TRIBE ARCTORNITHINI n.
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Arctornis liguluncus sp. n.


Arctornis liguluncus (holotype)


17mm. This is a satiny white species like a small perfecta, though with a minute black discal dot on the forewing as in submarginata. The frons has a pinkish rufous square below the antennae much as in galene, but with a faintly paler centre and a slight tooth at the centre of its ventral margin extending into the white. The palps are a strong rufous yellow externally, and the legs are spotted as in the prasioneura group. However, the male genitalia have a large, tongue-like uncus as in submarginata, relatively longer and more parallel-sided than in the prasioneura group. The valves are relatively short, the distal margin oblique, the harpe increasingly, but still gently downcurved to the apex where, dorsally, there is a small triangular flange.

Holotype. SARAWAK: Gunung Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site 25, April, G. Api, 900m, 427550, lower montane forest, BM lymantriid slide 1599.

Geographical range. Borneo.

Habitat preference. The only specimen is from lower montane forest on limestone.

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