Diagnosis. The forewings are slightly deeper than in other species, a medium to pale brown, the hindwings tending to be uniform with this rather than paler, and therefore not so conspicuously fasciated. The forewing reniform is oblique, slightly sausage-shaped, the fine dark border having a paler centre; a very diffusely darker, transverse medial band passes through it. The postmedial has only a short straight, oblique section at the costa, and is evenly curved from this through the discal area. The male genitalia have a distinct costa to the valve, terminating in a robust subapical spur and there is a strong conical process at the base of the valve. The aedeagus vesica is globular with some small lobes opposite a zone with a field of large, rather blunt spines; it is generally scobinate elsewhere and lacks cornuti. The transtillar sclerite is present and is also scobinate. There is a comb of spines that increase slightly in size distad at the apex of the aedeagus. The female genitalia are characterised particularly by a pair of bristly square plates that flank the ostium.
Taxonomic note. A review of the synonymy and illustration of type material, with designation of lectotypes, was presented by Owada (1992), but this is partially modified in the discussion of several further Bornean species below.
Geographical range. Borneo, Indian Subregion, Taiwan, Ryukyu Is., Philippines.
Habitat preference. The original material was collected by A.R. Wallace in Sarawak, probably in the lowlands. A male has been taken at 600m in primary forest near Poring on the south eastern side of G. Kinabalu.
