Pest Status: The cabbage looper feeds on a variety of crops, consuming foliage, and is one of the most destructive insect pests of vegetables.
Appearance: Cabbage loopers are a light-green color with light stripes extending down the back. They reach approximately 1 1/2-inches long.
Life Cycle: Adults emerge in the spring, mate, and fly to a host plant. The eggs are smooth and light green, and within three days, larvae hatch from the eggs. The larvae develop over a month before spinning a silk cocoon in which they form a green-brown pupal case. Adults emerge in about 13 days. They feed on the undersides of leaves between the veins, skeletonizing plants.
Where to Collect: Loopers are present from early spring to late fall, usually close to where the immatures feed.
Purdue Extension Entomology, 901 West State Street, West Lafayette, IN 47907 USA, (765) 494-4554