Underside is reddish-brown with white markings. Eggs are laid on the upperside of host plant leaf tips.
Caterpillars feed on leaves and partially-grown caterpillars overwinter in rolled leaf shelters.
Several flights in California, probably one flight in the northern part of its range. Forest edges, mountain canyons, orchards, parks, streamsides, fencerows and groves of cottonwood and poplar. Baja California, east to western Montana and Idaho. G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Scott, J. A. 1986.