide, 1937 (orig.)
• Acerpenna pygmaea (Hagen), 1861 [CAN:FN,NE,NW;USA:NE,NW,SE,SW]
  • Acerpenna sp. 1 McCafferty & Davis, 1992 (syn.)
  • Acerpenna harti (McDunnough), 1924 (syn.)
  • Baetis harti McDunnough, 1924 (syn.)
  • Baetis pygmaeus (Hagen), 1861 (comb.)
  • Baetis spiethi Berner, 1940 (syn.)
  • Cloe pygmaea Hagen, 1861 (orig.)

• Americabaetis intermedius (Lugo-Ortiz & McCafferty), 1994 [MEX:FS]
  • Acerpenna intermedia Lugo-Ortiz & McCafferty, 1994 (orig.)
• Americabaetis lugoi Waltz & McCafferty, 1999 [MEX:FS]
• Americabaetis pleturus (Lugo-Ortiz & McCafferty), 1994 [MEX:FS,SW;USA:SW]
  • Acerpenna pletura Lugo-Ortiz & McCafferty, 1994 (orig.)

• Apobaetis etowah (Traver), 1935 [CAN:NW;MEX:SW;USA:NE,NW,SE,SW]
  • Apobaetis indeprensus Day, 1955 (syn.)
  • Pseudocloeon etowah Traver, 1935 (orig.)
• Apobaetis futilis (McDunnough), 1931 [CAN:NW;USA:SE,SW]
  • Baetis futile (McDunnough), 1931 (spell.)
  • Baetis futilis (McDunnough), 1931 (comb.)
  • Plauditus futilis (McDunnough), 1931 (comb.)
  • Pseudocloeon futile McDunnough, 1931 (orig.)
• Apobaetis lakota McCafferty, 2000 [USA:NE]

• Baetis adonis Traver, 1935 [MEX:SW;USA:NW,SW]
  • Baetis caelestis Allen & Murvosh, 1983 (syn.)
  • Baetis sp. A Morihara & McCafferty, 1979 (syn.)
• Baetis alius Day, 1954 [USA:NW]
  • Baetis moqui Wiersema, Nelson & Kuehnl, 2005 (syn.)
• Baetis bicaudatus Dodds, 1923 [CAN:FN,NW;USA:FN,NW,SW]
  • Baetis minimus Dodds, 1923 (syn.)
• Baetis brunneicolor McDunnough, 1925 [CAN:NE,NW;USA:NE,NW,SE]
  • Baetis anachris Burks, 1953 (syn.)
  • Baetis hiemalis Leonard, 1950 (syn.)
  • Baetis phyllis Burks, 1953 (syn.)
• Baetis bundyae Lehmkuhl, 1973 [CAN:FN,NE,NW;USA:FN,NE,NW]
  • Baetis bundyi Lehmkuhl, 1973 (spell.)
  • Baetis macani bundyae Lehmkuhl, 1973 (stat.)
• Baetis diablus Day, 1954 [USA:NW]
• Baetis flavistriga McDunnough, 1921 [CAN:FN,NE,NW;MEX:FS,SW;USA:FN,NE,NW,SE,SW]
  • Baetis caurinus Edmunds & Allen, 1957 (syn.)
  • Baetis levitans McDunnough, 1925 (syn.)
  • Baetis nanus McDunnough, 1923 (syn.)
  • Baetis ochris Burks, 1953 (syn.)
  • Baetis sinuosus Navas, 1924 (syn.)
• Baetis foemina McDunnough, 1936 [CAN:FN;USA:FN]
• Baetis hudsonicus Ide, 1937 [CAN:FN,NE,NW]
• Baetis intercalaris McDunnough, 1921 [CAN:NE,NW;USA:NE,NW,SE,SW]
  • Baetis lasallei Banks, 1924 (syn.)
• Baetis magnus McCafferty & Waltz, 1986 [MEX:FS,SW;USA:NW,SW]
  • Baetis libos Allen & Murvosh, 1987 (syn.)
  • Baetis sp. B Morihara & McCafferty, 1979 (syn.)
• Baetis notos Allen & Murvosh, 1987 [MEX:FS;USA:NW,SE,SW]
  • Baetis sp. C Morihara & McCafferty, 1979 (syn.)
• Baetis palisadi Mayo, 1952 [USA:NW,SW]
• Baetis persecutor McDunnough, 1939 [CAN:NW]
  • Baetis persecuta McDunnough, 1939 (spell.)
  • Baetis persecutus McDunnough, 1939 (spell.)
• Baetis phoebus McDunnough, 1923 [CAN:NE;USA:NE,SE]
  • Baetis cingulatus McDunnough, 1925 (syn.)
  • Baetis pallidula McDunnough, 1924 (syn.)
  • Baetis pallidulus McDunnough, 1924 (syn.)
  • Baetis quebecensis Hubbard, 1974 (syn.)
• Baetis piscatoris Traver, 1935 [USA:NW,SW]
• Baetis pluto McDunnough, 1925 [CAN:NE;USA:NE,SE]
• Baetis posticatus (Say), 1823 (dub.) [USA:NE]
  • Cloe posticata (Say), 1823 (comb.)
  • Cloeon posticata Say, 1823 (orig.)
• Baetis rusticans McDunnough, 1925 [CAN:NE;USA:NE]
• Baetis tricaudatus Dodds, 1923 [CAN:FN,NE,NW;MEX:FS,SW;USA:FN,NE,NW,SE,SW]
  • Baetis incertans McDunnough, 1925 (syn.)
  • Baetis intermedius Dodds, 1923 (syn.)
  • Baetis jesmondensis McDunnough, 1938 (syn.)
  • Baetis moffati Dodds, 1923 (syn.spell.)
  • Baetis moffatti Dodds, 1923 (syn.)
  • Baetis sp. No. 1 Traver, 1932 (syn.)
  • Baetis parallelus Banks, 1924 (syn.)
  • Baetis vagans McDunnough, 1925 (syn.)

• Baetodes adustus Cohen & Allen, 1972 [MEX:FS]
• Baetodes alleni McCafferty & Provonsha, 1993 [USA:SW]
• Baetodes arizonensis Koss, 1972 [USA:SW]
  • Baetodes sigillatus Allen & Chao, 1972 (syn.)
• Baetodes bibranchius McCafferty & Provonsha, 1993 [MEX:FS,SW;USA:NW,SW]
• Baetodes caritus Cohen & Allen, 1972 [MEX:SW,FS]
  • Baetodes veracrusensis Mayo, 1972 (syn.)
• Baetodes deficiens Cohen & Allen, 1972 [MEX:FS,SW;USA:SW]
  • Baetodes bellus Mayo, 1972 (syn.)
• Baetodes edmundsi Koss, 1972 [MEX:SW;USA:NW,SW]
• Baetodes fortinensis Mayo, 1972 [MEX:FS]
• Baetodes fuscipes Cohen & Allen, 1972 [MEX:FS,SW]
  • Baetodes furvus Mayo, 1973 (syn.)
• Baetodes inermis Cohen & Allen, 1972 [MEX:FS,SW;USA:SW]
• Baetodes longus Mayo, 1973 [MEX:SW]
• Baetodes obesus Mayo, 1972 [MEX:FS]
• Baetodes pallidus Cohen & Allen, 1972 [MEX:FS]
• Baetodes pictus Cohen & Allen, 1972 [MEX:FS,SW]
• Baetodes tritus Cohen & Allen, 1972 [MEX:FS,SW]
• Baetodes velmae Cohen & Allen, 1978 [MEX:SW]

• Baetopus trishae Waltz, 2002 [USA:SE]

• Barbaetis benfieldi Kennedy, 1985 [USA:SE]

• Callibaetis californicus Banks, 1900 [MEX:FS,SW;USA:NW,SW]
• Callibaetis distinctus Lugo-Ortiz & McCafferty, 1996 [MEX:SW]
• Callibaetis ferrugineus ferrugineus (Walsh), 1862 [CAN:NE;USA:NE,SE]
  • Baetis ferrugineus (Walsh), 1862 (comb.)
  • Callibaetis ferrugineus (Walsh), 1862 (comb.)
  • Cloe ferruginea Walsh, 1862 (orig.)
• Callibaetis ferrugineus hageni Eaton, 1885 [CAN:FN,NW;USA:FN,NW,SW]
  • Baetis tessellata Hagen, 1861 (hom.: B. tessellata Walker, 1853)
  • Callibaetis americanus Banks, 1900 (syn.)
  • Callibaetis carolus Traver, 1935 (syn.)
  • Callibaetis coloradensis Banks, 1900 (syn.)
  • Callibaetis evergreenensis Thew, 1959 (syn.)
  • Callibaetis fusca Dodds, 1923 (syn., spell.)
  • Callibaetis fuscus Dodds, 1923 (syn.)
  • Callibaetis hageni Eaton, 1885 (orig.)
  • Callibaetis hebes Upholt, 1936 (syn.)
  • Callibaetis nigritus Banks, 1918 (syn.)
  • Callibaetis tessellatus (Hagen), 1861 (hom.comb.)
• Callibaetis floridanus Banks, 1900 [MEX:FS,SW;USA:NE,SE,SW]
  • Callibaetis completa Banks, 1930 (syn.)
• Callibaetis fluctuans (Walsh), 1862 [CAN:NE;USA:FN,NE,NW,SE,SW]
  • Baetis fluctuans (Walsh), 1862 (comb.)
  • Callibaetis traverae Upholt, 1937 (syn.)
  • Cloe fluctuans Walsh, 1862 (orig.)
• Callibaetis montanus Eaton, 1885 [MEX:FS,SW;USA:SW]
  • Callibaetis montanus montanus Eaton, 1885 (stat.)
• Callibaetis pallidus Banks, 1900 [CAN:NE,NW;USA:NE,NW,SW]
  • Callibaetis semicostatus Banks, 1914 (syn.)
• Callibaetis pictus (Eaton), 1871 [MEX:FS,SW;USA:NE,NW,SW]
  • Baetis pictus Eaton, 1871 (orig.)
  • Callibaetis centralis Peters, 1959 (syn.)
  • Callibaetis doddsi Traver, 1935 (syn.)
  • Callibaetis pacificus Seemann, 1927 (syn.)
  • Callibaetis signatus Banks, 1918 (syn.)
  • Callibaetis vitrea Dodds, 1923 (syn.)
• Callibaetis pretiosus Banks, 1914 [CAN:NE;USA:NE,SE]
• Callibaetis punctilusus McCafferty & Provonsha, 1993 [MEX:FS,SW;USA:SW]
  • Callibaetis montanus punctilusus McCafferty & Provonsha, 1993 (orig.)
• Callibaetis skokianus Needham, 1903 [CAN:NE,NW;USA:NE]
  • Callibaetis brevicostatus Daggy, 1945 (syn.)
• Callibaetis undatus (Pictet), 1843 (dub.) [MEX:FS]
  • Cloe undata Pictet, 1843 (orig.)
  • Cloeon undata (Pictet), 1843 (comb.)

• Camelobaetidius arriaga (Traver & Edmunds), 1968 [MEX:FS]
  • Dactylobaetis arriaga Traver & Edmunds, 1968 (orig.)
  • Dactylobaetis chiapas Traver & Edmunds, 1968 (syn.)
  • Dactylobaetis jenseni Traver & Edmunds, 1968 (syn.)
  • Camelobaetidius chiapas (Traver & Edmunds), 1968 (syn.)
  • Camelobaetidius jenseni (Traver & Edmunds), 1968 (syn.)
• Camelobaetidius kickapoo McCafferty, 2000 [MEX:FS,SW;USA:NW,SW]
  • Camelobaetidius sp. 1 McCafferty & Davis, 1992 (orig.)
• Camelobaetidius maidu Jacobus & McCafferty, 2005 [MEX:FS,SW;USA:NW,SW]
• Camelobaetidius mexicanus (Traver & Edmunds), 1968 [MEX:FS,SW;USA:NW,SW]
  • Dactylobaetis mexicanus Traver & Edmunds, 1968 (orig.)
• Camelobaetidius musseri (Traver & Edmunds), 1968 [MEX:FS,SW;USA:SE,SW]
  • Camelobaetidius salinus (Allen & Chao), 1978 (syn.)
  • Camelobaetidius sinaloa (Allen & Murvosh), 1987 (syn.)
  • Dactylobaetis musseri Traver & Edmunds, 1968 (orig.)
  • Dactylobaetis salinus Allen & Chao, 1978 (syn.)
  • Dactylobaetis sinaloa Allen & Murvosh, 1987 (syn.)
• Camelobaetidius shepardi Randolph & McCafferty, 2001 [MEX:FS]
• Camelobaetidius variabilis Wiersema, 1998 [MEX:SW;USA:SW]
• Camelobaetidius waltzi McCafferty, 1994 [USA:NE,SW]
• Camelobaetidius warreni (Traver & Edmunds), 1968 [CAN:NW;MEX:FS,SW;USA:NE,NW,SW]
  • Camelobaetidius cepheus (Traver & Edmunds), 1968 (syn.)
  • Camelobaetidius navis (Allen & Chao), 1978 (syn.)
  • Camelobaetidius similis Lugo-Ortiz & McCafferty, 1995 (syn.)
  • Camelobaetidius trivialis (Allen & Chao), 1978 (syn.)
  • Camelobaetidius zenobia (Traver & Edmunds), 1968 (syn.)
  • Dactylobaetis cepheus Traver & Edmunds, 1968 (syn.)
  • Dactylobaetis navis Allen & Chao, 1978 (syn.)
  • Dactylobaetis trivialis Allen & Chao, 1978 (syn.)
  • Dactylobaetis warreni Traver & Edmunds, 1968 (orig.)
  • Dactylobaetis zenobia Traver & Edmunds, 1968 (syn.)

• Centroptilum alamance (Traver), 1932 [USA:NE,SE]
  • Cloeon alamance (Traver), 1932 (comb.)
  • Neocloeon alamance Traver, 1932 (orig.)
• Centroptilum album McDunnough, 1926 [CAN:NE,NW;USA:NE,NW,SE,SW]
  • Centroptilum convexum Ide, 1930 (syn.)
  • Centroptilum walshi McDunnough, 1929 (syn.)
  • Procloeon album (McDunnough), 1926 (comb.)
  • Procloeon convexum (Ide), 1930 (syn.)
  • Procloeon walshi (McDunnough), 1929 (comb.)
  • Procloeon sp. 2 McCafferty & Davis 1992 (syn.)
• Centroptilum asperatum Traver, 1935 [USA:NW,SW]
  • Centroptilum elsa Traver, 1935 (syn.)
  • Centroptilum oreophilum Edmunds, 1954 (syn.)
  • Procloeon asperatum (Traver), 1935 (comb.)
  • Procloeon elsa (Traver), 1935 (syn.)
  • Procloeon oreophilum (Edmunds), 1954 (syn.)
• Centroptilum bifurcatum McDunnough, 1924 [CAN:NE,NW;USA:NE,NW,SE]
  • Centroptilum selanderorum Edmunds, 1954 (syn.)
• Centroptilum conturbatum McDunnough, 1929 [CAN:NE,NW;USA:NE,NW,SW]
  • Procloeon conturbatum (McDunnough), 1929 (comb.)
• Centroptilum minor (McDunnough), 1926 [CAN:NE;USA:NE,SE]
  • Cloeon minor McDunnough, 1926 (orig.)
  • Procloeon minor (McDunnough), 1926 (comb.)
• Centroptilum ozarkensum Wiersema & Burian, 2000 [USA:SE]
• Centroptilum semirufum McDunnough, 1926 [CAN:NE;USA:NE]
• Centroptilum triangulifer (McDunnough), 1931 [CAN:NE;USA:NE,SE,SW]
  • Centroptilum sp. 1 McCafferty & Davis, 1992 (syn.)
  • Cloeon triangulifer McDunnough, 1931 (orig.)
• Centroptilum victoriae McDunnough, 1938 [CAN:NE,NW;USA:NE,NW]

• Cloeodes excogitatus Waltz & McCafferty, 1987 [MEX:FS,SW;USA:NW,SW]
• Cloeodes macrolamellus Waltz & McCafferty, 1987 [MEX:SW;USA:SW]
• Cloeodes peninsulus Waltz & McCafferty, 1987 [MEX:SW;USA:SW]
• Cloeodes waltzi Wiersema & Baumgardner, 2000 [MEX:SW]

• Cloeon dipterum (Linnaeus), 1761 [CAN:NE,NW;USA:FN,NE,SE]
  • Chloeon dipterum (Linnaeus), 1761 (comb.)
  • Cloe diptera (Linnaeus), 1761 (comb.)
  • Cloeon cognatum Stephens, 1835 (syn.)
  • Cloeon inscriptum Bengtsson, 1940 (syn.)
  • Cloeon pallida Leach, 1815 (syn.)
  • Cloeopsis diptera (Linnaeus), 1761 (comb.)
  • Ephemera diptera Linnaeus, 1761 (orig.)

