AdultThe Mountain Fritillary is easily recognized by the small size of the butterfly and the angled margin of the hindwings.
Immature StagesUndescribed for North America.
SubspeciesThe BC subspecies is the Alaskan Fritillary, B.n. alaskensis (Holland, 1900) (TL: Forty-Mile/Mission Creeks, AK). This subspecies ranges throughout all of Alaska except the northeast coast, central and southern YT, northern BC, and the Wilmore Wilderness Park area of AB.