The Collaborative International Dictionary of English v.0.48:
Eriosoma \Eriosoma\ n. a genus of plant lice of the family Aphididae, consisting of one type of the wooly aphids. Syn: genus Eriosoma. [WordNet 1.5 +PJC]WordNet (r) 3.0 (2006):
Eriosoma n 1: woolly aphids [syn: Eriosoma, genus Eriosoma]