Northern Prairie Wildlife Research Center
Large caterpillar densely covered with black coarse setae of 1 length. Like woolly bear, rolls up with head held to rear when disturbed. In this posture, red intersegmental rings conspicuous. Spiracles orange or red. Food: polyphagous on low-growing plants, and many forest trees and shrubs. Caterpillar: overwinters, August to May; 1 generation in North.