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Dinumma spiculata sp. n.

Dinumma spiculata
Dinumma spiculata

, 12-13mm. This is a smaller species than those of the placens complex, but the facies of the males and the sparse ciliation of their antennae are similar. However, there is a more conspicuous pale zone crossed by darker veins on the male hindwing, and in both sexes the discal spot is not apparent within the dark medial band of the forewing. The females are paler, and browner, the dark medial band more conspicuous. They could be confused with paler specimens of the next species, but the pale fasciae distal to the medial band are more delicate, with the more ventral distinctly longer, incurved. The aedeagus vesica has two diverticula that are longer, and each bears at its apex between one and three spines (always the same number on each in the three males dissected). The female genitalia have the ductus and bursa relatively small, and the ostium is underlapped by the slightly bilobed apex of the seventh sternite, though still asociated with an extension from the eighth segment.

Holotype . BRUNEI: 3m, Seria, secondary and coastal veg., 16.2.80 (Lt. Col. M.G. Allen), BM noctuid slide 18993.

Paratypes: 1 (slide 18812) BRUNEI: 15m, Daerah Belait, Badas, swamp forest, 27 Feb. 82 (Lt. Col. M.G. Allen); 1 (slide 18994) Mt. Marapok, Dent Province, Brit. N. BORNEO; 1 (slide 18992) Bidi, SARAWAK, 1907-1908 (C.J. Brooks); 2 (slide 18810) SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway et al.), Site 14, February, Camp 2.5, Mulu, 1000m. 413461, lower montane forest; 1 (slide 18811) SARAWAK as previous but Site 8, February, Camp 1, Mulu, 150m, 385470, mixed dipt. for.; 1 INDONESIA: Borneo, Kalimantan Tengah, Barito Ulu 2001 at Busang (slide 18983) Rekut River Junction, 0°03' S, 113° 59' E, 23.viii.2001 (G. Martin).

Geographical range. Borneo.

Habitat preference. Material is mostly from the lowlands, taken in a variety of forested and disturbed habitats. Two specimens are from lower montane forest.

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