A chiefly American moth caterpillar that lives in groups inside communal silken webs in a tree, which it often defoliates.
- Several species in the family Lasiocampidae, especially Malacosoma americana, related to the lackey
- Farms should minimize or eliminate the exposure of pregnant mares to the eastern tent caterpillar.
- The forest tent caterpillar is the major pest in hardwood stands, and severe outbreaks were reported in the area during the 20th century.
- From the way tent caterpillar nests are proliferating on wild cherry, apple and crabapple trees, cuckoos will be encouraged to raise large families, as those pupae are cuckoos' staple food.
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