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North American Ecology (US and Canada)Resident in North America (Scott 1986). Habitats are CONIFEROUS FORESTS, SAGEBRUSH, GRASSLAND, OPEN OAK WOODLAND IN CA. Host plants are usually herbaceous including many species, mostly in one family, LEGUMINOSAE. Eggs are laid on the host plant singly. One or two flights based on latitude with the approximate flight time JUN30-AUG1 depending on latitude (Scott 1986). Sometimes listed as a subspecies of Colias alexandra.