Protobathra binotata is a moth in the Autostichidae family. It was described by Bradley in 1961. It is found on Guadalcanal. The wingspan is 14-16 mm. The forewings are pale drab suffused with fuscous and with a heavy dark infuscation at the base and along the inner margin. There are two prominent fuscous-black stigmata, the first a little before the middle and slightly nearer the costa than the inner margin, the second beyond the middle at the end of the cell, slightly larger and midway between the costa and the inner margin. The hindwings are light grey, in females weakly suffused with fuscous towards the apex.