'Ypsolophus pometellus' definitions:

Definition of 'Ypsolophus pometellus'

From: GCIDE

Palmerworm \Palm"er*worm`\, n. (Zool.) (a) Any hairy caterpillar which appears in great numbers, devouring herbage, and wandering about like a palmer. The name is applied also to other voracious insects. --Joel. i. 4. (b) In America, the larva of any one of several moths, which destroys the foliage of fruit and forest trees, esp. the larva of Ypsolophus pometellus, which sometimes appears in vast numbers. [1913 Webster]