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Lab
8: Defoliators (II)
Picture Sheet 1 of 4 |
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This leaf has been skeletonized by an elm leaf beetle. The pest only removed the leaf tissue between the veins. |  |
This leaf cutter bee is a beneficial insect and not a pest. It is an important pollinator. |
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This defoliation is call notching. These irregular notches are typical of leaf notching weevils like black vine weevil. |  |
European pine sawflies removed the young foliage of this pine. |
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Circular notches are caused by leaf cutter bees. |  |
This European pine sawfly is laying an egg in a Scotch pine needle. Note how its sawlike ovipositor is cutting a slit in the needle and leaving behind a yellow scar. Yellow scars are diagnostic of an infestation. |
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