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North American Ecology (US and Canada)Boloria epithore is a resident in northwestern North America from mid-British Columbia south to central Calif. (Scott 1986). Habitats are most forest openings and wet meadows. Host plants are usually herbaceous, restricted to several species within one genus, Viola (Violaceae). Individuals overwinter as fourth-instar larvae. There is flight each year with the approximate flight time May 15-June 30 in coastal ranges, June 1-July 31 inland, and July 31-Aug 15 at high altitude (Scott 1986).