Northern Prairie Wildlife Research Center
Green or blue-green, with indistinct black circlets on thoracic segments and below spiracles on abdominal segments. Head dark green with greenish lateral bands not meeting over top of head. Thoracic segments evenly green. Abdomen with 7 oblique white stripes, edged anteriorly with magenta or lavender, each limited to single segment. Horn blackened, at least laterally. Food: many shrubs and trees, including some softwoods. Caterpillar: April through September; 1 generation.