18-19mm. The wings are a dull medium greyish brown, much more uniform than in medialis, with fine dark crenulate postmedials typical of the genus. These postmedials are obscurely paler, clouded by darker ground colour basad, irregular as is typical for the genus. The posterior of the medial zone of the forewing and an extensive part of the basal area of the hindwing (which lacks conspicuous fasciation) bears a dense pilosity. The male forewing has a flap along the underside of the costa. The genitalia have the uncus slightly sinuous and the valves narrowly triangular, the right one somewhat broader, curving in apically to a narrow but blunt apex. There are no marginal angles or processes, but there is a conspicuous triangular lacuna basally where the inner surface of the valve is lacking. The aedeagus vesica is similarly scobinate to that of the previous two species.
Holotype. SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 10, February, Camp 1, Mulu, 160m. 386470, mixed dipt. for.; BM noctuid slide 10796.
Paratype. SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 24, April, W. Melinau Gorge, 270m, 430658, FEG 4, limestone forest.
Geographical range. Borneo, Sumatra, Peninsular Malaysia.
Habitat preference. This would appear to be a species of lowland forest, though the specimen from Peninsular Malaysia was taken at 1000m.
