A global citizen science platform
to discover, share and identify wildlife
"Upperside of male forewing yellow with wide black apex. Hindwing with black border. Female yellow or white (rare) with black borders. 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. Nectars from flowers in the aster family (Asteraceae) including goldenrods and asters." Two black basal spots are distinctive.