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Graptasura trilacunata sp. n.

Graptasura trilacunata
(x 1.38)

11-12mm. Both this and the next species have narrower, more triangular hindwings with more extensive black borders than polygrapha. The anteriors of the double fasciae of the forewing are more obscured with black suffusion, and the submarginal zone, rather than having a row of sagittate marks just distal to the double postmedial, has this zone more obscured, but with conspicuous patches of pure yellow ground colour. In trilacunata there are three of these, the one at the tornus being diagnostic. The round discal patch is similarly [?] more conspicuous, and the triangular patch posterior to it. In the male genitalia the anellar structure has five to six enlarged setae on each side, compared with the one or two in polygrapha.

Holotype . SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 23, April, W. Melinau Gorge, 250m. 430558, FEG 4, limestone forest, BM arctiid slide 5024.

Paratypes:1 as holotype; 2 BRUNEI: 30-60m, Labi, lowland forest and secondary veg., 6 Feb and 28.8.1979 (Lt. Col. M.G. Allen).

Geographical range. Borneo.

Habitat preference. This is a rare lowland forest species.

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