Morpho catenarius is a Neotropical butterfly belonging to the subfamily Morphinae of the family Nymphalidae.

The translucent surfaces of the wings vary from a pale blue color to almost white.

The edges of the wings show a series of black spots, while the hindwings are crossed by several small "eyes".

Larvae feed on Scutia buxifolia (Rhamnaceae) and other plant species in the families Erythroxylaceae, Leguminosae, Sapindaceae and Euphorbiaceae.

This species is found in Brazil (Minas Gerais, São Paulo).