• Diphetor hageni (Eaton), 1885 [CAN:FN,NE,NW;USA:FN,NE,NW,SE,SW]
  • Baetis devinctus Traver, 1935 (syn.)
  • Baetis hageni Eaton, 1885 (renam.)
  • Baetis herodes Burks, 1953 (syn.)
  • Baetis parvus Dodds, 1923 (syn.)
  • Baetis unicolor (Hagen), 1861 (hom.comb.)
  • Cloe unicolor Hagen, 1861 (hom.: C. unicolor Curtis, 1834)
  • Diphetor devinctus (Traver), 1935 (syn.)

• Fallceon eatoni (Kimmins), 1934 [MEX:SW;USA:SW]
  • Baetis eatoni Kimmins, 1934 (orig.)
• Fallceon fortipalpus Lugo-Ortiz & McCafferty, 1994 [MEX:SW]
• Fallceon quilleri (Dodds), 1923 [CAN:NE,NW;MEX:FS,SW;USA:NE,NW,SE,SW]
  • Baetis buenoi Allen, 1985 (syn.)
  • Baetis byblis Allen & Murvosh, 1983 (syn.)
  • Baetis cleptis Burks, 1953 (syn.)
  • Baetis endymion Traver, 1935 (syn.)
  • Baetis erebus Traver, 1935 (syn.)
  • Baetis leechi Day, 1954 (syn.)
  • Baetis quilleri Dodds, 1923 (orig.)
  • Fallceon buenoi (Allen), 1985 (syn.)
  • Fallceon byblis (Allen & Murvosh), 1983 (syn.)
• Fallceon sageae McCafferty, 2008 [MEX:FS]
• Fallceon sonora (Allen & Murvosh), 1987 [MEX:SW;USA:NW,SW]
  • Baetis sonora Allen & Murvosh, 1987 (orig.)
• Fallceon thermophilos (McDunnough), 1926 [USA:NW]
  • Acerpenna sulfurosa (Day), 1954 (syn.)
  • Acerpenna sulfurosus (Day), 1954 (syn. spell)
  • Acerpenna thermophilos (McDunnough), 1926 (comb.)
  • Baetis sulfurosus Day, 1954 (syn.)
  • Baetis thermophilos McDunnough, 1926 (orig.)
  • Fallceon sulfurosus (Day), 1954 (syn.)

• Heterocloeon amplum (Traver), 1932 [MEX:SW;USA:NE,SE,SW]
  • Acentrella ampla Traver, 1932 (orig.)
  • Baetis amplus (Traver), 1932 (comb.)
• Heterocloeon berneri (Muller-Liebenau), 1974 [USA:SE]
  • Rheobaetis berneri Muller-Liebenau, 1974 (orig.)
• Heterocloeon curiosum (McDunnough), 1923 [CAN:NE;USA:NE,SE]
  • Baetis curiosus (McDunnough), 1923 (comb.)
  • Centroptilum curiosum McDunnough, 1923 (orig.)
  • Rheobaetis traverae Muller-Liebenau, 1974 (syn.)
• Heterocloeon frivolum (McDunnough), 1925 [CAN:NE;USA:NE,NW,SE]
  • Baetis frivolus McDunnough, 1925 (orig.)
  • Heterocloeon frivolus (McDunnough), 1925 (spell.)
• Heterocloeon grande (Wiersema & Long), 2000 [USA:SE]
  • Plauditus grandis Wiersema & Long, 2000 (orig.)
• Heterocloeon petersi (Muller-Liebenau), 1974 [USA:SE]
  • Rheobaetis petersi Muller-Liebenau, 1974 (orig.)

• Iswaeon anoka (Daggy), 1945 [CAN:NE,NW;USA:NE,NW,SE]
  • Heterocloeon anoka (Daggy), 1945 (comb.)
  • Pseudocloeon anoka Daggy, 1945 (orig.)
  • Pseudocloeon edmundsi Jensen, 1969 (syn.)
• Iswaeon davidi (Waltz & McCafferty), 2005 [USA:SE]
  • Heterocloeon davidi Waltz & McCafferty, 2005 (orig.)
• Iswaeon rubrolaterale (McDunnough), 1931 [CAN:NW;USA:NW,SE]
  • Baetis rubrolaterale (McDunnough), 1931 (spell.)
  • Baetis rubrolateralis (McDunnough), 1931 (comb.)
  • Heterocloeon rubrolaterale (McDunnough), 1931 (comb.)
  • Plauditus rubrolateralis (McDunnough), 1931 (comb.)
  • Pseudocloeon rubrolaterale McDunnough, 1931 (orig.)

• Kirmaushenkreena zarankoae McCafferty, 2011 [CAN:FN]

• Labiobaetis apache McCafferty & Waltz, 1995 [USA:NW,SW]
  • Pseudocloeon apache (McCafferty & Waltz), 1995 (comb.)
• Labiobaetis dardanus (McDunnough), 1923 [CAN:NE,NW;USA:NE,NW,SE,SW]
  • Baetis dardanus McDunnough, 1923 (orig.)
  • Baetis elachistus Burks, 1953 (syn.)
  • Pseudocloeon dardanum (McDunnough), 1923 (comb.)
• Labiobaetis ephippiatus (Traver), 1935 [CAN:NE;MEX:SW;USA:NE,SE,SW]
  • Acentrella ephippiatus (Traver), 1935 (comb., spell.)
  • Baetis ephippiatus Traver, 1935 (orig.)
  • Pseudocloeon ephippiatum (Traver), 1935 (comb.)
• Labiobaetis frondalis (McDunnough), 1925 [CAN:NE;USA:NE,SE]
  • Baetis australis Traver, 1932 (syn.)
  • Baetis baeticatus Burks, 1953 (syn.)
  • Baetis frondalis McDunnough, 1925 (orig.)
  • Pseudocloeon frondale (McDunnough), 1925 (comb.)
• Labiobaetis longipalpus (Morihara & McCafferty), 1979 [CAN:NE;USA:NE,SE]
  • Baetis longipalpus Morihara & McCafferty, 1979 (orig.)
  • Pseudocloeon longipalpus (Morihara & McCafferty), 1979 (comb.)
• Labiobaetis propinquus (Walsh), 1863 [CAN:FN,NE,NW;USA:NE,NW,SE,SW]
  • Acentrella propinquus (Walsh), 1863 (comb.,spell.)
  • Baetis propinquus (Walsh), 1863 (comb.)
  • Baetis spinosus McDunnough, 1925 (syn.)
  • Cloe propinqua Walsh, 1863 (renam.)
  • Cloe vicina Walsh, 1862 (hom. C. vicina Hagen, 1861)
  • Pseudocloeon propinquum (Walsh), 1863 (comb.)

• Moribaetis macaferti Waltz, 1985 [MEX:FS]
• Moribaetis mimbresaurus McCafferty, 2007 [USA:SW]
• Moribaetis salvini (Eaton), 1885 [MEX:FS]
  • Baetis salvini Eaton, 1885 (orig.)

• Paracloeodes fleeki McCafferty & Lenat, 2004 [USA:SE]
• Paracloeodes lugoi Randolph & McCafferty, 2000 [MEX:FS]
• Paracloeodes minutus (Daggy), 1945 [CAN:NE;MEX:SW;USA:NE,NW,SE,SW]
  • Paracloeodes abditus Day, 1955 (syn.)
  • Pseudocloeon minutum Daggy, 1945 (orig.)

• Plauditus bimaculatus (Berner), 1946 [USA:SE]
  • Baetis bimaculatus (Berner), 1946 (comb.)
  • Pseudocloeon bimaculatum Berner, 1946 (orig.)
  • Pseudocloeon bimaculatus Berner, 1946 (spell.)
• Plauditus cestus (Provonsha & McCafferty), 1982 [CAN:NE,NW;USA:NE,NW,SE]
• Barbaetis cestus (Provonsha & McCafferty), 1982(comb.)
• Pseudocloeon cestum Provonsha & McCafferty, 1982 (orig.)
• Plauditus cingulatus (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Baetis cinctutus McCafferty & Waltz, 1990 (syn.)
  • Plauditus cinctutus (McCafferty & Waltz), 1990 (syn.comb.)
  • Pseudocloeon cingulatum McDunnough, 1931 (orig.)
• Plauditus dubius (Walsh), 1862 [CAN:NE,NW;USA:FN,NE,NW,SE]
  • Baetis dubius (Walsh), 1862 (comb.)
  • Cloe dubia Walsh, 1862 (orig.)
  • Cloeon chlorops McDunnough, 1923 (syn.)
  • Cloeon dubium (Walsh), 1862 (comb.)
  • Pseudocloeon chlorops (McDunnough), 1923 (syn.)
  • Pseudocloeon dubium (Walsh), 1862 (comb.)
• Plauditus elliotti (Daggy), 1945 [CAN:NE;USA:NE]
  • Baetis elliotti (Daggy), 1945 (comb.)
  • Pseudocloeon elliotti Daggy, 1945 (orig.)
  • Pseudocloeon ida Daggy, 1945 (syn.)
• Plauditus gloveri McCafferty & Waltz, 1998 [CAN:NE,NW;USA:NE,NW,SE]
• Plauditus punctiventris (McDunnough), 1923 [CAN:NE,NW;USA:NE,SE,SW]
  • Baetis punctiventris (McDunnough), 1923 (comb.)
  • Baetis sp. 1 McCafferty & Davis, 1992 (syn.)
  • Cloeon punctiventris McDunnough, 1923 (orig.)
  • Pseudocloeon myrsum Burks, 1953 (syn.)
  • Pseudocloeon punctiventris (McDunnough), 1923 (comb.)
• Plauditus texanus Wiersema, 1999 [USA:SW]
• Plauditus veteris (McDunnough), 1924 [USA:NE,SE]
  • Baetis veteris (McDunnough), 1924 (comb.)
  • Pseudocloeon veteris McDunnough, 1924 (orig.)
• Plauditus virilis (McDunnough), 1923 [CAN:NE,NW;MEX:SW;USA:NE,NW,SE,SW]
  • Acentrella sp. 1 Lugo-Ortiz & McCafferty, 1995 (syn.)
  • Acentrella sp. 2 Lugo-Ortiz & McCafferty, 1995 (syn.)
  • Baetis virile (McDunnough), 1923 (comb.spell.)
  • Baetis virilis (McDunnough), 1923 (comb.)
  • Cloeon virilis McDunnough, 1923 (orig.)
  • Pseudocloeon virile (McDunnough), 1923 (comb.)
  • Pseudocloeon virilis (McDunnough), 1923 (comb.spell.)

• Procloeon bellum (McDunnough), 1924 [CAN:NE,NW;USA:NE]
  • Centroptilum bellum McDunnough, 1924 (orig.)
• Procloeon caliginosum (McDunnough), 1925 [CAN:NE]
  • Centroptilum caliginosum McDunnough, 1925 (orig.)
• Procloeon fragile (McDunnough), 1923 [CAN:NE;USA:NE,SE]
  • Centroptilum fragile McDunnough, 1923 (orig.)
• Procloeon inanum (McDunnough), 1924 [CAN:NE,NW]
  • Cloeon inanum McDunnough, 1924 (orig.)
• Procloeon ingens (McDunnough), 1923 [CAN:FN,NE,NW;USA:NE,NW]
  • Cloeon implicatum McDunnough, 1924 (syn.)
  • Cloeon ingens McDunnough, 1923 (orig.)
  • Procloeon implicatum (McDunnough), 1924 (syn.)
• Procloeon insignificans (McDunnough), 1925 [CAN:NE]
  • Cloeon insignificans McDunnough, 1925 (orig.)
• Procloeon intermediale (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Centroptilum intermediale McDunnough, 1931 (orig.)
• Procloeon mendax (Walsh), 1862 [CAN:NE,NW;USA:NE]
  • Cloe mendax Walsh, 1862 (orig.)
  • Cloeon mendax (Walsh), 1862 (comb.)
• Procloeon nelsoni Wiersema, 1999 [USA:SE,SW]
• Procloeon ozburni (McDunnough), 1924 [CAN:NE;USA:NE]
  • Centroptilum ozburni McDunnough, 1924 (orig.)
• Procloeon pennulatum (Eaton), 1870 [CAN:FN,NE,NW;USA:FN,NE,NW,SE,SW]
  • Centroptilum infrequens McDunnough, 1924 (syn.)
  • Centroptilum pennulatum Eaton, 1870 (orig.)
  • Pseudocentroptilum pennulatum (Eaton), 1870 (comb.)
• Procloeon quaesitum (McDunnough), 1931 [CAN:NE,NW;USA:NE,SE]
  • Centroptilum quaesitum McDunnough, 1931 (orig.)
• Procloeon rivulare (Traver), 1935 [CAN:NE;USA:NE,NW,SE,SW]
  • Centroptilum rivulare Traver, 1935 (orig.)
• Procloeon rubropictum (McDunnough), 1923 [CAN:NE,NW;USA:NE,SE]
  • Cloeon rubropictum McDunnough, 1923 (orig.)
• Procloeon rufostrigatum (McDunnough), 1924 [CAN:NE,NW;USA:NE,SE]
  • Centroptilum bistrigatum Daggy, 1945 (syn.)
  • Centroptilum hobbsi Berner, 1941 (syn.)
  • Centroptilum rufostrigatum McDunnough, 1924 (orig.)
  • Procloeon hobbsi (Berner), 1941 (syn.)
• Procloeon simile (McDunnough), 1924 [CAN:NE;USA:NE,SE]
  • Centroptilum simile McDunnough, 1924 (orig.)
  • Centroptilum similie McDunnough, 1924 (spell.)
• Procloeon simplex (McDunnough), 1925 [CAN:NE,NW;USA:NE,SE]
  • Cloeon simplex McDunnough, 1925 (orig.)
• Procloeon texanum McCafferty & Provonsha, 1993 [USA:NE,SW]
  • Procloeon distinctum Wiersema, 1999 (syn.)
• Procloeon venosum (Traver), 1935 [USA:NW,SW]
  • Centroptilum venosum Traver, 1935 (orig.)
• Procloeon vicinum (Hagen), 1861 [CAN:NE;USA:SE]
  • Cloe vicina Hagen, 1861 (orig.)
  • Cloeon vicinum Hagen, 1861 (emend.)
• Procloeon viridoculare (Berner), 1940 [CAN:NE,NW;USA:NE,NW,SE,SW]
  • Centroptilum viridocularis Berner, 1940 (orig.)
  • Procloeon irrubrum Lowen & Flannagan, 1992 (syn.)
  • Procloeon viridocularis (Berner), 1940 (comb., spell.)

• Pseudocentroptiloides morihari Wiersema & McCafferty, 1998 [USA:SW]
  • Centroptilum sp. 2 McCafferty & Davis, 1992 (syn.)
• Pseudocentroptiloides usa Waltz & McCafferty, 1989 [CAN:NE;USA:NE,SE]

• Varipes lasiobrachius Lugo-Ortiz & McCafferty, 1998 [MEX:FS]

• Waynokiops dentatogriphus Hill, Pfeiffer & Jacobus, 2010 [USA:NE,SE]

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BAETISCIDAE

• Baetisca becki Schneider & Berner, 1963 [USA:SE]
• Baetisca berneri Tarter & Kirchner, 1978 [USA:NE,SE]
• Baetisca callosa Traver, 1931 (dub.) [CAN:NE;USA:SE]
• Baetisca carolina Traver, 1931 [CAN:NE;USA:NE,SE]
  • Baetisca thomsenae Traver, 1937 (syn.)
• Baetisca columbiana Edmunds, 1960 [CAN:NW;USA:NW]
• Baetisca escambiensis Berner, 1955 [USA:SE]
• Baetisca gibbera Berner, 1953 [USA:SE]
• Baetisca lacustris McDunnough, 1932 [CAN:NE,NW;USA:NE,NW,SE]
  • Baetisca bajkovi Neave, 1934 (syn.)
• Baetisca laurentina McDunnough, 1932 [CAN:FN,NE,NW;USA:NE,SE]
• Baetisca obesa (Say), 1839 [CAN:FN,NE;USA:NE,SE]
  • Baetis obesa Say, 1839 (orig.)
• Baetisca rogersi Berner, 1940 [USA:SE]
• Baetisca rubescens (Provancher), 1878 [CAN:NE;USA:NE,SE]
  • Baetis rubescens (Provancher), 1878 (comb.)
  • Cloe rubescens Provancher, 1878 (orig.)

