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North American Ecology (US and Canada)Satyrium fulginosa is resident to North America, found in patchy distribution in the northwestern United States into southern British Columbia and Alberta (Scott 1986). Habitats are transition to Hudsonian zone sagebrush, mostly in hilly areas. Host plants are shrubs, restricted to a few species in one genus Lupinus, Leguminosae. Eggs are laid on the host plant or at the base of the host plant, singly. Individuals overwinter as eggs. There is one flight with the approximate flight time July1-July31 (Scott 1986). Scott 1986 considers this species synonymous with Satyrium fuliginosum.