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Diplurodes triangulata sp. n

Diplurodes triangulata

12-14mm. The wings are uniform brown as in the previous two species, but the postmedial fasciae are only weakly angled. The hindwing medial is black, prominent. In the male abdomen there are massive coremata between segments 3 and 4. There is no tongue-like process from the tegumen nor a rod-like extension to the juxta, which is broader than in other species. The vinculum is only weakly angled. The gnathus is typical of Diplurodes, however. The sacculus is weakly sclerotised, giving rise to a narrow triangular process directed towards the valve costa.

Holotype . SARAWAK: Gunung Mulu Nat. Park, R.G.S Exped. 1977-8 (J.D. Holloway et al.) Site 28, Nr. Long Pala, FEG 1a. 328428, 50m. Alluvial forest, BM geometrid slide 10444.

Paratypes:3 4 SARAWAK as holotype but sites 8, 11, 13, 15, 16; 3 1 BRUNEI: 15m. Telisai, sandy heath forest and Gymnostoma, dates in 1979 (Lt. Col. M.G. Allen); 1 1 (slide 16356) BRUNEI: 3m, Seria, secondary and coastal veg. 6.1979 (Lt. Col. M.G. Allen): 1 BRUNEI: 5m. Telisai, heath forest - mangrove, April 1981 (Allen & Harman) BM geometrid slide 13183.

Geographical range. Borneo, Peninsular Malaysia, Sumatra (Sato slide RS-1835).

Habitat preference. Records are from a range of lowland forest types, including dry heath forest; one specimen was taken in lower montane forest at 1000m.

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