9mm. The facies resembles that of griseisigna except the forewing is an even paler grey, with the discal markings much less prominent, almost vestigial. The most distal of the costal triangular marks is strongly developed. The distal margin of the forewing is more angled centrally than in griseisigna. The hindwings are as dark as in griseisigna, with a prominent white bar at the tornus. The male genitalia have features in common with the next two species such as a slender uncus and elongate valves with setose lobes. In this species the valves are narrow, but expand to two-thirds, then taper away to the apex. There is a semicircular setose lobe at one-third centrally and a setose ridge submarginally, ventrally, at two-thirds. There is no subapical process on the ventral margin as seen in signicosta Walker.
Holotype. SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 8, February, Camp 1, Mulu, 150m, 385470, mixed dipt. for., BM noctuid slide 19996.
Geographical range. Borneo.
Habitat preference. The only specimen is from lowland dipterocarp forest.
