Field guide · Sweden
Brush-footed butterflies · Sweden

Scarce heath

Coenonympha hero

One of our smallest grass butterflies, with uniformly chocolate-brown wings and six orangish-coloured eye spots on the underside of its hindwings. It is associated with older agricultural landscapes in forested areas and is assessed as near threatened (NT) in the 2020 Red List.

Status in this countryRare in SwedenNT (Near threatened)
Scarce heath
Photo: Bouke ten Cate · CC BY 4.0

Flight period

The butterfly emerges and flies primarily during the middle and second half of June, with a gradually decreasing number at the beginning of July.

Habitat

Blomrika, well-sunlit grassland habitats situated within small-scale agricultural landscapes; grassland and herb-rich “forest meadows”.

Identifying features

Wingspan 27–32 millimetres. The upper sides of the wings are uniformly chocolate brown, with an orange border on the hindwings. The underside of the hindwing is scalloped with white markings, with three narrow lines in dark brown, orange, and silver, six orange-tinged eye spots, and a white, mottled cross-band.

Similar species

A possible look-alike species is pearly heath ( Coenonympha arcania), but they differ on the underside of the hindwing: in pearly heath, the uppermost eyespot is located inside the white cross-band, while all eyespots are located outside it in scarce heath. The upperside of the forewing is orange in pearly heath and chocolate brown in scarce heath.

Distribution

The core area consists of Värmland, as well as southern and central Dalarna; previously also in Skåne, where it disappeared in 1996.

Biology

The larvae live on various grass species and overwinter by sitting on vegetation near the ground, usually in the third stage.