Northern Prairie Wildlife Research Center
Distinctively colored with red or purple-brown dorsum marked with faint striping, bounded by broad but diffuse black stripe that continues on head down to eyes. Sides green to straw. Head mottled with browns. Second abdominal segment with black spot immediately behind spiracle. Venter green. Food: many trees, shrubs, and forbs, including a number of crops. Caterpillar: May to October; 2 generations in North.