TRIBE BOLETOBIINI
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Diomea hirdi sp. n. 
14-15mm. The wings are shades of dark, rich brown, but their shape and detail of the paler fasciation, particularly that of the submarginal, are as in diffusifascia. The double medial of the forewing is present but less prominent and more irregular. The male genitalia of the two species appear to be identical. The differences are therefore solely in the general colour of the wings (brown versus vinous black) and the absence in the new species of a white patch on the forewing. Females are unknown unless specimens in the molybdopasta series referred to diffusifascia that are more uniform, lacking the strong double medial fasciation of the forewing (slides 18542, 18561) are referable. No genitalia differences were detected.


Diomea hirdi
(Java)


Holotype
. Dutch West BORNEO: 85 miles above Pontianak (Simons & Neligan (Sanggan) (Sanggan)), ex Jansson, April 1909, BM noctuid slide 18538.

Paratypes: 1 as holotype; 1 Penungah [SABAH], 11.12.[18]93; 1 (slide 18540) SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway et al.), Site 16, March, Long Pala (Base), 70m, 324450, alluv./second. for.; 1 SARAWAK as above but Site 23, April, W. Melinau Gorge, 250m. 430558, FEG 4, limestone forest.

Geographical range. Borneo, Java, Thailand (VK).

Habitat preference. All material is from the lowlands, the two specimens from recent surveys being from alluvial forest and forest on limestone.

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