Imported Cabbageworm (Pieris rapae) prefers to feed on cabbage, cauliflower, broccoli, Brussels sprouts, turnips, radishes, kale, lettuce and weeds of the mustard family. In fact, this pest is one of the most damaging and destructive enemies of these plants. It is a widespread insect with populations spread throughout Europe, North Africa, Asia, Great Britain, and yes, North America, too. [It was accidentally introduced to North America around 1860.] The adult butterfly goes by the common name of Small White or Small Cabbage White and belongs to the family called Pieridae.
Additional Information: Imported Cabbageworm