Nymphalis vaualbum

Nymphalis vaualbum, also written Nymphalis l-album and known as the Compton tortoiseshell or false comma, is a butterfly in the family Nymphalidae. Its name is contested: the description that covers vaualbum gave neither a full description nor a type specimen, so the name can be treated as a nomen nudum, which gives the alternative name l-album priority. The upper side of the wings is orange-brown with darker wing bases and black patches and a single white costal spot on each wing, while the underside is mottled grey and brown. A V-shaped white mark on the hindwing underside, stronger in males, is shared with the comma butterfly, which explains the common name false comma. It lives in deciduous and coniferous forest across the Northern Hemisphere, from central Asia and the Palearctic to Alaska, Canada and the northern United States. Females lay eggs in clumps on host plants such as poplar, willow and birch, and there is one brood a year.