Duomitus is a genus of moths in the Cossidae family. Palpi are minute. Antennae of male with proximal half bi-pectinated, the distal half is simple, wholly simple in female. Legs without spurs. Wings are long and narrow. Fore wing with very large areole. Vein 11 given off from 10. Hind wing with no bar between veins 7 and 8, veins 4 and 5 given off separately. The fork of the veinlets in the cell of both wings are broad.