1) Caterpillar 2) Caterpillar pest 3) Tree-limb pest 
(from the article `lepidopteran`) ...or wasp nests; larvae of the large subfamily Phycitinae have very diverse habits, including predation on scale insects.Family Crambidae ...
Web'worm` noun (Zoology) Any one of various species of moths whose gregarious larvæ eat the leaves of trees, and construct a large web to which they retreat when not feeding. » The most destructive webworms belong to the family Bombycidæ , as the fall webworm ( Hyphantria textor
[n] - several gregarious moth larvae that spin webs over foliage on which they feed
noun several gregarious moth larvae that spin webs over foliage on which they feed