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North American Ecology (US and Canada)Speyeria atlantis is resident throughout southern Canada,into Alaska, and into the southwestern United States (Scott 1986). Habitats are forest openings, often in moist meadows and streamsides. Host plants are herbs restricted to the genus Viola (Violaceae). Eggs are laid haphazardly near the host plant singly. Individuals overwinter as unfed first-instar larvae. There is one flight each year with the approximate flight time late June-Aug 31 (Scott 1986).