Size
Wing span: 1 1/2 - 2 1/4 inches (3.8 - 5.7 cm).(1)
Identification
Summer form is pure white above and below; spring form has black-tipped upper forewing. Underside of hindwing and apex of forewing have veins edged with yellow-green or gray-green.(1)
Range
Southern British Columbia and Alberta south to central California and southern New Mexico; east to eastern Wyoming and eastern Colorado.(1)
Habitat
Forests, meadows, deciduous woods, streamsides.(1)
Season
Two or more flights from February-September in the West.(1)
{observed April thru November in central New Mexico - Dave Ferguson - 7-20-09}
Food
Caterpillar hosts: Various native plants in the mustard (Brassicaceae) family.
Adult food: Nectar from flowers of the mustard family and other plants.(1)
Life Cycle
Males patrol for receptive females. Eggs are laid singly on underside of host plant leaves on which the caterpillars feed. Chrysalis hibernates.(1)
