The Collaborative International Dictionary of English v.0.48:
Hyphantria \Hyphantria\ n. A genus of moths whose larvae are called fall webworms. Syn: genus Hyphantria. [WordNet 1.5]WordNet (r) 3.0 (2006):
Hyphantria n 1: fall webworms [syn: Hyphantria, genus Hyphantria]