AdultThe Silver-bordered Fritillary is the only lesser fritillary with silver spots on the underside of the wings. The species often has melanic, aberrant individuals.
Immature StagesScudder (1889a) first described the immatures in detail. The egg is dull yellow and taller than it is broad; it has strong reticulation on the chorionic surface. The mature larva is dark brown/green with a pale, wide dorsal band. The body is covered with elaborately branched black tubercles. This is the general appearance of all Clossiana larvae, with some variation in colour pattern.
SubspeciesThe BC subspecies is the Dark-bordered Fritillary, C.s. atrocostalis (Huard, 1927) (TL: Chicoutimi, PQ). This is a widespread boreal forest subspecies.