A large black butterfly with prominent white bands on both wings, upperside and underside. Males and females are similar. It could be confused with species in the genius Hipparchia, which are smaller, and species which are similarly marked have solid white bands, rather than forewing white band which is broken, rather than a continuous band, and without the two white marks along the costa of the underside. Their hindwing underside is cryptic, rather than a prominent white postdiscal band, and a white discal band.
Generalised wing venation diagram
A generalised diagram of butterfly wing venation, with anatomical labels - by Gillian Elsom.
Nymphalidae wing venation diagram
The wing venation of a Peacock butterfly Aglais io an example of a butterfly from the family Nymphalidae - by Gillian Elsom.
Often seen in shady wooded areas and more frequently at higher altitudes. Having said this some CBC members have sent photographs of this species nectaring on Buddliea davidii in their gardens.