Memphis moruus is a species of leafwing found in South America.
Memphis moruus has forewings with a pointed apex and a concave outer edge, and hindwings with a tail. The upper part is metallic blue with a lighter basal part and a darker navy blue to brown distal part. The underside is light brown and simulates a dead leaf.
The host plants of its caterpillar are Nectandra (Lauraceae) for Memphis moruus boisduvali.