Northern Prairie Wildlife Research Center
Another unique slug caterpillar. Charcoal black or brown, with unmistakable lime green abdominal saddle. Saddle with central brown patch ringed with white. Dorsum of first and eighth abdominal segments with fingerlike lobes bearing numerous stinging spines. Sting intense and of considerable duration. Food: broadly polyphagous on trees, shrubs, grasses such as corn, and other garden plants. Caterpillar: July to October; 1 generation in North.