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North American Ecology (US and Canada)Resident in coastal southern California (Scott 1986). Habitats are coastal dunes, chaparral, and open woodland in s. Calif.. Host plants are restricted to several herbaceous and shrub species of the family Compositae, with main host species Corethrogyne filaginifolia bernardina. Eggs are laid on the host plant in clusters. Individuals overwinter as third instar larvae. There is one flight each year with the approximate flight time April1-May 31, and rarely a partial summer flight (Scott 1986).