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North American Ecology (US and Canada)Resident throughout North America (Scott 1986), except in the Western United States south of British Columbia and West of the Rocky Mountains. Habitats are DECIDUOUS WOODED AREAS. Host plants include species from many families. Hosts are usually shrubs or trees. Eggs are laid on the host plant singly. Individuals overwinter as pupae. There is one flight each year with the approximate flight time JUN1-JUL31 depending on latitude (Scott 1986). Some authors consider P. canadiensis a subspecies of P. glaucus (Scott 1986).