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North American Ecology (US and Canada)Mostly migratory in North America (Scott 1986). Habitats are OPEN AREAS AND ROADSIDES. Host plants are usually herbaceous with most known hosts largely restricted to a few species in one family, COMPOSITAE. Eggs are laid on the host plant singly. There are multiple flights each year with the approximate flight time MAR1-DEC31 depending on latitude (Scott 1986).