Arctic fritillary (Boloria chariclea). Caterpillars feed on many plants including violets (Viola), American bistort (Polygonum bistortoides), and Cascade huckleberry (Vaccinium deliciosum).
U.S. National Park Service
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Dee Dether North Coast and Cascades Research Learning Center
Person: Program Manager Organization: US National Park Service Address: North Cascades National Park Service Complex C/O North Coast and Cascades Research Learning Center, Sedro-Woolley, WA 98284