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Ballatha willotti sp. n.


Ballatha willotti (holotype)

11mm. Both wings have rounded margins as distinct from the rather square forewing margin and almost tailed hindwing margin of the other species in the genus. The facies above is mainly grey, the hindwings darker than the forewings; the latter are yellow in the other species. The forewing grades paler to the apex, and there is a yellow triangle at the tornus and a smaller spot subbasally on the dorsum. The underside of both wings is dark grey, the forewing narrowly yellow over the distal and dorsal margins, and the hindwing with longitudinal zones of yellow. The abdomen is dark grey above, yellow below, and extends almost twice the length of the hindwing dorsum. The genitalia have a narrower, longer uncus than the type species but this is flanked by shallower lobes from the tegumen. The valves are more irregularly tapered apically, with the narrowing more abrupt. The bifurcate process of the valve is more robust, with denser rows of setae.

Holotype . MALAYSIA: Sabah, Danum Valley, 170m, 458N 11748E (S.J. Willott) 1 Canopy JC, Cpy Wkway BRL, 6.vii.95, BM noctuid slide 16841.

Geographical range. Borneo.

Habitat preference. The only specimen is from lowland dipterocarp forest.

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