Common buckeye

The Common buckeye has gray-brown wings marked with two large, dark eyespots ringed in orange and blue on each hindwing, plus a smaller pair near the forewing tip, and a pale cream band crossing the forewing.

Caterpillars feed on plants of the plantain and snapdragon families, taking up bitter iridoid compounds from these hosts that make them distasteful to ants, and northern populations cannot survive winter, so the species recolonizes the north each year as adults move up from the south.