Cotana rubrescens is a moth in the Eupterotidae family. It was described by Walker in 1865. It is found in New Guinea. The wingspan is about 72 mm. Both wings are red-brown, the forewings with an ochreous pear-shaped spot at the end of the cell and a broad, slightly curved, oblique postmedian band of darker red, as well as a subterminal deeply dentate ochreous line, from whence to the termen the colour is more solid, the rest of the wing is somewhat thinly scaled. The hindwings are exactly like the forewings, but without the cell-spot. The veins in both wings are somewhat ochreous.