Eggs are laid singly on upper surface of host leaves, which caterpillars eat. Caterpillars are solitary and rest on the underside of leaves.
Adults hibernate and mate the following spring.
One brood from May-August. Flower nectar, dung, carrion. Forests, mountain streamsides, canyons. Boreal North America south of the tundra. A separate population occurs in the southern Appalachians.