Northern Wall Brown
- Family: Brushfooted Butterflies – Nymphalidae
- Subfamily: Browns – Satyrinae
- Wing span: Medium-sized, 33–42 mm (1.29–1.64 in.).
- Wing upper side: Brown, forewing apex with noticeably large eyespot, edge of hind wing with row of smaller eyespots. Eyespots mainly black with white centre and surrounded by reddish orange ring. Forewing possibly with reddish patches below large eyespots. Leading edge of forewing and centre of hind wing with darker brown stripes.
- Wing underside: Forewing brown, tip with large eyespot and edge with red embroidery. Hind wing grey, centre with two long, brown wavy stripes and edge with row of black eyespots with white centre, surrounded by yellowish and brown rings.
- Habitat: Dry forest heaths.
- Flying time: (Late May–)June.
- Overwintering form: Cocoon.
- Larval foodplant: Different grasses (Poaceae), e.g. reed canarygrass (Phalaris arundinacea) and Scandinavian small-reed (Calamgrostis purpurea).
- Endangerment: Near threatened.
The northern wall brown is fairly common in central and southern Finland, and can be separated from other browns (except large wall brown) by the large eyespots on the upper surface of the apex of the forewing. It can be told apart from the large wall brown by its smaller size and the fact that the stripes in the middle of the leading edge on the upper side of the northern wall brown’s forewing and the middle of its hind wing are darker than the rest.
Males wait for females, defending their territory in forest margins and on rocks. The females lay their eggs individually on the leaves of the host plant.