tent caterpillar
noun
1- a chiefly American moth caterpillar that lives in groups inside communal silken webs in a tree, which it often defoliates天幕毛虫, 枯叶蛾。
1.1
- Several species in the family Lasiocampidae, especially Malacosoma americana, related to the lackey.枯叶蛾科中数种, 尤指苹天幕毛虫, 与天幕毛虫有关。