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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.
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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