Photo courtesy Curtis Miyasaka, Alabama
March 28, 2008
Copyright (c) 2008, CM

Photo courtesy Peter J. Bryant
Natural History of Orange County, California

Photo courtesy Janice Stiefel
In the town of Greenbush, Sheboygan Co., Wisconsin
Copyright (c) Janice Stiefel

Identification: The small butterfly is white, with one or two rounded black spots on the dorsal forewing. There will be a black patch at the apex of the forewing. The upper side is white; the underwide is mustard-like to greenish-yellow. The caterpillar host plants are radish, cabbage, cauliflower, kale, and collard.