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Alleghenian Lichen-moth
The head and anterior portions of the thorax are pale yellow. The patagia are of the same color. The thorax and the abdomen on the upper side are pale slaty-gray. The legs and the tip of the abdomen on the under side are ochreous, the middle of the abdomen on the under side being dark slaty-gray. The fore wing on the upper side is slaty-gray, with the costa evenly edged with pale yellow. The hind wings are translucent white. On the under side the wings are marked as on the upper side, but paler. The insect is slightly smaller than casta. It occurs in western Pennsylvania. The type, which is in the collection of the author, was taken by him in East Pittsburgh.