SUBFAMILY CAREINI
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Didigua nigridorsum sp. n.

 


Didigua nigridorsum ♂
(paratype)


♂ 13mm. This species is very close to effusa and martini, and is distinguished only by characteristics of the male. The hindwing is excavated in a similar manner to that of martini, but with the anterior angle of the excavation less produced. The dorsal zone is folded under to enclose a large, blackish brush of hair-scales, observed from the dorsal surface as a somewhat darkened ridge. The male genitalia are very similar to those of martini except in the aedeagus vesica where the most basal two spines are set on a lobe near the central one, rather than on the main tube halfway between the central spine and the base of the vesica.

Holotype ♂. BRUNEI: 300m, Ulu Temburong, rainforest, 10.2.80 (Lt. Col. M.G. Allen), BM noctuid slide 16776.

Paratypes: 1♂ BRUNEI: 30-60m, Labi, lowland forest and secondary veg., 12.1.80 (Lt. Col. M.G. Allen); 1♂ BRUNEI: 15m, Labi Road at Kpg Ratan, secondary veg., 28.8.79 (Lt. Col. M.G. Allen); 1♂ Dutch West BORNEO: 85 miles above Pontianak (Simons et Meligan (Sanggan)) ex Janson, April 1909; 1♂ MALAYSIA: Sabah, Danum Valley, 170m, 4�58�N, 117�48�E (S.J. Willott) 2� understorey, Bukit Atur Rd., DVFC, 3.ix.93.

Geographical range. Borneo.

Habitat preference. This is a rare lowland forest species that can persist in secondary forest.

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