Loxostege similalis lo·xos·te·gesimilalis uncommon noun 1. a variety of webworm Synonymsgarden webwormLoxostege similalis 2. moth whose larvae are garden webworms SynonymsLoxostege similalis Related words Broader terms webworm mothwebworm Parts Loxostege WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.