Aphantopus hyperantus, commonly known as the ringlet butterfly, is a species of butterfly found primarily in Europe and parts of Asia. It typically inhabits grasslands, meadows, and woodland edges, where it can be seen fluttering among grasses and low vegetation. The wings are brown with distinctive eye spots, which help to camouflage the butterfly from predators. This butterfly has a wingspan of about 30 to 35 millimeters and is most active during the summer months. The larvae feed on various grasses, and the species undergoes a complete metamorphosis, transitioning from egg to caterpillar, then to pupa, and finally to adult butterfly.