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BEHNINGIIDAE

• Dolania americana Edmunds & Traver, 1959 [USA:NE,SE]

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CAENIDAE

• Amercaenis cusabo Provonsha & McCafferty, 2006 [USA:SE]
• Amercaenis ridens (McDunnough), 1931 [USA:NE,NW,SW]
  • Caenis ridens McDunnough, 1931 (orig.)

• Brachycercus berneri Soldan, 1986 [USA:SE]
  • Brachycercus floridicola Soldan, 1986 (syn.)
  • Brachycercus sp. A Berner, 1950 (syn.)
• Brachycercus harrisella Curtis, 1834 [CAN:NE,NW;USA:FN,NE,NW]
  • Brachycercus arcticus Soldan, 1986 (syn.)
  • Brachycercus edmundsi Soldan, 1986 (syn.)
  • Brachycercus magnus Tshernova, 1952 (syn.)
  • Brachycercus pallidus Tshernova, 1928 (syn.)
  • Brachycercus YUa Quan, Bae, Jung & Lee, 2002 (syn.)
  • Caenis harrisella (Curtis), 1834 (comb.)
  • Caenis pennata Stephens, 1835 (syn.)
  • Eurycaenis harrisella (Curtis), 1834 (comb.)
• Brachycercus nitidus (Traver), 1932 [CAN:NE;USA:NE,SE]
  • Eurycaenis nitida Traver, 1932 (orig.)
• Brachycercus ojibwe Sun & McCafferty, 2008 [CAN:NE;USA:NE]

• Caenis amica Hagen, 1861 [CAN:NE,NW;MEX:SW;USA:FN,NE,NW,SE,SW]
  • Caenis simulans McDunnough, 1931 (syn.)
• Caenis anceps Traver, 1935 [MEX:FS;USA:NE,SE]
• Caenis arwini McCafferty & Davis, 2001 [USA:SW]
• Caenis bajaensis Allen & Murvosh, 1983 [MEX:FS,SW;USA:NW,SW]
• Caenis candida Harper & Harper, 1981 [CAN:NE]
• Caenis diminuta diminuta Walker, 1853 [CAN:NE;USA:NE,SE]
  • Caenis diminuta Walker, 1853 (orig.)
• Caenis eglinensis Pescador & Richard, 2006 [USA:SE]
• Caenis hilaris (Say), 1839 [CAN:NE,NW;USA:NE,SE,SW]
  • Ephemera hilaris Say, 1839 (orig.)
• Caenis latipennis Banks, 1907 [CAN:NE,NW;MEX:FS,SW;USA:NE,NW,SE,SW]
  • Caenis delicata Traver, 1935 (syn.)
  • Caenis forcipata McDunnough, 1931 (syn.)
  • Caenis gigas Burks, 1953 (syn.)
  • Caenis jocosa McDunnough, 1931 (syn.)
• Caenis macafferti Provonsha, 1990 [USA:NE,SE]
• Caenis punctata McDunnough, 1931 [CAN:NE;MEX:SW;USA:NE,NW,SE,SW]
• Caenis tardata McDunnough, 1931 [CAN:NE,NW;USA:NE,NW,SE]
• Caenis youngi Roemhild, 1984 [CAN:FN,NE,NW;USA:FN,NE,NW,SW]

• Cercobrachys cree Sun, Webb & McCafferty, 2002 [CAN:NW;USA:NE,NW]
• Cercobrachys etowah Soldan, 1986 [USA:NE,SE]
• Cercobrachys fox Sun & McCafferty, 2008 [USA:NE]
• Cercobrachys lilliei Sun & McCafferty, 2008 [USA:NE]
• Cercobrachys pomeiok Sun & McCafferty, 2008 [USA:SE]
• Cercobrachys serpentis Soldan, 1986 [USA:NW]
• Cercobrachys winnebago Sun & McCafferty, 2008 [USA:NE,SW]

• Latineosus cibola Sun & McCafferty, 2008 [MEX:SW;USA:SW]

• Sparbarus choctaw Sun & McCafferty, 2008 [USA:SE]
• Sparbarus coushatta Sun & McCafferty, 2008 [USA:SE,SW]
• Sparbarus flavus (Traver), 1935 (dub.) [USA:SE]
  • Brachycercus flavus Traver, 1935 (orig.)
• Sparbarus lacustris (Needham), 1918 [CAN:NE;USA:NE,SE,SW]
  • Brachycercus idei (Lestage), 1931 (syn.)
  • Brachycercus lacustris (Needham), 1918 (comb.)
  • Brachycercus pallidus (Ide), 1930 (syn.)
  • Caenis lacustris Needham, 1918 (orig.)
  • Eurycaenis idei Lestage, 1931 (syn.)
  • Eurycaenis lacustris (Needham), 1918 (comb.)
  • Eurycaenis pallida Ide, 1930 (syn.)
• Sparbarus maculatus (Berner), 1946 [CAN:NE;USA:NE,SE,SW]
  • Brachycercus maculatus Berner, 1946 (orig.)
  • Brachycercus pini Soldan, 1986 (syn.)
• Sparbarus miccosukee Sun & McCafferty, 2008 [USA:SE]
• Sparbarus nasutus (Soldan), 1986 [USA:NE,SE]
  • Brachycercus nasutus Soldan, 1986 (orig.)

• Susperatus prudens (McDunnough), 1931 [CAN:NW;USA:NE,NW,SE]
  • Brachycercus prudens (McDunnough), 1931 (comb.)
  • Eurycaenis prudens McDunnough, 1931 (orig.)
• Susperatus tonkawa Sun & McCafferty, 2008 [USA:NW,SW]
• Susperatus tuberculatus (Soldan), 1986 [USA:NW]
  • Brachycercus tuberculatus Soldan, 1986 (orig.)

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EPHEMERELLIDAE

• Attenella attenuata (McDunnough), 1925 [CAN:NE;USA:NE,SE]
  • Ephemerella attenuata McDunnough, 1925 (orig.)
  • Ephemerella hirsuta Berner, 1946 (syn.)
• Attenella delantala (Mayo), 1952 [USA:NW,SW]
  • Ephemerella delantala Mayo, 1952 (orig.)
• Attenella margarita (Needham), 1927 [CAN:NE,NW;USA:NE,NW,SE,SW]
  • Ephemerella margarita Needham, 1927 (orig.)
• Attenella soquele (Day), 1954 [USA:NW,SW]
  • Ephemerella soquele Day, 1954 (orig.)

• Caudatella edmundsi (Allen), 1959 [USA:NW,SW]
  • Ephemerella edmundsi Allen, 1959 (orig.)
• Caudatella columbiella (McDunnough), 1935 [CAN:NW;USA:NW,SW]
  • Caudatella heterocaudata californica (Allen & Edmunds), 1961 (syn.)
  • Ephemerella columbiella McDunnough, 1935 (orig.)
  • Ephemerella heterocaudata californica Allen & Edmunds, 1961 (syn.)
• Caudatella heterocaudata (McDunnough), 1929 [USA:NW]
  • Caudatella heterocaudata circia (Allen & Edmunds), 1961 (syn.)
  • Caudatella heterocaudata heterocaudata (McDunnough), 1929 (stat.)
  • Ephemerella heterocaudata circia Allen & Edmunds, 1961 (syn.)
  • Ephemerella heterocaudata heterocaudata McDunnough, 1929 (stat.)
• Caudatella hystrix (Traver), 1934 [CAN:NW;USA:NW,SW]
  • Caudatella cascadia (Allen & Edmunds), 1961 (syn.)
  • Ephemerella cascadia Allen & Edmunds, 1961 (syn.)
  • Ephemerella hystrix Traver, 1934 (orig.)
  • Ephemerella spinosa Mayo, 1951 (syn.)
• Caudatella jacobi (McDunnough), 1939 [CAN:NW;USA:FN,NW]
  • Ephemerella jacobi McDunnough, 1939 (orig.)
  • Ephemerella orestes Allen & Edmunds, 1961 (syn.)

• Caurinella idahoensis Allen, 1984 [USA:NW]

• Dannella lita (Burks), 1949 [CAN:NE,NW;USA:NE,SE]
  • Ephemerella lita Burks, 1949 (orig.)
  • Timpanoga lita (Burks), 1949 (comb.)
• Dannella provonshai (McCafferty), 1977 [USA:NE,SE]
  • Ephemerella provonshai McCafferty, 1977 (orig.)
  • Timpanoga provonshai (McCafferty), 1977 (comb.)
• Dannella simplex (McDunnough), 1925 [CAN:FN,NE,NW;USA:NE,SE]
  • Ephemerella simplex McDunnough, 1925 (orig.)
  • Timpanoga simplex (McDunnough), 1925 (comb.)

• Dentatella coxalis (McDunnough), 1926 [CAN:NE;USA:NE]
  • Dannella bartoni (Allen), 1977 (syn.)
  • Dentatella bartoni (Allen), 1977 (syn.)
  • Dentatella danutae McCafferty, 2000 (syn.)
  • Ephemerella bartoni Allen, 1977 (syn.)
  • Ephemerella coxalis McDunnough, 1926 (orig.)
  • Eurylophella bartoni (Allen), 1977 (syn.)
  • Eurylophella coxalis (McDunnough), 1926 (comb.)

• Drunella allegheniensis (Traver), 1934 [USA:SE]
  • Ephemerella allegheniensis Traver, 1934 (orig.)
• Drunella coloradensis (Dodds), 1923 [CAN:FN,NW;MEX:SW;USA:FN,NW,SW]
  • Ephemerella coloradensis Dodds, 1923 (orig.)
  • Ephemerella wilsoni Mayo, 1952 (syn.)
• Drunella cornuta (Morgan), 1911 [CAN:NE;USA:NE,SE]
  • Ephemerella cornuta Morgan, 1911 (orig.)
  • Ephemerella depressa Ide, 1930 (syn.)
• Drunella cornutella (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Ephemerella cornutella McDunnough, 1931 (orig.)
• Drunella doddsii (Needham), 1927 [CAN:FN,NW;USA:FN,NW,SW]
  • Drunella doddsi (Needham), 1927 (spell.)
  • Ephemerella doddsi Needham, 1927 (comb.,spell.)
  • Ephemerella doddsii Needham, 1927 (orig.)
• Drunella flavilinea (McDunnough), 1926 [CAN:NW;MEX:SW;USA:NW,SW]
  • Ephemerella flavilinea McDunnough, 1926 (orig.)
  • Ephemerella lapidula McDunnough, 1935 (syn.)
• Drunella grandis flavitincta (McDunnough), 1934 [USA:NW]
  • Ephemerella flavitincta McDunnough, 1934 (orig.)
  • Ephemerella grandis flavitincta McDunnough, 1934 (stat.)
• Drunella grandis grandis (Eaton), 1884 [USA:FN,NW,SW]
  • Drunella grandis (Eaton), 1884 (comb.)
  • Ephemerella glacialis carsona Day, 1952 (syn.)
  • Ephemerella grandis Eaton, 1884 (orig.)
  • Ephemerella grandis grandis Eaton, 1884 (stat.)
  • Ephemerella sp. No. 1 Mayo, 1952 (syn.)
• Drunella grandis ingens (McDunnough), 1934 [CAN:FN,NW;USA:NW,SW]
  • Ephemerella glacialis Traver, 1934 (syn.)
  • Ephemerella glacialis glacialis Traver, 1934 (syn.)
  • Ephemerella grandis ingens McDunnough, 1934 (stat.)
  • Ephemerella ingens McDunnough, 1934 (orig.)
  • Ephemerella proserpina Traver, 1934 (syn.)
  • Ephemerella yosemite Traver, 1934 (syn.)
• Drunella lata (Morgan), 1911 [CAN:NE;USA:NE,SE]
  • Drunella longicornis (Traver), 1932 (syn.)
  • Ephemerella inflata McDunnough, 1926 (syn.)
  • Ephemerella lata Morgan, 1911 (orig.)
  • Ephemerella longicornis Traver, 1932 (syn.)
• Drunella pelosa (Mayo), 1951 [CAN:NW;USA:NW,SW]
  • Ephemerella pelosa Mayo, 1951 (orig.)
• Drunella spinifera (Needham), 1927 [CAN:FN,NW;USA:FN,NW,SW]
  • Ephemerella autumnalis McDunnough, 1934 (syn.)
  • Ephemerella sierra Mayo, 1952 (syn.)
  • Ephemerella spinifera Needham, 1927 (orig.)
• Drunella tuberculata (Morgan), 1911 [CAN:NE;USA:NE,SE]
  • Drunella conestee (Traver), 1932 (syn.)
  • Ephemerella cherokee Traver, 1937 (syn.)
  • Ephemerella conestee Traver, 1932 (syn.)
  • Ephemerella tuberculata Morgan, 1911 (orig.)
• Drunella walkeri (Eaton), 1884 [CAN:NE;USA:NE,SE]
  • Baetis fuscata Walker, 1853 (hom.: B. fuscata Stephens, 1835)
  • Drunella wayah (Traver), 1932 (syn.)
  • Ephemerella bispina Needham, 1905 (syn.)
  • Ephemerella fuscata (Walker), 1853 (hom.comb.)
  • Ephemerella walkeri Eaton, 1884 (renam.)
  • Ephemerella wayah Traver, 1932 (syn.)

