Geographic Coverage
Broad geographic regions in which the species have been observed, based on published records, are indicated by two-letter codes in brackets following the valid species names. These codes and their areas are indicated on the accompanying map of North America, using two-letter abbreviations:
- FN=far north (above the 60th parallel)
- FS=far south (below the Tropic of Cancer)
- HI=Hawaii
- NE=northeast
- NW=northwest
- SE=southeast
- SW=southwest
See Species List for usage examples. In addition actual countries of distribution are also given, using three-letter abbreviations:
- CAN=Canada
- GRE=Greenland
- MEX=Mexico
- SPM=Saint Pierre and Miquelon
- USA=United States
As an example, USA:FN indicates an Alaskan distribution whereas MEX:SW indicates a northern Mexican distribution. Only FS, HI and SE are unique to one country (FS to Mexico, HI & SE to the United States).
Extralimital distributions of species in the coverage area are indicated with four-letter abbreviations as follows:
- AFRI=Africa
- ASIA=Asia
- CAMR=Central America
- EURO=Europe
- SAMR=South America