Rectiostoma xuthobasis is a moth in the family Depressariidae.

The distal margin of the yellow area is bordered by a dark brown line immediately paralleled by a broad, transverse band of iridescent blue violet.

The apical half of the forewing is dark brown suffused with iridescent copper scales irregularly patterned with iridescent blue-violet scales.

The hindwings are dark brown with a white patch on the anterior margin and white and brown hair-pencils in the anal area.

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