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Nycteola pseudoindica sp. n.


Nycteola pseudoindica

8-9mm. The facies of the forewing is similar to that of indica, but there is an oblique grey shade from the apex of the costa grey triangle to the dorsum at one-quarter, where the grey darkens slightly. There is usually another similar dark grey patch centrally on the dorsum. The species is best distinguished from indica by the female genitalia, where there is a pad-like structure at the base of the ductus as in indica, but the ductus is much shorter and the bursa is pyriform without a pair of signa, but with a dense array of fine spines throughout. The male genitalia (Penang specimen) have the uncus narrower and longer. The valves are distinguished by distal and subbasal external lobes, and the apex of the saccular shield is expanded more widely than in indica.

Holotype . BRUNEI: 15m, Telisai, sandy heath forest and Gymnostoma, 3.2.1979 (Lt. Col. M.G. Allen), BM noctuid slide 17078.

Paratypes: 3 as holotype; 1 S.E. BORNEO (Doherty) May [18]91.

Taxonomic note. An externally similar, probably undescribed species occurs in Sri Lanka (slide 17121), New Guinea (Goodenough Is.; slides 17109, 17111) and Queensland (slide 17092); the male has an ovate uncus, different valve structure and a similarly broad but less anchor-like apex to the saccular shield, and the female has a nipple-like or conical lamella antevaginalis, no basal pad, and a sclerotised ductus that expands into a bursa that is narrowed or constricted distally and lacks signa or strong spining.

Geographical range. Borneo, Penang (slide 17107), Singapore (slide 17113), Java (slide 17091).

Habitat preference. All material is from the lowlands, mostly from dry heath forest where Gymnostoma (Casuarinaceae) is dominant.

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