• Ephemerella alleni Jensen & Edmunds, 1966 [USA:NW]
• Ephemerella apopsis McCafferty, 1992 [USA:NW]
• Ephemerella aurivillii (Bengtsson), 1908 [CAN:FN,NE,NW;USA:FN,NE,NW,SW]
  • Chitonophora aurivillii Bengtsson, 1908 (orig.)
  • Cincticostella ezoensis (Gose), 1980 (syn.)
  • Ephemerella aurivilliusi (Bengtsson), 1908 (spell.)
  • Ephemerella aroni Eaton, 1908 (syn.)
  • Ephemerella aronii Eaton, 1908 (syn.)
  • Ephemerella concinnata Traver, 1934 (syn.)
  • Ephemerella ezoensis Gose, 1980 (syn.)
  • Ephemerella nN Imanishi, 1940 (syn.)
  • Ephemerella norda McDunnough, 1924 (syn.)
  • Ephemerella taeniata Tshernova, 1952 (syn.)
• Ephemerella catawba Traver, 1932 [USA:NE,SE]
• Ephemerella consimilis Walsh, 1862 (dub.) [USA:NE]
• Ephemerella dorothea dorothea Needham, 1908 [CAN:NE;USA:NE,SE]
  • Ephemerella dorothea Needham, 1908 (orig.)
• Ephemerella dorothea infrequens McDunnough, 1924 [CAN:NW;USA:FN,NW,SW]
  • Ephemerella infrequens McDunnough, 1924 (orig.)
  • Ephemerella mollitia Seemann, 1927 (syn.)
• Ephemerella excrucians Walsh, 1862 [CAN:FN,NE,NW;USA:NE,NW,SE,SW]
  • Ephemerella argo Burks, 1947 (syn.)
  • Ephemerella crenula Allen & Edmunds, 1965 (syn.)
  • Ephemerella excurcians Walsh, 1862 (spell.)
  • Ephemerella inermis Eaton, 1884 (syn.)
  • Ephemerella lacustris Allen & Edmunds, 1965 (syn.)
  • Ephemerella ora Burks, 1949 (syn.)
  • Ephemerella rama Allen, 1968 (syn.)
  • Ephemerella rossi Allen & Edmunds, 1965 (syn.)
  • Ephemerella semiflava McDunnough, 1926 (syn.)
• Ephemerella floripara McCafferty, 1985 [USA:SE]
• Ephemerella hispida Allen & Edmunds, 1965 [USA:SE]
• Ephemerella invaria (Walker), 1853 [CAN:FN,NE;USA:NE,SE]
  • Baetis invaria Walker, 1853 (orig.)
  • Chitonophora vernalis (Banks), 1914 (syn.)
  • Ephemerella choctawhatchee Berner, 1946 (syn.)
  • Ephemerella femenina Needham, 1924 (syn.spell.)
  • Ephemerella feminina Needham, 1924 (syn.)
  • Ephemerella fratercula Needham, 1925 (syn.)
  • Ephemerella inconstans Traver, 1932 (syn.)
  • Ephemerella rotunda Morgan, 1911 (syn.)
  • Ephemerella simila Allen & Edmunds, 1965 (syn.)
  • Ephemerella vernalis Banks, 1914 (syn.)
• Ephemerella maculata Traver, 1934 [CAN:FN;USA:NW,SW]
  • Ephemerella euterpe Traver, 1934 (syn.)
• Ephemerella molita McDunnough, 1930 (dub.) [CAN:NE]
• Ephemerella mucronata (Bengtsson), 1909 [CAN:FN,NW;USA:NW]
  • Chitonophora krieghoffi Ulmer, 1920 (syn.)
  • Chitonophora mucronata Bengtsson, 1909 (orig.)
  • Chitonophora mucronata unicolorata Ikonomov, 1961 (syn.)
  • Chitonophora sp. nympha unicolorata Ikonomov, 1961 (syn.)
  • Ephemerella krieghoffi (Ulmer), 1920 (syn.)
  • Ephemerella krieghoffi intermedia Keffermuller, 1979 (syn.)
  • Ephemerella moffatae Allen, 1977 (syn.)
  • Ephemerella mucronata unicolorata (Ikonomov), 1961 (syn.)
  • Ephemerella sp. nympha unicolorata (Ikonomov), 1961 (syn.)
  • Ephemerella unicolorata (Ikonomov), 1961 (syn.)
• Ephemerella needhami McDunnough, 1925 [CAN:NE,NW;USA:NE,SE]
• Ephemerella nuda Tshernova, 1949 [USA:FN]
  • Ephemerella thymali Tshernova, 1952 (syn.)
  • Ephemerella verrucosa Kluge, 1980 (syn.)
• Ephemerella subvaria McDunnough, 1931 [CAN:NE;USA:NE,SE]
• Ephemerella tibialis McDunnough, 1924 [CAN:FN,NW;USA:FN,NW,SW]
  • Ephemerella angusta Traver, 1934 (syn.)
  • Ephemerella angustata Traver, 1934 (spell. syn.)
  • Ephemerella sequoia Allen & Collins, 1968 (syn.)
  • Serratella sequoia (Allen & Collins), 1968 (syn.)
  • Serratella tibialis (McDunnough), 1924 (comb.)
• Ephemerella unicornis Needham, 1905 (dub.) [USA:NE]
• Ephemerella velmae Allen & Edmunds, 1963 [USA:NW,SW]
  • Serratella velmae (Allen & Edmunds), 1963 (comb.)
• Ephemerella verruca Allen & Edmunds, 1965 [USA:NW]

• Eurylophella aestiva (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Ephemerella aestiva McDunnough, 1931 (orig.)
• Eurylophella bicolor (Clemens), 1913 [CAN:FN,NE,NW;USA:NE,SE]
  • Ephemerella bicolor Clemens, 1913 (orig.)
• Eurylophella bicoloroides (McDunnough), 1938 [CAN:NE;USA:NE]
  • Ephemerella bicoloroides McDunnough, 1938 (orig.)
• Eurylophella doris (Traver), 1934 [USA:SE]
  • Ephemerella doris Traver, 1934 (orig.)
  • Ephemerella trilineata Berner, 1946 (syn.)
• Eurylophella enoensis Funk, 1994 [CAN:NE;USA:NE,SE]
• Eurylophella funeralis (McDunnough), 1925 [CAN:NE;USA:NE,SE]
  • Ephemerella funeralis McDunnough, 1925 (orig.)
• Eurylophella lodi (Mayo), 1952 [CAN:NW;USA:NW]
  • Ephemerella lodi Mayo, 1952 (orig.)
• Eurylophella lutulenta (Clemens), 1913 [CAN:NE;USA:NE,SE]
  • Ephemerella lineata Clemens, 1913 (syn.)
  • Ephemerella lutulenta Clemens, 1913 (orig.)
• Eurylophella macdunnoughi Funk, 1994 [USA:NE,SE]
• Eurylophella minimella (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Ephemerella minimella McDunnough, 1931 (orig.)
• Eurylophella oviruptis Funk, 2008 [USA:SE]
• Eurylophella poconoensis Funk, 1994 [USA:NE]
• Eurylophella prudentalis (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Ephemerella prudentalis McDunnough, 1931 (orig.)
• Eurylophella temporalis (McDunnough), 1924 [CAN:FN,NE,NW;USA:NE,SE]
  • Ephemerella temporalis McDunnough, 1924 (orig.)
• Eurylophella verisimilis (McDunnough), 1930 [CAN:NE;USA:NE,SE]
  • Ephemerella verisimilis McDunnough, 1930 (orig.)
  • Eurylophella versimilis (McDunnough), 1930 (spell.comb.)

• Matriella teresa (Traver), 1934 [CAN:NW;USA:NW,SW]
  • Ephemerella cognata Traver, 1934 (syn.)
  • Ephemerella teresa Traver, 1934 (orig.)
  • Serratella teresa (Traver), 1934 (comb.)

• Penelomax septentrionalis (McDunnough), 1925 [CAN:NE;USA:NE,SE]
  • Ephemerella septentrionalis McDunnough, 1925 (orig.)

• Serratella frisoni (McDunnough), 1927 [USA:NE,SE]
  • Ephemerella frisoni McDunnough, 1927 (orig.)
• Serratella levis (Day), 1954 [USA:NW,SW]
  • Ephemerella levis Day, 1954 (orig.)
  • Ephemerella sp. No. 2 Mayo, 1952 (syn.)
• Serratella micheneri (Traver), 1934 [MEX:SW;USA:NW,SW]
  • Ephemerella altana Allen, 1968 (syn.)
  • Ephemerella micheneri Traver, 1934 (orig.)
• Serratella serrata (Morgan), 1911 [CAN:NE,NW;USA:NE,SE]
  • Ephemerella carolina Berner & Allen, 1961 (syn.)
  • Ephemerella serrata Morgan, 1911 (orig.)
  • Ephemerella sordida McDunnough, 1925 (syn.)
  • Ephemerella spiculosa Berner & Allen, 1961 (syn.)
  • Serratella carolina (Berner & Allen), 1961 (syn.)
  • Serratella sordida (McDunnough), 1925 (syn.)
  • Serratella spiculosa (Berner & Allen), 1961 (syn.)
• Serratella serratoides (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Ephemerella serratoides McDunnough, 1931 (orig.)

• Teloganopsis deficiens (Morgan), 1911 [CAN:NE;USA:NE,SE]
  • Ephemerella atrescens McDunnough, 1925 (syn.)
  • Ephemerella deficiens Morgan, 1911 (orig.)
  • Serratella deficiens (Morgan), 1911 (comb.)

• Timpanoga hecuba hecuba (Eaton), 1884 [CAN:NW;USA:NW,SW]
  • Ephemerella hecuba Eaton, 1884 (orig.)
  • Ephemerella hecuba hecuba Eaton, 1884 (stat.)
• Timpanoga hecuba pacifica (Allen & Edmunds), 1959 [USA:NW]
  • Ephemerella hecuba pacifica Allen & Edmunds, 1959 (orig.)

• Tsalia berneri (Allen & Edmunds), 1958 [USA:SE]
  • Ephemerella berneri Allen & Edmunds, 1958 (orig.)

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EPHEMERIDAE

• Ephemera blanda Traver, 1932 [CAN:NE;USA:SE]
  • Ephemera triplex Traver, 1935 (syn.)
• Ephemera compar Hagen, 1875 [USA:NW] (recently extinct)
• Ephemera guttulata Pictet, 1843 [CAN:NE;USA:NE,SE]
• Ephemera simulans Walker, 1853 [CAN:FN,NE,NW;USA:NE,NW,SE,SW]
  • Ephemera decora Walker, 1853 (syn.)
  • Ephemera natata (Walker), 1853 (syn.)
  • Palingenia natata Walker, 1853 (syn.)
• Ephemera traverae Spieth, 1938 [USA:SE]
  • Ephemera traveri Spieth, 1938 (spell.)
• Ephemera varia Eaton, 1883 [CAN:NE;USA:NE,SE]

• Hexagenia albivitta (Walker), 1853 [MEX:FS]
  • Baetis albivitta Walker, 1853 (orig.)
  • Hexagenia albivittata (Walker), 1853 (spell.)
  • Hexagenia benedicta Navas, 1922 (syn.)
  • Hexagenia dominans Navas, 1936 (syn.)
  • Palingenia continua Eaton, 1860 (syn.)
  • Palingenia dorsigera Hagen, 1861 (syn.nud.)
• Hexagenia atrocaudata McDunnough, 1924 [CAN:NE;USA:NE,SE]
• Hexagenia bilineata (Say), 1824 [CAN:NE;MEX:FS,SW;USA:NE,SE,SW]
  • Baetis bilineata Say, 1824 (orig.)
  • Palingenia bilineata (Say), 1824 (comb.)
• Hexagenia limbata (Serville), 1829 [CAN:FN,NE,NW;MEX:FS,SW;USA:NE,NW,SE,SW]
  • Ephemera limbata Serville, 1829 (orig.)
  • Hexagenia affiliata McDunnough, 1927 (syn.)
  • Hexagenia californica Upholt, 1937 (syn.)
  • Hexagenia carolina Traver, 1931 (syn.)
  • Hexagenia elegans Traver, 1931 (syn.)
  • Hexagenia kanuga Traver, 1937 (syn.)
  • Hexagenia marilandica Traver, 1931 (syn.)
  • Hexagenia mingo Traver, 1931 (syn.)
  • Hexagenia munda Eaton, 1883 (syn.)
  • Hexagenia occulta (Walker), 1853 (syn.)
  • Hexagenia pallens Traver, 1935 (syn.)
  • Hexagenia rosacea Traver, 1931 (syn.)
  • Hexagenia variabilis Eaton, 1883 (syn.)
  • Hexagenia venusta Eaton, 1883 (syn.)
  • Hexagenia viridescens (Walker), 1853 (syn.)
  • Hexagenia weewa Traver, 1931 (syn.)
  • Palingenia limbata (Serville), 1829 (comb.)
  • Palingenia occulta Walker, 1853 (syn.)
  • Palingenia viridescens Walker, 1853 (syn.)
• Hexagenia mexicana Eaton, 1883 [MEX:FS]
• Hexagenia orlando Traver, 1931 [USA:SE]
• Hexagenia rigida McDunnough, 1924 [CAN:NE;USA:NE,SE]
  • Hexagenia form falcata Needham, 1920 (syn.nud.)

• Litobrancha recurvata (Morgan), 1913 [CAN:NE;USA:NE,SE]
  • Hexagenia recurrata Morgan, 1913 (spell.)
  • Hexagenia recurvata Morgan, 1913 (orig.)

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EUTHYPLOCIIDAE

• Euthyplocia hecuba (Hagen), 1861 [MEX:FS,SW]
  • Palingenia hecuba Hagen, 1861 (orig.)

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HEPTAGENIIDAE

• Anepeorus rusticus McDunnough, 1925 [CAN:NW;USA:NW]
  • Acanthomola pubescens Whiting & Lehmkuhl, 1987 (syn.)

• Cinygma dimicki McDunnough, 1934 [USA:NW]
• Cinygma integrum Eaton, 1885 [CAN:NW;USA:NW,SW]
• Cinygma lyriforme (McDunnough), 1924 [CAN:NW;USA:FN,NW,SW]
  • Cinygma lyriformis (McDunnough), 1924 (spell.)
  • Cinygma petersoni (Lestage), 1930 (syn.)
  • Ecdyonurus lyriformis McDunnough, 1924 (orig.)
  • Ecdyonurus peterseni Lestage, 1930 (syn.)
  • Ecdyonurus hyalinus Esben-Petersen, 1916 (hom.: E. hyalinus Ulmer, 1912)
  • Heptagenia abnorme Tshernova, 1949 (syn.)
  • Heptagenia abnormis Tshernova, 1949 (syn.)

• Cinygmula gartrelli McDunnough, 1934 [CAN:NW;USA:NW]
  • Rhithrogena gartrelli (McDunnough), 1934 (comb.)
• Cinygmula kootenai McDunnough, 1943 [CAN:NW;USA:NW]
  • Rhithrogena kootenai (McDunnough), 1943 (comb.)
• Cinygmula mimus (Eaton), 1885 [CAN:FN,NW;USA:FN,NW,SW]
  • Cinygma mimus Eaton, 1885 (orig.)
  • Rhithrogena mimus (Eaton), 1885 (comb.)
• Cinygmula par (Eaton), 1885 [CAN:FN,NW;USA:FN,NW,SW]
  • Cinygma confusa McDunnough, 1924 (syn.)
  • Cinygma par Eaton, 1885 (orig.)
  • Cinygma hyalina McDunnough, 1924 (syn.)
  • Cinygmula confusa (McDunnough), 1924 (syn.)
  • Cinygmula hyalina (McDunnough), 1924 (syn.)
  • Rhithrogena confusa (McDunnough), 1924 (syn.)
  • Rhithrogena par (Eaton), 1885 (comb.)
• Cinygmula ramaleyi (Dodds), 1923 [CAN:FN,NW;USA:NW,SW]
  • Cinygma ramaleyi (Dodds), 1923 (comb.)
  • Ecdyonurus ramaleyi Dodds, 1923 (orig.)
  • Iron tollandi Dodds, 1923 (syn.)
  • Rhithrogena ramaleyi (Dodds), 1923 (comb.)
• Cinygmula reticulata McDunnough, 1934 [CAN:NW;USA:NW,SW]
  • Rhithrogena reticulata (McDunnough), 1934 (comb.)
• Cinygmula subaequalis (Banks), 1914 [CAN:NE;USA:FN,NE,SE]
  • Cinygma atlantica McDunnough, 1924 (syn.)
  • Cinygmula atlantica (McDunnough), 1924 (syn.)
  • Heptagenia subaequalis Banks, 1914 (orig.)
  • Rhithrogena subaequalis (Banks), 1914 (comb.)
  • Stenonema subaequalis (Banks), 1914 (comb.)
• Cinygmula tarda (McDunnough), 1929 [CAN:FN,NW;USA:FN,NW]
  • Cinygma tarda McDunnough, 1929 (orig.)
  • Rhithrogena tarda (McDunnough), 1929 (comb.)
• Cinygmula tioga Mayo, 1952 [USA:NW]
  • Rhithrogena tioga (Mayo), 1952 (comb.)
• Cinygmula uniformis McDunnough, 1934 [CAN:FN,NW;USA:NW,SW]
  • Rhithrogena uniformis (McDunnough), 1934 (comb.)

• Ecdyonurus bellus (Allen & Cohen), 1977 [MEX:FS]
  • Nixe bella (Allen & Cohen), 1977 (comb.)
  • Heptagenia bella Allen & Cohen, 1977 (orig.)
• Ecdyonurus criddlei (McDunnough), 1927 [CAN:NW;MEX:SW;USA:NW,SW]
  • Ecdyonurus otiosus (McDunnough), 1935 (syn.)
  • Ecdyonurus rosea (Traver), 1935 (syn.)
  • Ecdyonurus salvini (Kimmins), 1934 (syn.)
  • Heptagenia criddlei McDunnough, 1927 (orig.)
  • Heptagenia otiosa McDunnough, 1935 (syn.)
  • Heptagenia rosea Traver, 1935 (syn.)
  • Heptagenia rubroventris Traver, 1935 (syn.)
  • Heptagenia salvini Kimmins, 1934 (syn.)
  • Nixe criddlei (McDunnough), 1927 (comb.)
  • Nixe otiosa (McDunnough), 1935 (syn.)
  • Nixe rosea (Traver), 1935 (syn.)
  • Nixe salvini (Kimmins), 1934 (syn.)
• Ecdyonurus simplicioides (McDunnough), 1924 [CAN:NE,NW;USA:FN,NW,SW]
  • Ecdyonurus rodocki (Traver), 1935 (syn.)
  • Ecdyonurus werestschagini (Tshernova), 1952 (syn.)
  • Heptagenia rodocki Traver, 1935 (syn.)
  • Heptagenia simpliciodes McDunnough, 1924 (spell.)
  • Heptagenia simplicioides McDunnough, 1924 (orig.)
  • Heptagenia werestschagini Tshernova, 1952 (syn.)
  • Nixe rodocki (Traver), 1935 (syn.)
  • Nixe simpliciodes (McDunnough), 1935 (syn.)
  • Rhithrogena imanica Bajkova, 1972 (syn.)

