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North American Ecology (US and Canada)Resident in western North America (Scott 1986). Habitats are MOUNTAINS. Host plants include many mostly herbaceous species family of Umbelliferae, and trees and herbs in family Rutaceae. Eggs are laid on the host plant singly. Individuals overwinter as pupae. There are a variable number of flights based on latitude each year with the approximate flight time MAY1-JUN15 in the northern part of the range and MAR1-SEP30 in the southern part of their range (Scott 1986).