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Northern Prairie Wildlife Research Center

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Caterpillars of Eastern Forests

Glossy Black Idia (Idia lubricalis)

JPG-Photo of Glossy Black Idia

Very dark with rusty peglike setae on head and body. Dorsum of abdomen with 2 pairs of raised knobs on each segment: front pair black, closer to midline, with peglike setae directed forward; back pair rusty orange, with peglike setae directed backward. Prolegs on abdominal segment 3 strongly reduced. Food: lichens, grasses, rotten wood, and other organic matter. Caterpillar: overwinters, September to May; 1 generation.

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