- Family: Brushfooted Butterflies – Nymphalidae
- Subfamily: Browns – Satyrinae
- Wing span: Medium-sized, 35–45 mm (1.37–1.76 in.).
- Wing upper side: Brown–brownish black. At apex of forewing often brownish orange area with black spots without white centre. Spots possibly also along hind wing margin.
- Wing underside: Forewing rust-red, margin with black spots. Hind wing grey–light brownish grey, darker greyish brown lateral band in centre. Edge of wing often with row of short dark stripes.
- Habitat: Moors and bogs.
- Flying time: Late June–mid-July.
- Overwintering form: Caterpillar (overwinters twice).
- Larval foodplant: Different grasses, especially fescues (Festuca) and meadow grasses (Poa)
- Endangerment: Near threatened.
The dewy ringlet is no exception from its close relatives in that its wings have eyespots surrounded by a red or reddish yellow area. It can be differentiated from other ringlets, however, in that its eyespots lack a white centre. The species is most like the Lapland ringlet, although the underside of its forewing is brown, not rust-red like the dewy ringlet. It also lacks the white blotches on the underside of the wing that are typical of the Arran brown and the Lapland ringlet.
The dewy ringlet is the most common butterfly in Lapland. The males fly around looking for females, who probably lay their eggs individually on the host plant or close by.