Northern Prairie Wildlife Research Center
Tannish stick mimic sometimes with faint middorsal and midventral stripes. Head flat-faced, subquadrate mottled with tan, white, black, and occasionally pink; often with black spots forming dark blotch to either side of triangle. Dorsum of thoracic segments with fine, closely paired black lines. Second abdominal segment modestly swollen with low yellowish-orange dorsolateral swelling that includes spiracle. Dorsum of eighth abdominal segment bears paired blackened warts. Food: many deciduous trees and shrubs, even clover, cotton, and grasses. Caterpillar: May to November; 2 generations in North.