It is a species of butterfly in the family Lepidoptera. It occurs in large numbers in the summer on the grasslands of the United States and Europe. The larvae are velvety brown or green, with small, forked caudal appendages. Adult butterflies have brown wings with a wingspan of about 5-6cm. The most prominent feature is the conspicuous spots (ring markings) on the wings. The false eyes on these wings may be used to frighten or confuse predatory birds. A defense mechanism. Adult antennae end gradually thickened, but not obvious; forefoot degeneration, contraction not used. Ecological habits and morphological characteristics make it have a certain protective color in the natural environment, which helps to survive in the grassland environment.

Also known as the eye butterfly, it is a butterfly commonly found on the grasslands of Europe and Asia. Belonging to the Lepidoptera family, it is a small to medium-sized butterfly with brown wings and distinct circular eye spots that may be used to scare or confuse predatory birds. Larvae typically have a velvet like brown or green color and small, forked tail like appendages on their bodies. The tips of adult antennae gradually thicken, but not significantly; Forefoot degeneration, no need for contraction, males only have one tarsi, females have 4 to 5 tarsi, and claws are completely degenerated. The underside of the wings often has numerous eye shaped circular markings near the outer edge. It appears extensively in summer, especially on the grasslands of the United States and Europe.