Northern Prairie Wildlife Research Center
Pattern highly variable; typically bright green with pale subdorsal stripes and distinctive brown or purple V-shaped saddle atop third and fourth abdominal segments. Greenish head flattened with lateral reddish band edged outwardly with yellow and inwardly with white and black bands. Food: general feeder but especially common on sugar maple, beeches, and apples. Caterpillar: July to August; 2 generations.