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Arguda rosemariae sp. n.

Arguda rosemariae (paratype)
(natural size)

21-23mm. Fresh specimens are a slightly violet red, though the violet tinge fades quickly. The fasciae are obscure and much less oblique than in other species, a character shared with the Sumatran viettei Lajonquière. The antemedial is irregular and the postmedial slightly crenulate. The hindwings are darker, more uniform, less speckly than the forewings. The male genitalia have the aedeagus with two ventral spurs as in decurtata and several massive patches of scobination on the vesica. The ventral processes of the cubile are fork-shaped, and the upper dorsolateral processes terminate in a complex disc with a serrate margin.

Holotype BRUNEI: Kilanas Stn. 24.8.76, MV light, (M. Taib). BM lasiocampid slide 1035.

Paratypes: 1as holotype but 24.12.1980 (Aslan), 1 BRUNEI: 300m, Ulu Temburong, rainforest, 10. 2.80 (Lt. Col. M.G. Allen).

Geographical range. Borneo, Sumatra.

Habitat preference. One specimen has been taken in lowland rainforest. The other two were taken at an agricultural station. A putative female (worn) was taken at 1618m on Bukit Retak; the related A. viettei from Sumatra is only known from above 1000m, so this Bornean female may be attributable to viettei.

The species is named for Mrs Rosemary Allen in recognition of her hospitality and high tolerance threshold for tropical lepidoptery.

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