• Epeorus albertae (McDunnough), 1924 [CAN:NE,NW;USA:FN,NW,SW]
  • Iron albertae McDunnough, 1924 (orig.)
  • Iron youngi Traver, 1935 (syn.)
• Epeorus deceptivus (McDunnough), 1924 [CAN:FN,NW;USA:FN,NW,SW]
  • Cinygma deceptiva McDunnough, 1924 (orig.)
  • Iron deceptivus (McDunnough), 1924 (comb.)
• Epeorus dispar (Traver), 1933 [USA:SE]
  • Iron dispar Traver, 1933 (orig.)
• Epeorus dulciana (McDunnough), 1935 [CAN:NW;USA:NW,SW]
  • Iron dulciana McDunnough, 1935 (orig.)
• Epeorus fragilis (Morgan), 1911 [CAN:NE;USA:NE,SE]
  • Iron fragilis Morgan, 1911 (orig.)
  • Iron tenuis Traver, 1935 (syn.)
• Epeorus frisoni (Burks), 1946 [USA:NE]
  • Iron frisoni Burks, 1946 (orig.)
• Epeorus grandis (McDunnough), 1924 [CAN:FN,NW;USA:FN,NW,SW]
  • Ironopsis grandis (McDunnough), 1924 (comb.)
  • Iron grandis McDunnough, 1924 (orig.)
• Epeorus hesperus (Banks), 1924 [USA:NW,SW]
  • Iron hesperus (Banks), 1924 (comb.)
  • Iron sancta-gabriel Traver, 1935 (syn.)
  • Rhithrogena hespera Banks, 1924 (orig.)
• Epeorus lagunitas (Traver), 1935 [USA:NW]
  • Iron lagunitas Traver, 1935 (orig.)
• Epeorus longimanus (Eaton), 1885 [CAN:FN,NW;USA:FN,NW,SW]
  • Iron longimanus Eaton, 1885 (orig.)
  • Iron proprius Traver, 1935 (syn.)
• Epeorus margarita Edmunds & Allen, 1964 [MEX:SW;USA:NW,SW]
  • Iron margarita (Edmunds & Allen), 1964 (comb.)
• Epeorus metlacensis Traver, 1964 [MEX:FS,SW]
  • Iron metlacensis (Traver), 1964 (comb.)
• Epeorus namatus (Burks), 1946 [USA:NE,SE]
  • Iron namatus Burks, 1946 (orig.)
• Epeorus permagnus (Traver), 1935 [CAN:NW;USA:NW]
  • Ironopsis permagnus Traver, 1935 (orig.)
• Epeorus pleuralis (Banks), 1910 [CAN:NE;USA:NE,SE]
  • Heptagenia pleuralis Banks, 1910 (orig.)
  • Iron confusus Traver, 1935 (syn.)
  • Iron fraudator Traver, 1935 (syn.)
  • Iron pleuralis (Banks), 1910 (comb.)
• Epeorus punctatus (McDunnough), 1925 [CAN:NE;USA:NE,SE]
  • Iron punctatus McDunnough, 1925 (orig.)
• Epeorus subpallidus (Traver), 1937 [USA:SE]
  • Iron subpallidus Traver, 1937 (orig.)
• Epeorus suffusus (McDunnough), 1925 [CAN:NE;USA:NE]
  • Iron suffusus McDunnough, 1925 (orig.)
• Epeorus vitreus (Walker), 1853 [CAN:NE;USA:NE,SE]
  • Epeorus humeralis Morgan, 1911 (syn.)
  • Epeorus rubidus (Traver), 1933 (syn.)
  • Heptagenia vitrea (Walker), 1853 (comb.)
  • Iron humeralis (Morgan), 1911 (syn.)
  • Iron vitreus (Walker), 1853 (comb.)
  • Iron rubidus Traver, 1933 (syn.)
  • Palingenia vitrea Walker, 1853 (orig.)
  • Rhithrogena vitrea (Walker), 1853 (comb.)

• Heptagenia adaequata McDunnough, 1924 [CAN:NW;USA:NW,SW]
  • Heptagenia adequata McDunnough, 1924 (spell.)
• Heptagenia culacantha Evans, Botts & Flowers, 1985 [USA:NE]
• Heptagenia dolosa Traver, 1935 [USA:SE]
• Heptagenia elegantula (Eaton), 1885 [CAN:NE,NW;MEX:SW;USA:NE,NW,SE,SW]
  • Heptagenia coxalis Banks, 1914 (syn.)
  • Heptagenia diabasia Burks, 1946 (syn.)
  • Heptagenia querula McDunnough, 1924 (syn.)
  • Rhithrogena elegantula Eaton, 1885 (orig.)
• Heptagenia flavescens (Walsh), 1862 [CAN:FN,NE,NW;MEX:SW;USA:NE,NW,SE,SW]
  • Palingenia flavescens Walsh, 1862 (orig.)
• Heptagenia julia Traver, 1933 [USA:NE,SE]
• Heptagenia marginalis Banks, 1910 [CAN:NE;USA:NE,SE]
• Heptagenia patoka Burks, 1946 [USA:NE]
• Heptagenia pulla (Clemens), 1913 [CAN:FN,NE,NW;USA:FN,NE,SE]
  • Ecdyonurus pullus (Clemens), 1913 (comb.)
  • Ecdyurus grandis Clemens, 1913 (nomen. nud.)
  • Ecdyurus pullus Clemens, 1913 (orig.)
  • Heptagenia pullus Clemens, 1913 (spell.)
• Heptagenia solitaria McDunnough, 1924 [CAN:FN,NW;USA:NW,SW]
• Heptagenia townesi Traver, 1935 [USA:SE]
• Heptagenia whitingi Webb & McCafferty, 2007 [CAN:NW;USA:NE,NW]

• Ironodes arctus Traver, 1935 [CAN:NW;USA:NW]
  • Epeorus arctus (Traver), 1935 (comb.)
• Ironodes californicus (Banks), 1910 [USA:NW,SW]
  • Epeorus californicus (Banks), 1910 (comb.)
  • Iron californicus Banks, 1910 (orig.)
• Ironodes flavipennis Traver, 1935 [CAN:NW]
  • Epeorus flavipennis (Traver), 1935 (comb.)
• Ironodes geminatus (Eaton), 1885 (dub.) [USA:NW]
  • Cinygma geminatum Eaton, 1885 (orig.)
  • Epeorus geminatus (Eaton), 1885 (comb.)
• Ironodes lepidus Traver, 1935 [USA:NW,SW]
  • Epeorus lepidus (Traver), 1935 (comb.)
• Ironodes nitidus (Eaton), 1885 [CAN:NW;MEX:SW;USA:FN,NW,SW]
  • Epeorus nitidus (Eaton), 1885 (comb.)
  • Iron nitidus Eaton, 1885 (orig.)

• Leucrocuta aphrodite (McDunnough), 1926 [CAN:NE;USA:NE,SE,SW]
  • Ecdyonurus aphrodite (McDunnough), 1926 (comb.)
  • Heptagenia aphrodite McDunnough, 1926 (orig.)
• Leucrocuta hebe (McDunnough), 1924 [CAN:FN,NE;USA:NE,NW,SE]
  • Ecdyonurus hebe (McDunnough), 1924 (comb.)
  • Heptagenia hebe McDunnough, 1924 (orig.)
• Leucrocuta jewetti (Allen), 1966 [CAN:NE;USA:NW]
  • Ecdyonurus jewetti (Allen), 1966 (comb.)
  • Heptagenia jewetti Allen, 1966 (orig.)
• Leucrocuta juno (McDunnough), 1924 [CAN:NE;USA:NE,SE]
  • Ecdyonurus juno (McDunnough), 1924 (comb.)
  • Heptagenia juno McDunnough, 1924 (orig.)
• Leucrocuta maculipennis (Walsh), 1863 [CAN:FN,NE,NW;USA:NE,NW,SE,SW]
  • Ecdyonurus maculipennis (Walsh), 1863 (comb.)
  • Ecdyurus maculipennis (Walsh), 1863 (comb.)
  • Heptagenia maculipennis Walsh, 1863 (orig.)
• Leucrocuta minerva (McDunnough), 1924 [CAN:NE;USA:NE,SE]
  • Ecdyonurus minerva (McDunnough), 1924 (comb.)
  • Heptagenia minerva McDunnough, 1924 (orig.)
• Leucrocuta petersi (Allen), 1966 [USA:NW,SW]
  • Ecdyonurus petersi (Allen), 1966 (comb.)
  • Heptagenia petersi Allen, 1966 (orig.)
• Leucrocuta thetis (Traver), 1935 [USA:NE,SE]
  • Ecdyonurus thetis (Traver), 1935 (comb.)
  • Heptagenia thetis Traver, 1935 (orig.)
• Leucrocuta umbratica (McDunnough), 1931 [CAN:NE;USA:NE,SE]
  • Ecdyonurus umbraticus (McDunnough), 1931 (comb.)
  • Heptagenia umbratica McDunnough, 1931 (orig.)
  • Heptagenia umbricata McDunnough, 1931 (spell.)
• Leucrocuta walshi (McDunnough), 1926 [CAN:NE;USA:NE]
  • Ecdyonurus walshi (McDunnough), 1926 (comb.)
  • Heptagenia walshi McDunnough, 1926 (orig.)

• Maccaffertium appaloosa McCafferty, 2011 [USA:SE]
• Maccaffertium bednariki (McCafferty), 1981 [USA:SE]
  • Heptagenia bednariki (McCafferty), 1981 (comb.)
  • Stenonema bednariki McCafferty, 1981 (orig.)
• Maccaffertium carlsoni (Lewis), 1974 [USA:SE]
  • Heptagenia carlsoni (Lewis), 1974 (comb.)
  • Stenonema carlsoni Lewis, 1974 (orig.)
• Maccaffertium exiguum (Traver), 1933 [CAN:NE;USA:NE,SE]
  • Heptagenia exigua (Traver), 1933 (comb.)
  • Stenonema alabamae Traver, 1937 (syn.)
  • Stenonema exiguum Traver, 1933 (orig.)
  • Stenonema quinquespinum Lewis, 1974 (syn.)
• Maccaffertium flaveolum (Pictet), 1843 (dub.) [CAN:NE]
  • Baetis flaveola Pictet, 1843 (orig.)
  • Heptagenia flaveola (Pictet), 1843 (comb.)
  • Stenonema flaveolum (Pictet), 1843 (comb.)
• Maccaffertium ithaca (Clemens & Leonard), 1924 [CAN:NE;USA:NE,SE]
  • Ecdyonurus ithaca (Clemens & Leonard), 1924 (comb.)
  • Heptagenia ithaca Clemens & Leonard, 1924 (orig.)
  • Stenonema allegheniense Carle, 1977 (syn.)
  • Stenonema ithaca (Clemens & Leonard), 1924 (comb.)
• Maccaffertium lenati (McCafferty), 1990 [USA:SE]
  • Stenonema lenati McCafferty, 1990 (orig.)
• Maccaffertium luteum (Clemens), 1913 [CAN:NE;USA:NE,SE]
  • Ecdyonurus luteus (Clemens), 1913 (comb.)
  • Heptagenia lutea Clemens, 1913 (orig.)
  • Stenonema luteum (Clemens), 1913 (comb.)
• Maccaffertium mediopunctatum arwini (Bednarik & McCafferty), 1979 [CAN:NE;USA:NE,SE,SW]
  • Heptagenia mediopunctata arwini (Bednarik & McCafferty), 1979 (comb.)
  • Stenonema mediopunctata arwini Bednarik & McCafferty, 1979 (orig.)
• Maccaffertium mediopunctatum mediopunctatum (McDunnough), 1926 [CAN:NE;USA:NE,SE]
  • Ecdyonurus mediopunctatus McDunnough, 1926 (orig.)
  • Ecdyonurus nepotellus McDunnough, 1933 (syn.)
  • Heptagenia mediopunctata (McDunnough), 1926 (comb.)
  • Heptagenia mediopunctata mediopunctata (McDunnough), 1926 (comb.)
  • Stenonema mediopunctatum (McDunnough), 1926 (comb.)
  • Stenonema mediopunctatum mediopunctatum (McDunnough), 1926 (comb.)
  • Stenonema nepotellum (McDunnough), 1933 (syn.)
• Maccaffertium meririvulanum (Carle & Lewis), 1978 [CAN:NE;USA:NE,SE]
  • Heptagenia meririvulana (Carle & Lewis), 1978 (comb.)
  • Stenonema meririvulanum Carle & Lewis, 1978 (orig.)
  • Stenonema sp. No. 3 Traver, 1933 (syn.)
• Maccaffertium mexicanum integrum (McDunnough), 1924 [CAN:NE;MEX:SW;USA:NE,SE,SW]
  • Heptagenia integer McDunnough, 1924 (orig.)
  • Heptagenia mexicana integer McDunnough, 1924 (comb.)
  • Stenonema bellum Traver, 1933 (syn.)
  • Stenonema integrum (McDunnough), 1924 (comb.)
  • Stenonema metriotes Burks, 1953 (syn.)
  • Stenonema mexicanum integrum (McDunnough), 1924 (comb.)
  • Stenonema wabasha Daggy, 1945 (syn.)
• Maccaffertium mexicanum mexicanum (Ulmer), 1920 [MEX:FS]
  • Heptagenia mexicana Ulmer, 1920 (orig.)
  • Heptagenia mexicana mexicana Ulmer, 1920 (stat.)
  • Stenonema mexicana (Ulmer), 1920 (comb.spell.)
  • Stenonema mexicanum mexicanum (Ulmer), 1920 (comb.)
• Maccaffertium modestum (Banks), 1910 [CAN:NE;USA:NE,SE]
  • Ecdyonurus ruber McDunnough, 1926 (syn.)
  • Ecdyonurus rubromaculatus (Clemens), 1913 (syn.)
  • Epeorus modestus Banks, 1910 (orig.)
  • Heptagenia modesta (Banks), 1910 (comb.)
  • Heptagenia rubromaculata Clemens, 1913 (syn.)
  • Iron modestus (Banks), 1910 (comb.)
  • Stenonema annexum Traver, 1933 (syn.)
  • Stenonema modestum (Banks), 1910 (comb.)
  • Stenonema ruber (McDunnough), 1926 (syn.)
  • Stenonema rubromaculatum (Clemens), 1913 (syn.)
  • Stenonema rubrum (McDunnough), 1926 (syn.)
  • Stenonema varium Traver, 1933 (syn.)
• Maccaffertium pudicum (Hagen), 1861 [USA:NE,SE]
  • Ecdyonurus pudicus (Hagen), 1861 (comb.)
  • Ephemera pudica Hagen, 1861 (orig.)
  • Heptagenia pudica (Hagen), 1861 (comb.)
  • Stenonema pudicum (Hagen), 1861 (comb.)
• Maccaffertium pulchellum (Walsh), 1862 [CAN:NE;USA:NE,SE]
  • Ecdyonurus pulchellus (Walsh), 1862 (comb.)
  • Heptagenia luridipennnis (Burmeister), 1839 (id.)
  • Heptagenia pulchella (Walsh), 1862 (comb.)
  • Palingenia pulchella Walsh, 1862 (orig.)
  • Stenonema pulchellum (Walsh), 1862 (comb.)
• Maccaffertium sinclairi (Lewis), 1979 [USA:SE]
  • Heptagenia sinclairi (Lewis), 1979 (comb.)
  • Stenonema sinclairi Lewis, 1979 (orig.)
• Maccaffertium smithae (Traver), 1937 [USA:SE]
  • Heptagenia smithae (Traver), 1937 (comb.)
  • Stenonema smithae Traver, 1937 (orig.)
• Maccaffertium terminatum placitum (Banks), 1910 [CAN:NE;USA:NE]
  • Ecdyonurus placita (Banks), 1910 (comb.)
  • Heptagenia placita Banks, 1910 (orig.)
  • Heptagenia terminata placita Banks, 1910 (comb.)
  • Stenonema placitum (Banks), 1910 (comb.)
  • Stenonema terminatum placitum (Banks), 1910 (comb.)
• Maccaffertium terminatum terminatum (Walsh), 1862 [CAN:NE,NW:USA:NE,NW,SE,SW]
  • Ecdyonurus bipunctatus McDunnough, 1926 (syn.)
  • Ecdyonurus terminatus (Walsh), 1862 (comb.)
  • Heptagenia terminata (Walsh), 1862 (comb.)
  • Heptagenia terminata terminata (Walsh), 1862 (comb.)
  • Palingenia terminata Walsh, 1862 (orig.)
  • Stenonema ares Burks, 1953 (syn.)
  • Stenonema bipunctatum (McDunnough), 1926 (syn.)
  • Stenonema lepton Burks, 1946 (syn.)
  • Stenonema terminatum (Walsh), 1862 (comb.)
  • Stenonema terminatum terminatum (Walsh), 1862 (comb.)
• Maccaffertium vicarium (Walker), 1853 [CAN:FN,NE,NW;USA:NE,SE]
  • Baetis tessellata Walker, 1853 (syn.)
  • Baetis vicaria Walker, 1853 (orig.)
  • Ecdyonurus fusca (Clemens), 1913 (syn.spell)
  • Ecdyonurus fuscum (Clemens), 1913 (syn.)
  • Ecdyonurus fuscus (Clemens), 1913 (syn.spell)
  • Ecdyonurus rivulicolus McDunnough, 1933 (syn.)
  • Ecdyonurus vicarius (Walker), 1853 (comb.)
  • Ecdyurus vicarius (Walker), 1853 (comb.)
  • Heptagenia fusca Clemens, 1913 (syn.)
  • Heptagenia vicaria (Walker), 1853 (comb.)
  • Stenonema fuscum (Clemens), 1913 (syn.)
  • Stenonema rivulicolum (McDunnough), 1933 (syn.)
  • Stenonema tessellata (Walker), 1853 (syn.)
  • Stenonema vicarium (Walker), 1853 (comb.)
• Maccaffertium wudigeum McCafferty & Lenat, 2010 [USA:SE]

