Mourning cloak 5.0-6.0 cm
Mourning cloak from Bragg Creek, Alberta, Canada
Alberta populations are primarily referable to subspecies hyperborea. On a global scale it is the most visually distinct cloak taxon due to its reddish dorsal colour.
Hyperborea may be better treated as a species distinct from antiopa on the basis of genetic, structural and colour differences plus lack of any known intergradation with Asian populations.