Palpi short and porrect where the second joint is hairy. Antennae of male with cilia and bristles, the upper surface covered with rough scales. Fore wing broad. The costa much arched and a large smooth patch on the inner area of underside for the articulation of the hind wing. Vein 5 absent. Veins 7 to 9 stalked. Vein 11 anastomosing with vein 12. Hind wing of male with a costal fold, from which large scales projects. Vein 4 absent. In female, vein 3,4 and 6,7 stalked. vein 5 absent and vein 8 from middle of cell.