Upperside of male forewing yellow with wide black apex. Hindwing with black border. Both sexes with small black spot in forewing cell. Males patrol for females during warm daylight hours.
Females lay eggs singly on midveins or between leaflets of host plant leaves.
Dry, open areas including roadsides, sandy fields, abandoned fields, along railroad tracks, and occasionally open woods. G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Opler, P. A. and G. O. Krizek. Butterflies east of the Great Plains. Johns Hopkins University Press, Baltimore.