Corgatha marshallae Holloway sp. n.

♂ 8mm. The facies is of a similar pattern to that of the previous three species, but the wings are a darker reddish brown, and the forewing costa and the area between the antennae are pale grey. The costal band is thickest centrally, where it is crossed by dark bars that mark the anterior ends of the antemedial and postmedial fasciae; there is a lunulate black discal mark between these fasciae. The postmedials of all wings are punctate black and white as in brumasa and faircloughi. The distal margins are edged finely with white, banded by fine black lunules basad that are indented into the spaces, where they meet those on each side. The male genitalia have an uncus shorter and more robust than in faircloughi, but the costal processes of the valves are similar. However, the saccular processes are shorter and semicircular, and the saccus is apically acute.