Miscellaneous Genera VI
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Eubryopterella triangulata sp. n.
17-19mm. The facies is a much more brownish grey, without the bluish tinge of vaneeckei and cinerea. The fasciation is more obscure on the forewing except for the very irregular, fine, dark postmedial and antemedial fasciae within a paler medial zone; these are close together over the dorsal half but diverge anteriorly to flank on each side a conspicuous but diffusely bordered dark brown triangle on the costa. There is a punctate pale submarginal on both fore- and hindwings. The male genitalia have a more bulbous uncus than cinerea, and the saccular and costal lobes are narrower and barely detached from the rest of the valve. The costal one is basal to the saccular one rather than distal to it.


Eubryopterella triangulata

Holotype . BRUNEI: 30-60m, Labi, lowland forest and secondary veg., 6 Feb '79 (Lt. Col. M.G. Allen).

Paratypes: 2 as holotype but different dates; 1 BRUNEI: 60m, Ulu Belait, lowland forest, 23.1.79 (Lt. Col. M.G. Allen); 3 (slide 18175) BRUNEI: 3m, Seria, secondary and coastal veg., various dates (Lt. Col. M.G. Allen); 2 BRUNEI: 15m, Telisai, sandy heath forest and Gymnostoma, 3.2.1979 (Lt. Col. M.G. Allen); 1 BRUNEI: Anduki, 7.1.1980 (R. Fairclough); 1 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.; 1 BORNEO: Sabah, Danum Valley, 5° 01' N, 147° 47' E, 20.x.1987, 100m (A.H. Kirk-Spriggs), primary forest edge.

Geographical range. Borneo, Sumatra (HS / ZSM), Thailand (VK).

Habitat preference. Commoner than cinerea, triangulata has only been taken in the lowlands in areas of primary and secondary dipterocarp forest, heath forest and coastal associations.

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