• Macdunnoa brunnea Flowers, 1982 [USA:NE,SE]
  • Heptagenia brunnea (Flowers), 1982 (comb.)
• Macdunnoa nipawinia Lehmkuhl, 1979 [CAN:NW]
  • Heptagenia nipawinia (Lehmkuhl), 1979 (comb.)
• Macdunnoa persimplex (McDunnough), 1929 [CAN:NE;USA:NE,NW,SE]
  • Heptagenia persimplex McDunnough, 1929 (orig.)

• Nixe dorothae Webb & McCafferty, 2011 [USA:NE]
• Nixe flowersi McCafferty, 1982 [USA:NE,SE]
  • Ecdyonurus flowersi (McCafferty), 1982 (comb.)
• Nixe horrida (McDunnough), 1926 [CAN:NE;USA:NE]
  • Ecdyonurus horridus (McDunnough), 1926 (comb.)
  • Heptagenia horrida McDunnough, 1926 (orig.)
• Nixe inconspicua (McDunnough), 1924 [CAN:NE,NW;USA:NE,SE]
  • Ecdyonurus inconspicuus (McDunnough), 1924 (comb.)
  • Heptagenia inconspicua McDunnough, 1924 (orig.)
• Nixe kennedyi (McDunnough), 1924 [USA:NW]
  • Ecdyonurus kennedyi (McDunnough), 1924 (comb.)
  • Heptagenia kennedyi McDunnough, 1924 (orig.)
• Nixe lucidipennis (Clemens), 1913 [CAN:NE,NW:USA:NE,SE]
  • Ecdyonurus lucidipennis (Clemens), 1913 (comb.)
  • Ecdyurus lucidipennis Clemens, 1913 (orig.)
  • Heptagenia lucidipennis (Clemens), 1913 (comb.)
• Nixe perfida (McDunnough), 1926 [CAN:NE;USA:NE,SE]
  • Ecdyonurus perfidus (McDunnough), 1926 (comb.)
  • Heptagenia perfida McDunnough, 1926 (orig.)
• Nixe rusticalis (McDunnough), 1931 [CAN:NE,NW;USA:NE,SE]
  • Ecdyonurus rusticalis (McDunnough), 1931 (comb.)
  • Heptagenia rusticalis McDunnough, 1931 (orig.)
• Nixe spinosa (Traver), 1933 [USA:SE]
  • Heptagenia spinosa Traver, 1933 (orig.)

• Raptoheptagenia cruentata (Walsh), 1863 [CAN:NE,NW;USA:NE,NW,SE]
  • Heptagenia cruentata Walsh, 1863 (orig.)
  • Heptagenia reversalis McDunnough, 1924 (syn.)

• Rhithrogena amica Traver, 1935 [CAN:NE;USA:NE,SE]
• Rhithrogena anomala McDunnough, 1928 [CAN:NE;USA:NE,SE]
• Rhithrogena brunneotincta McDunnough, 1933 [CAN:NE;USA:NE]
• Rhithrogena decora Day, 1954 [USA:NW,SW]
• Rhithrogena exilis Traver, 1933 [USA:SE]
• Rhithrogena fasciata Traver, 1933 [USA:SE]
• Rhithrogena flavianula (McDunnough), 1924 [USA:NW,SW]
  • Heptagenia flavianula McDunnough, 1924 (orig.)
• Rhithrogena fuscifrons Traver, 1933 [USA:SE]
• Rhithrogena futilis McDunnough, 1934 [CAN:FN,NW;USA:FN,NW,SW]
• Rhithrogena gaspeensis McDunnough, 1933 [CAN:NE]
• Rhithrogena hageni Eaton, 1885 [CAN:NW;USA:NW,SW]
  • Heptagenia brunnea Hagen, 1875 (hom.: H. brunnea (Rambur), 1842)
  • Rhithrogena brunnea (Hagen), 1875 (hom.comb.)
  • Rhithrogena doddsi McDunnough, 1926 (syn.)
• Rhithrogena impersonata (McDunnough), 1925 [CAN:NE;USA:NE,SE]
  • Heptagenia impersonata McDunnough, 1925 (orig.)
  • Rhithrogena sanguinea Ide, 1954 (syn.)
• Rhithrogena ingalik Randolph & McCafferty, 2005 [USA:FN]
• Rhithrogena jejuna Eaton, 1885 [CAN:FN,NE,NW;USA:NE]
  • Baetis fusca Walker, 1853 (hom.: B. fusca Burmeister, 1839)
  • Heptagenia fusca (Walker), 1853 (hom.comb.)
  • Rhithrogena fusca (Walker), 1853 (hom.comb.)
• Rhithrogena manifesta Eaton, 1885 [CAN:NE;USA:NE,NW,SE]
  • Heptagenia manifesta (Eaton), 1885 (comb.)
  • Rhithrogena pellucida Daggy, 1945 (syn.)
• Rhithrogena morrisoni (Banks), 1924 [CAN:NW;MEX:SW;USA:NW,SW]
  • Epeorus morrisoni Banks, 1924 (orig.)
  • Iron petulans Seemann, 1927 (syn.)
  • Rhithrogena petulans (Seemann), 1927 (syn.)
• Rhithrogena notialis Allen & Cohen, 1977 [MEX:FS]
• Rhithrogena plana Allen & Chao, 1978 [MEX:SW;USA:NW,SW]
  • Rhithrogena vitta Allen & Chao, 1978 (syn.)
• Rhithrogena robusta Dodds, 1923 [CAN:NW;USA:FN,NW,SW]
• Rhithrogena rubicunda Traver, 1937 [USA:SE]
• Rhithrogena uhari Traver, 1933 [USA:NE,SE]
• Rhithrogena undulata (Banks), 1924 [CAN:FN,NE,NW;USA:NE,NW,SW]
  • Epeorus undulata Banks, 1924 (spell.)
  • Epeorus undulatus Banks, 1924 (orig.)
• Rhithrogena virilis McDunnough, 1934 [CAN:NW;USA:NW]

• Spinadis simplex (Walsh), 1863 [CAN:NE;USA:NE,SE]
  • Anepeorus simplex (Walsh), 1863 (comb.)
  • Heptagenia simplex Walsh, 1863 (orig.)
  • Spinadis wallacei Edmunds & Jensen, 1974 (syn.)

• Stenacron candidum (Traver), 1935 [CAN:NE;USA:NE,SE]
  • Heptagenia candida (Traver), 1935 (comb.)
  • Stenonema candidum Traver, 1935 (orig.)
• Stenacron carolina (Banks), 1914 [CAN:NE;USA:NE,SE]
  • Ecdyonurus carolina (Banks), 1914 (comb.)
  • Heptagenia carolina Banks, 1914 (orig.)
  • Stenonema carolina (Banks), 1914 (comb.)
• Stenacron floridense (Lewis), 1974 [USA:SE]
  • Heptagenia floridensis (Lewis), 1974 (comb.)
  • Stenonema floridense Lewis, 1974 (orig.)
• Stenacron gildersleevei (Traver), 1935 [CAN:NE;USA:NE,SE]
  • Heptagenia gildersleevei (Traver), 1935 (comb.)
  • Stenonema gildersleevei Traver, 1935 (orig.)
• Stenacron interpunctatum (Say), 1839 [CAN:NE,NW;USA:NE,NW,SE]
  • Baetis canadensis Walker, 1853 (syn.)
  • Baetis interpunctata Say, 1839 (orig.)
  • Ecdyonurus canadensis (Walker), 1853 (syn.)
  • Ecdyonurus frontalis (Banks), 1910 (syn.)
  • Ecdyonurus heterotarsalis McDunnough, 1933 (syn.)
  • Ecdyurus canadensis (Walker), 1853 (syn.)
  • Heptagenia canadensis (Walker), 1853 (syn.)
  • Heptagenia frontalis Banks, 1910 (syn.)
  • Heptagenia interpunctata (Say), 1839 (comb.)
  • Palingenia interpunctata (Say), 1839 (comb.)
  • Stenacron areion (Burks), 1953 (syn.)
  • Stenacron canadense (Walker), 1853 (syn.)
  • Stenacron frontale (Banks), 1910 (syn.)
  • Stenacron heterotarsale (McDunnough), 1933 (syn.)
  • Stenonema areion Burks, 1953 (syn.)
  • Stenonema affine Traver, 1933 (syn.)
  • Stenonema canadense (Walker), 1853 (syn.)
  • Stenonema conjunctum Traver, 1935 (syn.)
  • Stenonema frontale (Banks), 1910 (syn.)
  • Stenonema heterotarsale (McDunnough), 1933 (syn.)
  • Stenonema interpunctatum (Say), 1839 (comb.)
  • Stenonema majus Traver, 1935 (syn.)
  • Stenonema ohioense Traver, 1935 (syn.)
  • Stenonema proximum Traver, 1935 (syn.)
• Stenacron minnetonka (Daggy), 1945 [USA:NE,SE]
  • Heptagenia minnetonka (Daggy), 1945 (comb.)
  • Stenonema minnetonka Daggy, 1945 (orig.)
• Stenacron pallidum (Traver), 1933 [USA:NE,SE]
  • Heptagenia pallida (Traver), 1933 (comb.)
  • Stenonema pallidum Traver, 1933 (orig.)

• Stenonema femoratum (Say), 1823 [CAN:FN,NE,NW;USA:NE,SE,SW]
  • Baetis femorata Say, 1823 (orig.)
  • Ecdyonurus femoratus (Say), 1823 (comb.)
  • Ecdyonurus tripunctatus (Banks), 1910 (syn)
  • Heptagenia femorata (Say), 1823 (comb.)
  • Heptagenia tripunctata Banks, 1910 (syn.)
  • Siphlurus femoratus (Say), 1823 (comb.)
  • Stenonema birdi Traver, 1935 (syn.)
  • Stenonema scitulum Traver, 1935 (syn.)
  • Stenonema tripunctatum (Banks), 1910 (syn.)

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ISONYCHIIDAE

• Isonychia arida (Say), 1839 [USA:NE,SE]
  • Baetis arida Say, 1839 (orig.)
  • Isonychia pictipes Traver, 1934 (syn.)
• Isonychia berneri Kondratieff & Voshell, 1984 [USA:SE]
• Isonychia bicolor (Walker), 1853 [CAN:NE;USA:NE,SE]
  • Chirotonetes albomanicatus Needham, 1905 (syn.)
  • Isonychia albomanicata (Needham), 1905 (syn.)
  • Isonychia christina Traver, 1934 (syn.)
  • Isonychia circe Traver, 1934 (syn.)
  • Isonychia fattigi Traver, 1934 (syn.)
  • Isonychia harperi Traver, 1934 (syn.)
  • Isonychia matilda Traver, 1934 (syn.)
  • Isonychia pacoleta Traver, 1932 (syn.)
  • Isonychia sadleri Traver, 1934 (syn.)
  • Palingenia bicolor Walker, 1853 (orig.)
  • Siphlurus bicolor (Walker), 1853 (comb.)
• Isonychia campestris McDunnough, 1931 [CAN:NE,NW;USA:NW]
  • Isonychia sicca campestris McDunnough, 1931 (orig.)
• Isonychia diversa Traver, 1934 [USA:SE] (recently extinct)
• Isonychia georgiae McDunnough, 1931 [USA:SE]
  • Isonychia annulata Traver, 1932 (syn.)
  • Isonychia notata Traver, 1932 (syn.)
  • Isonychia thalia Traver, 1934 (syn.)
• Isonychia hoffmani Kondratieff & Voshell, 1984 [USA:SE]
• Isonychia intermedia (Eaton), 1885 [MEX:SW;USA:SW]
  • Chirotonetes intermedius Eaton, 1885 (orig.)
• Isonychia obscura Traver, 1932 [CAN:NE;USA:NE,SE]
• Isonychia rufa McDunnough, 1931 [CAN:NE;USA:NE,NW,SE]
• Isonychia sayi Burks, 1953 [CAN:NE;USA:NE,SE]
• Isonychia serrata Traver, 1932 [USA:SE]
• Isonychia sicca (Walsh), 1862 [CAN:NE;MEX:FS,SW:USA:NE,NW,SE,SW]
  • Baetis sicca Walsh, 1862 (orig.)
  • Chirotonetes mancus (Eaton), 1871 (syn.)
  • Chirotonetes siccus (Walsh), 1862 (comb.)
  • Isonychia edmundsi Kondratieff & Voshell, 1984 (syn.)
  • Isonychia manca Eaton, 1871 (syn.)
  • Isonychia sicca manca Eaton, 1871 (syn.)
  • Isonychia sicca sicca (Walsh), 1862 (stat.)
  • Siphlurus siccus (Walsh), 1862 (comb.)
• Isonychia similis Traver, 1932 [USA:SE]
  • Isonychia aurea Traver, 1932 (syn.)
• Isonychia tusculanensis Berner, 1948 [USA:SE]
• Isonychia velma Needham, 1932 [USA:NW]

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LEPTOHYPHIDAE

• Ableptemetes dicinctus (Allen & Brusca), 1973 [MEX:FS]
  • Leptohyphes dicinctus Allen & Brusca, 1973 (orig.)
  • Tricorythopsis dicinctus (Allen & Brusca), 1973 (comb.)

• Allenhyphes vescus (Allen), 1978 [MEX:FS,SW;USA:SW]
  • Allenhyphes michaeli (Allen), 1978 (syn.)
  • Leptohyphes michaeli Allen, 1978 (syn.)
  • Leptohyphes vescus Allen, 1978 (orig.)

