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Euphalacra lacunata sp. n.

Euphalacra lacunata

14mm. The hindwing postmedial is straight as in semisecta, but otherwise the species is distinctive, with an excavate hindwing apex and a generally rather reticulated rich dark brown pattern with an oblique, straight postmedial on the forewing that has a large, rather elongate translucent patch just distal to it opposite the more posterior half of the margin as illustrated. The male genitalia have socii and gnathus as in nigridorsoides, but the aedeagus lacks apical processes though has scobination in the vesica. The valves are somewhat deeper. The eighth sternite bears a pair of widely spaced spines on its distal margin.

Holotype . SARAWAK: Gunung Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site 20, Mar.-Apr., West Melinau Gorge, 150m. 422577, FEG 3, kerangas, BM drepanid slide 2090.

Paratypes: 1 as holotype; 1BRUNEI: Rampayoh, 200m 2.iii. 1982 (T.W. Harman).

Geographical range. Borneo, Peninsular Malaysia (FRIM colln).

Habitat preference. Two specimens are from wet heath (kerangas) forest on a river terrace and one from an area of lowland forest.

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