Memphis perenna is a species of leafwing found in South America.
Memphis perenna is a butterfly with forewings with a humped costal edge, concave outer edge, hooked inner angle and concave inner edge. Each hindwing bears a tail. The east upper side of the forewings is navy blue with a submarginal line of large metallic blue spots, the upper side of the hindwings is brown with a submarginal line of small metallic blue spots. The reverse side is brown with metallic reflections and simulates a dead leaf. Seitz -differs from all the species of this group by the blue marginal marking of the hindwings.
It is also present in Mexico and Salvador.