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The Cabbage Looper is a member of the moth family Noctuidae. The caterpillar, a measuring worm, is smooth and pale green with white stripes and is one of a many species called cabbage worm. It is called a "looper" because it arches its body as it crawls, inchworm-style. This species is very destructive to plants due to its voracious consumption of leaves. It is not restricted to cole crops; other plant hosts include tomato, cucumber, collard greens, and potato. The adult of the species is a nocturnal brown moth.