Northern Prairie Wildlife Research Center
Bright green, elongate and somewhat flattened with prominent yellowish subdorsal stripe. Resembling bomolochas, with splayed anal prolegs; prolegs on third and fourth abdominal segments slightly reduced in size. Head large, green and unmarked; labrum creamy. Setae short and inconspicuous. Food: ashes, ironwoods, hickories, and walnuts. Caterpillar: June to October; 2 generations in South, 1 in North.