• Asioplax dolani (Allen), 1967 [USA:SE]
  • Leptohyphes dolani Allen, 1967 (orig.)
• Asioplax edmundsi (Allen), 1967 [CAN:NW;USA:NW,SW]
  • Asioplax corpulenta (Kilgore & Allen), 1973 (syn.)
  • Tricorythodes corpulentus Kilgore & Allen, 1973 (syn.)
  • Tricorythodes edmundsi Allen, 1967 (orig.)
• Asioplax numinuh Wiersema, McCafferty & Baumgardner, 2001 [MEX:FS,SW;USA:SW]
• Asioplax texana (Traver), 1935 [MEX:SW;USA:SE,SW]
  • Tricorythodes texanus Traver, 1935 (orig.)

• Homoleptohyphes dimorphus (Allen), 1967 [MEX:SW;USA:NW,SW]
  • Tricorythodes dimorphus Allen, 1967 (orig.)
• Homoleptohyphes mirus (Allen), 1967 [MEX:SW;USA:SW]
  • Leptohyphes baumanni Kilgore & Allen, 1967 (syn.)
  • Leptohyphes mirus Allen, 1967 (orig.)
• Homoleptohyphes quercus (Kilgore & Allen), 1973 [USA:SW]
  • Leptohyphes quercus Kilgore & Allen, 1973 (orig.)

• Leptohyphes alleni Brusca, 1971 [MEX:FS]
• Leptohyphes apache Allen, 1967 [MEX:FS,SW;USA:NW,SW]
  • Leptohyphes hispidus Allen & Brusca, 1973 (syn.)
  • Leptohyphes lumas Allen & Brusca, 1973 (syn.)
  • Leptohyphes spiculatus Allen & Brusca, 1973 (syn.)
  • Leptohyphes succinus Allen, 1978 (syn.)
• Leptohyphes berneri Traver, 1958 [MEX:FS]
• Leptohyphes ferruginus Allen & Brusca, 1973 [MEX:FS;USA:SW]
  • Leptohyphes ferrugineus Allen & Brusca, 1973 (spell.)
  • Leptohyphes piraticus Allen, 1978 (syn.)
• Leptohyphes lestes Allen & Brusca, 1973 [MEX:FS,SW;USA:SW]
• Leptohyphes musseri Allen, 1967 [MEX:FS,SW]
  • Leptohyphes brunneus Allen & Brusca, 1973 (syn.)
• Leptohyphes nigripunctum Traver, 1943 [MEX:FS]
  • Leptohyphes nigripunctatum Traver, 1943 (spell.)
  • Leptohyphes nigripunctus Traver, 1943 (spell.)
• Leptohyphes peterseni Ulmer, 1920 [MEX:FS]
• Leptohyphes pilosus Allen & Brusca, 1973 [MEX:FS]
• Leptohyphes sabinas Traver, 1958 [MEX:FS,SW;USA:SW]
  • Leptohyphes castaneus Allen, 1967 (syn.)
  • Leptohyphes consortis Allen & Brusca, 1973 (syn.)
  • Leptohyphes tarsos Allen & Murvosh, 1987 (syn.)
• Leptohyphes zalope Traver, 1958 [MEX:FS,SW:USA:SW]
  • Leptohyphes vulturnus Allen, 1978 (syn.)
  • Leptohyphes zelus Allen, 1978 (syn.)

• Tricoryhyphes condylus (Allen), 1967 [MEX:SW;USA:NW,SW]
  • Tricorythodes condylus Allen, 1967 (orig.)
• Tricoryhyphes mulaiki (Traver), 1959 [MEX:FS,SW;USA:SW]
  • Tricorythodes mulaiki Traver, 1959 (orig.)

• Tricorythodes albilineatus Berner, 1946 [USA:NE,SE,SW]
• Tricorythodes allectus (Needham), 1905 [CAN:NE;USA:NE,SE]
  • Caenis allecta Needham, 1905 (orig.)
  • Tricorythodes atratus (McDunnough), 1923 (syn.)
  • Tricorythodes peridius Burks, 1953 (syn.)
  • Tricorythus allectus (Needham), 1905 (comb.)
  • Tricorythus atratus McDunnough, 1923 (syn.)
• Tricorythodes cobbi Alba-Tercedor & Flannagan, 1995 [CAN:NE;USA:NE]
• Tricorythodes comus Traver, 1959 [MEX:FS]
• Tricorythodes curvatus Allen, 1977 [USA:SE,SW]
• Tricorythodes explicatus (Eaton), 1892 [MEX:FS,SW;CAN:NE,NW;USA:NE,NW,SW]
  • Tricorythodes fallacina McDunnough, 1939 (syn.)
  • Tricorythodes fallax Traver, 1935 (syn.)
  • Tricorythodes minutus Traver, 1935 (syn.)
  • Tricorythus explicatus Eaton, 1892 (orig.)
• Tricorythodes fictus Traver, 1935 [MEX:SW,FS;USA:NE,NW,SW]
  • Tricorythodes angulatus Traver, 1959 (syn.)
• Tricorythodes mosegus Alba-Tercedor & Flannagan, 1995 [CAN:NE;USA:NE]
  • Tricorythodes mosequs Alba-Tercedor & Flannagan, 1995 (spell.)
• Tricorythodes notatus Allen & Brusca, 1973 [MEX:FS]
• Tricorythodes robacki (Allen), 1967 [USA:NE,SE,SW]
  • Leptohyphes robacki Allen, 1967 (orig.)
• Tricorythodes sordidus Allen, 1967 [MEX:FS,SW]
• Tricorythodes stygiatus McDunnough, 1931 [CAN:NE;USA:NE,SE]
• Tricorythodes ulmeri Allen & Brusca, 1973 [MEX:FS,SW]

• Vacupernius packeri (Allen), 1967 [MEX:FS,SW;USA:SW]
  • Leptohyphes packeri Allen, 1967 (orig.)
  • Leptohyphes paraguttatus Allen, 1978 (syn.)
  • Leptohyphes phalarobranchus Kilgore & Allen, 1973 (syn.)
  • Vacupernius paraguttatus (Allen), 1978 (syn.)

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LEPTOPHLEBIIDAE

• Choroterpes albiannulata McDunnough, 1924 [CAN:NW;USA:NW]
• Choroterpes basalis (Banks), 1900 [CAN:NE;USA:NE,SE]
  • Choroterpes ferruginea Traver, 1934 (syn.)
  • Choroterpes fusca Spieth, 1938 (syn.)
  • Choroterpes hubbelli Berner, 1946 (syn.)
  • Leptophlebia basalis Banks, 1900 (orig.)
• Choroterpes inornata Eaton, 1892 [MEX:FS,SW;USA:NW,SW]
  • Choroterpes oaxacaensis Brusca & Allen, 1973 (syn.)
• Choroterpes terratoma Seemann, 1927 [USA:NW,SW]
• Choroterpes ungulus Lugo-Ortiz & McCafferty, 1996 [MEX:FS]

• Farrodes flavipennis Dominguez, Molineri & Peters, 1996 [MEX:SW]
• Farrodes maya Dominguez, 1999 [MEX:FS]
• Farrodes mexicanus Dominguez, 1999 [MEX:FS;USA:SW]
• Farrodes otiesa Lugo-Ortiz & McCafferty, 1996 [MEX:FS,SW]
• Farrodes reevesi Randolph & McCafferty, 2001 [MEX:FS]
• Farrodes texanus Davis, 1987 [MEX:SW;USA:SW]
• Farrodes tulija Dominguez, Molineri & Peters, 1996 [MEX:FS]

• Habrophlebia vibrans Needham, 1907 [CAN:NE;USA:NE,SE]
  • Habrophlebia jocosa Banks, 1914 (syn.)
  • Habrophlebia pusilla Traver, 1932 (syn.)

• Habrophlebiodes americana (Banks), 1903 [CAN:NE;USA:NE,SE]
  • Choroterpes betteni Needham, 1908 (syn.)
  • Habrophlebia americana Banks, 1903 (orig.)
  • Habrophlebiodes betteni (Needham), 1908 (syn.comb.)
  • Leptophlebia betteni (Needham), 1908 (syn.comb.)
• Habrophlebiodes annulata Traver, 1934 [USA:SE]
• Habrophlebiodes brunneipennis Berner, 1946 [USA:SE]
• Habrophlebiodes celeteria Berner, 1975 [USA:SE]

• Hydrosmilodon primanus (Eaton), 1892 [MEX:FS]
  • Thraulus primanus Eaton, 1892 (orig.)
  • Traverella primanus (Eaton), 1892 (comb.)
  • Traverella primana (Eaton), 1892 (spell.)

• Leptophlebia bradleyi Needham, 1932 [CAN:NE;USA:NE,SE,SW]
  • Paraleptophlebia bradleyi (Needham), 1932 (comb.)
• Leptophlebia cupida (Say), 1823 [CAN:NE,NW;USA:NE,NW,SE]
  • Baetis ignava Hagen, 1861 (syn.)
  • Blasturus austrinus Traver, 1932 (syn.)
  • Blasturus collinus Traver, 1932 (syn.)
  • Blasturus concinnus (Walker), 1853 (syn.)
  • Blasturus cupidus (Say), 1823 (comb.)
  • Blasturus gravastellus Eaton, 1884 (syn.)
  • Cloe quebecensis Provancher, 1876 (syn.)
  • Ephemera cupida Say, 1823 (orig.)
  • Ephemera hebes Walker, 1853 (syn.)
  • Ephemerella quebecensis (Provancher), 1876 (syn.)
  • Heptagenia quebecensis (Provancher), 1876 (syn.)
  • Leptophlebia austrina (Traver), 1932 (syn.)
  • Leptophlebia collina (Traver), 1932 (syn.)
  • Leptophlebia concinna (Walker), 1853 (syn.)
  • Leptophlebia gravastella (Eaton), 1884 (syn.)
  • Leptophlebia hebes (Walker), 1853 (syn.)
  • Leptophlebia ignava (Hagen), 1861 (syn.)
  • Leptophlebia pallipes (Walker), 1853 (syn.)
  • Palingenia concinna Walker, 1853 (syn.)
  • Palingenia pallipes Walker, 1853 (syn.)
  • Potamanthus concinnus (Walker), 1853 (syn.)
  • Potamanthus cupidus (Say), 1823 (comb.)
• Leptophlebia intermedia (Traver), 1932 [USA:NE,SE]
  • Blasturus grandis Traver, 1932 (syn.)
  • Blasturus intermedius Traver, 1932 (orig.)
  • Leptophlebia grandis (Traver), 1932 (syn.)
• Leptophlebia johnsoni McDunnough, 1924 [CAN:NE;USA:NE,SE]
  • Blasturus gracilis Traver, 1932 (syn.)
  • Leptophlebia gracilis (Traver), 1932 (syn.)
• Leptophlebia konza Burian, 2001 [USA:NE]
• Leptophlebia nebulosa (Walker), 1853 [CAN:FN,NE,NW;USA:NE,NW,SE]
  • Blasturus nebulosus (Walker), 1853 (comb.)
  • Palingenia nebulosa Walker, 1853 (orig.)
  • Potamanthus nebulosus (Walker), 1853 (comb.)
  • Potamanthus odonatus Walsh, 1862 (syn.)
• Leptophlebia pacifica (McDunnough), 1933 [USA:NW]
  • Blasturus pacificus McDunnough, 1933 (orig.)
  • Blasturus vibex Traver, 1934 (syn.)
  • Leptophlebia vibex (Traver), 1934 (syn.)

• Neochoroterpes kossi (Allen), 1974 [USA:SW]
  • Choroterpes kossi Allen, 1974 (orig.)
  • Choroterpes sp. 1 Lugo-Ortiz & McCafferty, 1995 (syn.)
• Neochoroterpes nanita (Traver), 1934 [USA:SW]
  • Choroterpes crocatus Allen, 1974 (syn.)
  • Choroterpes manita Traver, 1934 (spell.)
  • Choroterpes nanita Traver, 1934 (orig.)
  • Neochoroterpes crocatus (Allen), 1974 (syn.)
• Neochoroterpes oklahoma (Traver), 1934 [MEX:FS,SW;USA:NE,NW,SW]
  • Choroterpes mexicana Allen, 1974 (syn.)
  • Choroterpes mexicanus Allen, 1974 (spell.)
  • Choroterpes oklahoma Traver, 1934 (orig.)
  • Choroterpes sp. 2 Lugo-Ortiz & McCafferty, 1995 (syn.)
• Neochoroterpes orientalis Henry, 1993 [MEX:FS]

• Paraleptophlebia adoptiva (McDunnough), 1929 [CAN:NE,NW;USA:NE,NW,SE]
  • Leptophlebia adoptiva McDunnough, 1929 (orig.)
• Paraleptophlebia altana Kilgore & Allen, 1973 [USA:NW,SW]
• Paraleptophlebia aquilina Harper & Harper, 1986 [USA:NW]
• Paraleptophlebia assimilis (Banks), 1914 [CAN:NE;USA:NE,SE]
  • Leptophlebia assimilis Banks, 1914 (orig.)
• Paraleptophlebia associata (McDunnough), 1924 [USA:NW,SW]
  • Leptophlebia associata McDunnough, 1924 (orig.)
  • Paraleptophlebia compar Traver, 1934 (syn.)
• Paraleptophlebia bicornuta (McDunnough), 1926 [CAN:NW;USA:NW]
  • Leptophlebia bicornuta McDunnough, 1926 (orig.)
• Paraleptophlebia brunneipennis (McDunnough), 1924 [CAN:NW;USA:NW]
  • Leptophlebia brunneipennis McDunnough, 1924 (orig.)
• Paraleptophlebia cachea Day, 1954 [USA:NW]
• Paraleptophlebia calcarica Rowbotham & Allen, 1988 [USA:NE,SE]
  • Paraleptophlebia calcarita Robotham & Allen, 1988 (spell.)
  • Paraleptophlebia calcarica Robotham & Allen, 1988 (orig.author.spell.)
• Paraleptophlebia californica Traver, 1934 [USA:SW]
• Paraleptophlebia clara (McDunnough), 1933 [USA:NW]
  • Leptophlebia clara McDunnough, 1933 (orig.)
• Paraleptophlebia debilis (Walker), 1853 [CAN:FN,NE,NW;USA:FN,NE,NW,SE,SW]
  • Baetis debilis Walker, 1853 (orig.)
  • Leptophlebia debilis (Walker), 1853 (comb.)
  • Leptophlebia mollis (Hagen), 1861 (id.)
  • Leptophlebia separata Ulmer, 1920 (invalid renam.)
• Paraleptophlebia falcula Traver, 1934 [USA:NW]
• Paraleptophlebia georgiana Traver, 1934 [USA:SE]
• Paraleptophlebia gregalis (Eaton), 1884 [CAN:NW;USA:NW,SW]
  • Leptophlebia gregalis Eaton, 1884 (orig.)
  • Leptophlebia invalida McDunnough, 1926 (syn.)
  • Paraleptophlebia invalida (McDunnough), 1926 (syn.)
• Paraleptophlebia guttata (McDunnough), 1924 [CAN:FN,NE;USA:NE,SE]
  • Leptophlebia guttata McDunnough, 1924 (orig.)
• Paraleptophlebia helena Day, 1952 [USA:NW]
• Paraleptophlebia heteronea (McDunnough), 1924 [CAN:NW;USA:NW,SW]
  • Leptophlebia heteronea McDunnough, 1924 (orig.)
• Paraleptophlebia jeanae Berner, 1955 [USA:NE,SE]
• Paraleptophlebia jenseni McCafferty & Kondratieff, 1999 [USA:NW]
• Paraleptophlebia kirchneri Kondratieff & Durfee, 1994 [USA:SE]
• Paraleptophlebia memorialis (Eaton), 1884 [CAN:NW;MEX:SW;USA:NW,SW]
  • Leptophlebia memorialis Eaton, 1884 (renam.)
  • Leptophlebia pallipes Hagen, 1875 (hom.: L. pallipes (Walker), 1853)
  • Paraleptophlebia pallipes (Hagen), 1875 (hom.comb.)
• Paraleptophlebia moerens (McDunnough), 1924 [CAN:FN,NE,NW;USA:NE,SE]
  • Leptophlebia moerens McDunnough, 1924 (orig.)
• Paraleptophlebia mollis (Eaton), 1871 [CAN:NE;USA:NE,NW,SE]
  • Cloe mollis Hagen, 1861 (nom. nud.)
  • Leptophlebia mollis Eaton, 1871 (orig.)
  • Leptophlebia mollis Hagen, 1861 (nom. nud.)
• Paraleptophlebia ontario (McDunnough), 1926 [CAN:NE;USA:NE,SE]
  • Leptophlebia ontario McDunnough, 1926 (orig.)
• Paraleptophlebia packii (Needham), 1927 [USA:NW]
  • Leptophlebia packii Needham, 1927 (orig.)
  • Paraleptophlebia packi (Needham), 1927 (spell.)
• Paraleptophlebia placeri Mayo, 1939 [USA:NW]
• Paraleptophlebia praepedita (Eaton), 1884 [CAN:NE,NW;USA:NE,SE]
  • Leptophlebia praepedita Eaton, 1884 (orig.)
• Paraleptophlebia quisquilia Day, 1952 [USA:NW]
• Paraleptophlebia rufivenosa (Eaton), 1884 [CAN:NW;USA:NW,SW]
  • Leptophlebia rufivenosa Eaton, 1884 (orig.)
• Paraleptophlebia sculleni Traver, 1934 [USA:NW]
• Paraleptophlebia sticta Burks, 1953 [USA:NE]
• Paraleptophlebia strigula (McDunnough), 1932 [CAN:NE;USA:NE,SE]
  • Leptophlebia strigula McDunnough, 1932 (orig.)
• Paraleptophlebia swannanoa (Traver), 1932 [USA:SE]
  • Leptophlebia swannanoa Traver, 1932 (orig.)
• Paraleptophlebia temporalis (McDunnough), 1926 [CAN:NW;USA:NW,SW]
  • Leptophlebia temporalis McDunnough, 1926 (orig.)
• Paraleptophlebia traverae McCafferty & Kondratieff, 1999 [USA:NW]
• Paraleptophlebia vaciva (Eaton), 1884 [CAN:NW;USA:FN,NW]
  • Leptophlebia vaciva Eaton, 1884 (orig.)
• Paraleptophlebia volitans (McDunnough), 1924 [CAN:NE;USA:NE,SE]
  • Leptophlebia volitans McDunnough, 1924 (orig.)
• Paraleptophlebia zayante Day, 1952 [USA:NW]

