Rectiostoma silvibasis is a moth in the family Depressariidae.

The forewings are blackish brown, the basal third white tinged faintly with yellow on the costal edge.

There are a few blackish-brown scales on the extreme edge of the costa and anal angle.

The apical two thirds of the forewing are suffused with bronze-to-violet iridescent scales.

The hindwings are blackish brown with a white patch on the basal half of the anterior margin.