Northern Prairie Wildlife Research Center
Pale green with 3 or 4 (usually) wavy yellowish stripes running down each side of body. Head sea green, shiny. Dorsum darker green with interrupted middorsal stripe with single white spot to either side. Subdorsal stripe broad, white, sometimes fusing with and obscuring uppermost lateral pinstripe. Spiracles yellowish. Food: many broadleaf trees and shrubs. Caterpillar: May to July; 1 generation in North.