Proboscis fully developed. First segment of palpus with a fringe of scales; second segment long, upturned and smoothly scaled. Front rough, with a flattened or somewhat truncated prominence. Genae quadrate ventrally. Male antennae ciliated, scaled above. Fore tibiae with or without claws ; mid and hind tibiae with some fringing scales; mid tibiae of male swollen and enclosing a tuft of long sex scales. Metathorax with slight, depressed tuft. Abdomen smoothly scaled. Venation : fore wing with veins 3, 4 and 5 close together at lower angle of cell, 6 from upper angle, 7 connate from end of areole with 8+9 which are long-stalked (three-fifths distance from areole to margin), 10 from areole, 11 from cell; hind wing with veins 3 and 4 usually connate, 5 arising near 4 and rapidly diverging, 6 and 7 connate from upper angle, 8 touching cell at point only.