15mm, 12-15mm. The male antennae are strongly noded, and the forewing subcostal flap extends just to the postmedial, its interior margin evenly and shallowly curved so that it tapers away at each end. The wings are a medium ochreous brown that grades darker at the submarginal to give a darker border to all the wings. The postmedials are irregularly curved, finely dentate, dark brown, and the forewing antemedial is similar but less finely dentate. There is a more diffuse and less strongly dentate dark medial basal to the fine, lunulate discal marks on each wing. This facies is most similar in the genus to that of P. fentoni, a smaller, more uniform brown species with less dentate fasciation and simply fasciculate antennae in the male. The male genitalia have the valves extending just beyond the apex of the tegumen. The slender, sinuous saccular processes extend almost to the valve apex, particularly the slightly larger one on the left. The aedeagus vesica has about four coarse teeth immediately opposite the junction with the aedeagus, with a scattering of smaller ones over the lobe extending from it towards the base of the aedeagus. The female has the bursa extensively and finely scobinate, this intensifying on one side towards the basal curvature of the ductus seminalis. There is a signum at two thirds, consisting of a small, slender spine.
Holotype. SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 13, February, Camp 2, Mulu, 500m, 401464, mixed dipt. for., BM noctuid slide 19633.
Paratypes: 1, 1 as holotype; 1 general data as holotype but Site 8, February, Camp 1, Mulu, 150m, 385470, mixed dipt. for.; 1 (slide 19645) general data as holotype but Site 11, February, Camp 1, Mulu, 150m. 385470, mixed dipt. for.; 1 genera data as holotype but Site 20, Mar.-Apr., W. Melinau Gorge, 150m. 422577, FEG 3, kerangas; 1 Dutch West BORNEO, 85 miles above Pontianak (Simons et Meligan (Sanggan)) ex Jansson, April 1909.
Geographical range. Borneo.
Habitat preference. All material is from lowland forest.
