Word Study
Orgyia
CIDE DICTIONARY
Orgyia, prop. n. [NL., fr. Gr. the length of the outstretched arms. So named because, when at rest, it stretches forward its fore legs like arms.].
A genus of bombycid moths whose caterpillars (esp. those of Orgyia leucostigma ) are often very injurious to fruit trees and shade trees. The female is wingless. Called also vaporer moth . [1913 Webster]
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