• Thraulodes brunneus Koss, 1966 [MEX:FS,SW;USA:SW]
  • Thraulodes sp. A Allen & Brusca, 1978 (syn.)
• Thraulodes cryptodrilus Nieto & Dominguez, 2001 [MEX:FS]
• Thraulodes eccentricus Lugo-Ortiz & McCafferty, 1996 [MEX:FS,SW]
  • Thraulodes sp. B Allen & Brusca, 1978 (syn.)
• Thraulodes ephippiatus Traver & Edmunds, 1967 [MEX:FS]
• Thraulodes gonzalesi Traver & Edmunds, 1967 [MEX:FS,SW;USA:NW,SW]
  • Thraulodes salinus Kilgore & Allen, 1973 (syn.)
• Thraulodes hilaris (Eaton), 1892 [MEX:FS]
  • Thraulus hilaris Eaton, 1892 (orig.)
• Thraulodes humeralis Navas, 1935 [MEX:FS]
• Thraulodes lunatus Traver & Edmunds, 1967 [MEX:FS,SW]
• Thraulodes mexicanus (Eaton), 1884 [MEX:FS]
  • Thraulus mexicanus Eaton, 1884 (orig.)
• Thraulodes pacaya McCafferty, Baumgardner & Guenther, 2004 [MEX:FS,SW]
  • Thraulodes sp. C. Allen & Brusca, 1978 (syn.)
• Thraulodes packeri Traver & Edmunds, 1967 [MEX:FS,SW]
• Thraulodes spangleri Traver & Edmunds, 1967 [MEX:FS]
• Thraulodes speciosus Traver, 1934 [MEX:FS,SW;USA:SW]
  • Thraulodes arizonicus McDunnough, 1942 (syn.)
• Thraulodes tenulineus Lugo-Ortiz & McCafferty, 1996 [MEX:FS,SW;USA:SW]
  • Thraulodes sp. D Allen & Brusca, 1978 (syn.)
• Thraulodes zonalis Traver & Edmunds, 1967 [MEX:FS]

• Traverella albertana (McDunnough), 1931 [CAN:NW;MEX:FS,SW;USA:NE,NW,SW]
  • Thraulus albertanus McDunnough, 1931 (orig.)
  • Traverella castanea Kilgore & Allen, 1973 (syn.)
  • Traverella sp. A Allen, 1973 (syn.)
• Traverella lewisi Allen, 1973 [USA:NE,NW,SE]
• Traverella longifrons Lugo-Ortiz & McCafferty, 1996 [MEX:FS]
  • Traverella sp. B Allen, 1973 (syn.)
• Traverella presidiana (Traver), 1934 [MEX:FS,SW;USA:SW]
  • Thraulus presidianus Traver, 1934 (orig.)
• Traverella promifrons Lugo-Ortiz & McCafferty, 1996 [MEX:FS,SW;USA:SW]
  • Traverella sp. C Allen, 1973 (syn.)
• Traverella sallei (Navas), 1935 [MEX]
  • Thraulus sallei Navas, 1935 (orig.)

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METRETOPODIDAE

• Metretopus alter Bengtsson, 1930 [USA:FN]
• Metretopus borealis (Eaton), 1871 [CAN:FN,NE,NW;USA:NE]
  • Heptagenia borealis Eaton, 1871 (orig.)
  • Metretopus norvegicus Eaton, 1901 (syn.)
  • Rhithrogena borealis (Eaton), 1871 (comb.)

• Siphloplecton basale (Walker), 1853 [CAN:NE,NW;USA:NE,SE]
  • Baetis basalis Walker, 1853 (orig.)
  • Heptagenia basalis (Walker), 1853 (comb.)
  • Siphloplecton basalis (Walker), 1853 (spell.)
  • Siphloplecton flexus (Clemens), 1913 (syn.)
  • Siphloplecton signatum Traver, 1932 (syn.)
  • Siphlurus flexus Clemens, 1913 (syn.)
• Siphloplecton brunneum Berner, 1978 [USA:SE]
• Siphloplecton costalense Spieth, 1938 [USA:NE,SE]
• Siphloplecton fuscum Berner, 1978 [USA:SE]
• Siphloplecton interlineatum (Walsh), 1863 [CAN:FN,NE,NW;USA:NE,SE]
  • Baetis femorata Walsh, 1862 (hom.: B. femorata Say, 1823)
  • Baetis interlineata Walsh, 1863 (renam.)
• Siphloplecton simile Berner, 1978 [USA:SE]
• Siphloplecton speciosum Traver, 1932 [USA:SE]

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NEOEPHEMERIDAE

• Neoephemera bicolor McDunnough, 1925 [CAN:NE]
• Neoephemera compressa Berner, 1956 [USA:SE]
• Neoephemera purpurea (Traver), 1931 [USA:SE]
  • Oreianthus purpureus Traver, 1931 (orig.)
• Neoephemera youngi Berner, 1953 [USA:SE]
  • Oreianthus sp. 1 Traver, 1937 (syn.)

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OLIGONEURIIDAE

• Homoeoneuria alleni Pescador & Peters, 1980 [MEX:SW;USA:NE,NW,SW]
• Homoeoneuria ammophila (Spieth), 1938 [USA:NE,NW]
  • Oligoneuria ammophila Spieth, 1938 (orig.)
• Homoeoneuria cahabensis Pescador & Peters, 1980 [USA:SE]
• Homoeoneuria dolani Edmunds, Berner & Traver, 1958 [USA:SE]
• Homoeoneuria salviniae Eaton, 1881 [MEX:FS]

• Lachlania dencyanna Koss, 1970 [USA:SW]
  • Lachlania dencyannae Koss, 1970 (spell.)
• Lachlania fusca (Navas), 1924 [MEX:FS]
• Lachlania iops Allen & Cohen, 1977 [MEX:FS,SW]
• Lachlania saskatchewanensis Ide, 1941 [CAN:NW;MEX:SW;USA:NE,NW,SW]
  • Lachlania powelli Edmunds, 1951 (syn.)

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PALINGENIIDAE

• Pentagenia robusta McDunnough, 1926 [USA:NE,SE] (recently extinct)
• Pentagenia vittigera (Walsh), 1862 [CAN:NE;USA:NE,SE,SW]
  • Palingenia vittigera Walsh, 1862 (orig.)
  • Pentagenia quadripunctata Walsh, 1863 (syn.)

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POLYMITARCYIDAE

• Campsurus cuspidatus Eaton, 1871 [MEX:FS,SW]
• Campsurus decoloratus (Hagen), 1861 [MEX:SW;USA:SW]
  • Hexagenia decolorata (Hagen), 1861 (comb.)
  • Palingenia decolorata Hagen, 1861 (orig.)

• Ephoron album (Say), 1824 [CAN:NE,NW;USA:NE,NW,SE]
  • Baetis alba Say, 1824 (spell.)
  • Baetis albus Say, 1824 (orig.)
  • Palingenia alba (Say), 1824 (comb.)
  • Polymitarcys albus (Say), 1824 (comb.)
• Ephoron leukon Williamson, 1802 [CAN:NE;USA:NE,SE,SW]

• Tortopus circumfluus Ulmer, 1942 [USA:SW]

• Tortopsis primus (McDunnough), 1924 [CAN:NE;MEX:SW;USA:NE,SE,SW]
  • Campsurus manitobensis Ide, 1941 (syn.)
  • Campsurus primus McDunnough, 1924 (orig.)
  • Tortopus manitobensis (Ide), 1941 (syn.)
  • Tortopus primus (McDunnough), 1924 (comb.)
• Tortopsis puella (Pictet), 1843 [USA:SE,SW]
  • Campsurus puella (Pictet), 1843 (comb.)
  • Campsurus incertus Traver, 1935 (syn.)
  • Palingenia puella Pictet, 1843 (orig.)
  • Tortopus incertus (Traver), 1935 (syn.)
  • Tortopus puella (Pictet), 1843 (comb.)

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POTAMANTHIDAE

• Anthopotamus distinctus (Traver), 1935 [CAN:NE;USA:NE,SE]
  • Potamanthus distinctus Traver, 1935 (orig.)
• Anthopotamus myops (Walsh), 1863 [CAN:NE;USA:NE,SE]
  • Anthopotamus inequalis (Needham), 1909 (syn.)
  • Anthopotamus rufous (Argo), 1927 (syn.)
  • Ephemera myops Walsh, 1863 (orig.)
  • Potamanthus inequalis Needham, 1909 (syn.)
  • Potamanthus medius Banks, 1908 (syn.)
  • Potamanthus myops (Walsh), 1863 (comb.)
  • Potamanthus rufous Argo, 1927 (syn.)
  • Potamanthus rufus Argo, 1927 (syn.)
• Anthopotamus neglectus disjunctus Bae & McCafferty, 1991 [USA:SE]
• Anthopotamus neglectus neglectus (Traver), 1935 [CAN:NE;USA:NE]
  • Anthopotamus neglectus (Traver), 1935 (comb.)
  • Potamanthus neglectus Traver, 1935 (orig.)
• Anthopotamus verticis (Say), 1839 [CAN:NE;USA:NE,NW,SE]
  • Anthopotamus diaphanus (Needham), 1907 (syn.)
  • Anthopotamus walkeri (Ide), 1935 (syn.)
  • Baetis verticis Say, 1839 (orig.)
  • Ecdyurus verticis (Say), 1839 (comb.)
  • Ephemera flaveola Walsh, 1862 (syn.)
  • Heptagenia verticis (Say), 1839 (comb.)
  • Potamanthus betteni Morgan, 1913 (syn.)
  • Potamanthus diaphanus Needham, 1907 (syn.)
  • Potamanthus flaveola (Walsh), 1862 (syn.)
  • Potamanthus verticis (Say), 1839 (comb.)
  • Potamanthus walkeri Ide, 1935 (syn.)

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PSEUDIRONIDAE

• Pseudiron centralis McDunnough, 1931 [CAN:NE,NW;USA:NE,NW,SE]
  • Pseudiron meridionalis Traver, 1935 (syn.)

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SIPHLONURIDAE

• Edmundsius agilis Day, 1953 [USA:NW,SW]

• Parameletus chelifer Bengtsson, 1908 [CAN:FN,NE,NW;USA:FN]
  • Sparrea norvegica Esben-Petersen, 1909 (syn.)
• Parameletus columbiae McDunnough, 1938 [CAN:NW;USA:NW]
• Parameletus croesus (McDunnough), 1923 [CAN:NE]
  • Siphlonuroides croesus McDunnough, 1923 (orig.)
• Parameletus midas (McDunnough), 1923 [CAN:NE]
  • Siphlonuroides midas McDunnough, 1923 (orig.)

• Siphlonisca aerodromia Needham, 1909 [CAN:NE;USA:NE]

• Siphlonurus alternatus (Say), 1824 [CAN:FN,NE,NW;USA:FN,NE]
  • Baetis alternata Say, 1824 (spell.)
  • Baetis alternatus Say, 1824 (orig.)
  • Baetis annulata Walker, 1853 (syn.)
  • Baetis annulatus Walker, 1853 (syn.)
  • Baetis femorata Provancher, 1876 (syn.)
  • Siphlurella alternata (Say), 1824 (comb.)
  • Siphlurus alternans (Say), 1824 (spell.)
  • Siphlurus alternatus (Say), 1824 (comb.)
• Siphlonurus autumnalis McDunnough, 1931 [CAN:NW;USA:NW]
• Siphlonurus barbaroides McDunnough, 1929 [CAN:NE;USA:NE]
• Siphlonurus barbarus McDunnough, 1924 [CAN:NE;USA:NE]
• Siphlonurus columbianus McDunnough, 1925 [CAN:NW;USA:NW,SW]
• Siphlonurus decorus Traver, 1932 [USA:SE]
• Siphlonurus demaryi Kondratieff & Voshell, 1981 [CAN:NE;USA:NE]
• Siphlonurus luridipennis (Burmeister), 1839 [USA:SE] (recently extinct)
  • Baetis luridipennis Burmeister, 1839 (orig.)
  • Ecdyurus luridipennis (Burmeister), 1839 (comb.)
  • Heptagenia luridipennis (Burmeister), 1839 (comb.)
• Siphlonurus marginatus Traver, 1932 [USA:NE,SE]
• Siphlonurus marshalli Traver, 1934 [CAN:NE;USA:NE,SE]
• Siphlonurus minnoi Provonsha & McCafferty, 1982 [USA:NE,SE]
• Siphlonurus mirus (Eaton), 1885 [CAN:NE;USA:NE,SE]
  • Siphlurus mirus Eaton, 1885 (orig.)
• Siphlonurus noveboracana (Lichtenstein), 1796 (dub.) [USA:NE]
  • Baetis noveboracana (Lichtenstein), 1796 (comb.)
  • Ephemera noveboracana Lichtenstein, 1796 (orig.)
• Siphlonurus occidentalis (Eaton), 1885 [CAN:FN,NW:MEX:FS,SW;USA:FN,NW,SW]
  • Siphlonurus inflatus McDunnough, 1931 (syn.)
  • Siphlurella occidentalis (Eaton), 1885 (comb.)
  • Siphlurus occidentalis Eaton, 1885 (orig.)
• Siphlonurus phyllis McDunnough, 1923 [CAN:FN,NE,NW;USA:NE,NW]
• Siphlonurus quebecensis (Provancher), 1878 [CAN:NE;USA:NE,SE]
  • Baetis canadensis Provancher, 1876 (hom.)
  • Siphlurus quebecensis Provancher, 1878 (orig.)
  • Siphlonurus triangularis Clemens, 1915 (syn.)
• Siphlonurus rapidus McDunnough, 1924 [CAN:NE;USA:NE]
• Siphlonurus securifer McDunnough, 1926 [CAN:NE;USA:NE]
• Siphlonurus spectabilis Traver, 1934 [CAN:FN;USA:NW,SW]
  • Siphlonurus maria Mayo, 1939 (syn.)
• Siphlonurus typicus (Eaton), 1885 [CAN:NE;USA:NE]
  • Siphlonurus berenice McDunnough, 1923 (syn.)
  • Siphlonurus bernice McDunnough, 1923 (syn.spell.)
  • Siphlonurus novangliae McDunnough, 1924 (syn.)
  • Siphlurus typicus Eaton, 1885 (orig.)