Coenonympha arcania, the pearly heath, is a butterfly species belonging to the family Nymphalidae.

Forewing fiery reddish yellow with black distal margin, hindwing dark brown.

Easily recognised by the underside of the hindwing, whose marginal portion is occupied by a broad white band, which in the nymotypical form interrupts the row of ocelli below the apical eye, the latter therefore appearing to be placed on the inside of the white band.

The butterflies fly in one generation from May to August.They usually sit in sunny spots with their wings closed.

The larvae feed on various grasses including Holcus lanatus and Festuca ovina.The females lay their eggs individually or in small groups on the stalks of the forage plants.