Common Ringlet.

Remarkably variable geographically, and may constitute more than one species. Overall color varies: creamy white (California and southwest Oregon), yellow-cream (most of west), yellow-orange (most of Canada) blending to orange-brown (eastern Canada) and two-toned white and yellow-cream (northwest Canada and Alaska). Hindwing below has a pale median band (often discontinuous), thickened near the center, and a row of black submarginal eyespots (or pale spots) present or absent. Most populations have some individuals with a black spot near tip of forewing below. Populations from Great Basin southward to Arizona/New Mexico generally have well-developed row of spots along submarginal below. Populations elsewhere have submarginal spots faint or lacking altogether. --- (Kaufman Field Guide to Butterflies of North America, by Jim P. Brock & Kenn Kaufman.)