Rectiostoma chrysabasis is a moth in the family Depressariidae.

The forewings are concolorous with the thorax and tegulae basally, extending to the midpoint.

The distal margin is irregularly concave bordered by a broad, transverse band of iridescent blue violet.

The apical portion of the forewing is dark brown, irregularly patterned with iridescent blue violet.

The hindwings are dark brown apically and white basally.