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Gyrtona obliqualis sp. n.  
Nigramma sp.; Holloway, 1976: 20, fig. 131, Plate 7: 88.

Gyrtona obliqualis (holotype)

Gyrtona obliqualis

12-13mm. This species resembles proximalis (10-11mm) in forewing facies but is larger, with a straighter oblique margin to the pale basal zone. It is also variable, two of the more strikingly marked forms being illustrated in the Plate, and a more uniform one by Holloway (1976). The male genitalia resemble those of ferrimissalis Walker in the equality and parallel arrangement of the valves, but the harpe is larger, more expanded apically, and the uncus is deeper. In the female genitalia the lamella postvaginalis is distinctively finely scobinate, and the bursa is elongate, slightly curved, tapering smoothly towards the base; there is no signum but the scobination is coarsened slightly centrally.

Holotype SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site 3, January, Camp 4, Mulu, 1780m, 453463, [upper montane forest], BM noctuid slide 10646.

Paratypes. l . SABAH: Mt. Kinabalu, Kamborangoh, 2110m (Banks, Barlow & Holloway) vii-ix 1965; 1 as holotype but Site 1, Mulu, 1790m, 452463, BM noctuid slide 11499, 1 BRUNEI: 5520ft, Bukit Pagon, LP 308, upper montane forest 15-20.ii.1982, BM noctuid slide 11498.

Geographical range. Borneo.

Habitat preference. During the Mulu survey the species was taken infrequently in upper montane forest on G. Mulu. It occurs on G. Murud, Sarawak, as well as on Kinabalu and Bukit Pagon.

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