Lasiocampidae la·sio·cam·pidae uncommon noun 1. tent caterpillars; eggars; lappet moths Synonymsfamily Lasiocampidae Related words Broader terms arthropod family Parts Lepidoptera Part of lasiocampidLasiocampaMalacosomalappet caterpillarwebwormHyphantriaLoxostege WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.