44 - 46mm
Males and females are very similar, but the female is slightly paler in colour. Both have a deep, rich orange overall colour over the upper wings, interspersed by a thick lattice work of dark brown barring and vein markings. The male has a broad sex-brand across the forewing. Both have a prominent eye-spot on the forewing (black with a central white dot) and four across the back edge of the hindwings. The inner half of the hindwings are overall brown. All four wings have an outer broad brown border and final pale fringe, cross-marked by the dark vein endings. The underside forewings are predominantly orange with much finer brown markings and only a scalloped blackish line just before the fringe.
The first generation of the Wall butterfly is seen on the wing in May (or even April in a hot spring) to June, and those of the second generation from July to September.
A large range of mainly yellow flowers, such as Dandelion, Hawkbits, and Trefoils are used for nectaring.