webworm
/ˈwɛbˌwɜrm/
noun
- A caterpillar that spins a web over the leaves of trees or plants and feeds on them, often causing damage.
- Gardeners often look for webworm nests to remove them early in the season.
- A heavy infestation of webworm can strip a tree of its leaves by midsummer.
- The webworm covered the apple tree with a silky tent of threads.