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The Collaborative International Dictionary
Hyperchiria Io

Io moth \I"o moth`\ (?; 115). (Zo["o]l.) A large and handsome American moth ( Hyperchiria Io), having a large, bright-colored spot on each hind wing, resembling the spots on the tail of a peacock. The larva is covered with prickly hairs, which sting like nettles.