Northern Prairie Wildlife Research Center
Body chalky or waxy green dabbled with numerous pale spots. Head somewhat angulate to either side, deep reddish brown, with 3 pairs of orange spots, upper 2 pairs may be partly joined. Subdorsal stripe sometimes yellowish, occasionally indistinct. Other oak-feeding species of Erynnis occur in eastern forests; identifications should be confirmed through rearing. Food: oaks. Caterpillar: April until leaf fall, caterpillar overwinters in fallen leaf shelter; 1 generation.