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North American Ecology (US and Canada)Polygonia oreas is resident in the northern Rockies, eastern Washington, eastern Oregon to northern California and northern California (Scott 1986). Habitats are coastal Redwood forest and woodlands. Host plants are shrubs with known hosts restricted to one genus, Ribes (Grossulariaceae). Eggs are laid on the host plant leaves. Individuals overwinter as adults. There are variable numbers of flights each year based on latitude, with one flight in late July in the northern part of their range and higher mountains, and two flights in the southern part of their range with approximate times June 15-July15, and late Aug. (Scott 1986). Considered by some sources as a subspecies of P. progne.