- Family: Brushfooted Butterflies – Nymphalidae
- Subfamily: Admirals and relatives – Limenitidinae
- Wing span: Medium-sized–large, 48–59 mm (1.87–2.3 in.).
- Wing upper side: Dark brownish–black with broad white stripe on mid-wing, faint red embroidery at apex of forewing and back corner of hind wing, small white blotches on leading edge and apex of forewing. Close to wing margins dark blotches, forewing botches whole, hind wing blotches divided in two.
- Wing underside: Rust-red, white lateral strip. Wing margins with two rows of black blotches. Base of wings bluish grey.
- Habitat: Open forests.
- Flying time: July.
- Overwintering form: Caterpillar (not in Finland).
- Larval foodplant: Honeysuckles (Lonicera).
The white admiral is a casual wanderer in Finland and is most likely to be confused with the larger poplar admiral, the purple emperor and the lesser purple emperor. However, the white admiral lacks the row of red arcs along the edge of the upper surface of the hind wing that is typical of the poplar admiral. The purple emperor has an eyespot on the back corner of its hind wing, which the white admiral lacks.