Lab
8: Defoliators (II)
Picture Sheet 3 of 4
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Click on
the pictures for larger view. |
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the pictures for larger view. |
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Prolegs of the white larvae (red headed pine sawfly) are naked and
lack any hook-like crochets.
Caterpillar prolegs have hook-like crochets.
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Skeletonization caused by elm
leaf beetle. |
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Pear slug on cottoneaster.
Note the slimy slug-like appearance of this sawfly. Also note how it
skeletonizes leaves by removing only the upper leaf surface.
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Adult elm leaf beetles feed on
leaves. |
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Elm leaf beetles have been a common pest in
the mid-west, They have not been problematic since 1993 in Indiana. |
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Larvae of elm leaf beetles feed on leaves.
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