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North American Ecology (US and Canada)Resident in western North America, north to Alaska, with isolated populations in New Brunswick and Quebeck (Scott 1986). Habitats are mostly transition to lower Hudsonian Zone woodland openings, sometimes chaparral. Host plants are usually herbaceous and include many species, but mostly in one family, Leguminosae. Eggs are laid on the host plant singly. Individuals overwinter as larvae. There is a either one or two flights based on latitude, with the approximate flight time late May -July 15 in the northern part of the range, Mar1-Apr30 in California, and late April ? Aug15 in most of the rest of the range (Scott 1986).