Northern Prairie Wildlife Research Center
Moderately large, handsomely outfitted with rusty orange setae, each frosted at tip. Head black. Dorsal setae mostly of 1 length with orange and or mostly black shafts. Low unpaired, dorsal tufts on first, third, and eighth abdominal segments. Shafts of lateral setae without black. Spiracles white. A few fine setae extend out from others at either end of body. Food: alders, birches, poplars, willows, and other hardwoods. Caterpillar: June to October; 1 generation in North.