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Lab
8: Defoliators (II)
Picture Sheet 3 of 4 |
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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. |  |
Larvae of elm leaf beetles feed on leaves. |
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