The length of the wing to the wing is 34-40mm. The color of wing surface is dark brown. There are dot patterns(7~8 units) in a front wings, and there are dot patterns(4 units) side by side in a back wings.
Dot patterns of female are larger than that of male.
It prepares for winter in state of larva. They live in Korea, Japan, Bangladesh, Myanmar, Taiwan, India, Indochina, China, Himalaya(s), Amur etc.