Lethata ruba is a moth in the family Depressariidae.

The forewings are deep yellow ochreous with the costa narrowly brick red.

A broad band of pink extends parallel to the costa from the base to the apex, blending into the ground color at the apical third.

The hindwings are whitish ochreous, lightly shaded with grey.

This article on a moth of the family Depressariidae is a stub.