Cotana aroa

Cotana aroa is a moth in the Eupterotidae family. It was described by Bethune-Baker in 1904. It is found in New Guinea.

The wingspan is about 71 mm. The forewings are chocolate-brown, with yellow nervures and a large yellow patch in the basal ont-third of the wing below the cell. There is a postmedian band of intranervular coalescent golden-yellow patches, the upper four wedge-shaped, the lower four arrowhead-shaped, the points of all truncated. The hindwings are the same ground-colour, but with only six patches in the postmedian band, all of which are arrowhead-shaped, the lower three only having their points truncated.