Upperside of both male and female is white, with black spots near tip of forewing. Inside the forewing cell is a square black bar with a curved white center. The underside of the hindwing of both sexes has wide green edging along the veins, confined by a white median band.
Females lay eggs singly on host stems, buds, leaves, flowers, and fruits.
Several flights from March-October. Flower nectar including hedge mustard and alfalfa. Arid brushlands, desert foothills and canyons, fields. G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Scott, J. A. 1986.