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Northern Prairie Wildlife Research Center

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Caterpillars of Pacific Northwest
Forests and Woodlands

Drepana arcuata [Drepanidae]

Dorsum with shades of brown, purple, and black on green; white-tan head with two dark brown transverse bands; anal segment extended into a single point; knobby warts most prominent on T2-A2;. This species is not common and only feeds on red alder during July and August.

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