View Image Gallery of Tribe Arctornithini n.

Arctornis malleuncus sp. n.

Arctornis malleuncus (holotype)

15mm. The forewings are satiny white without rippling. The bar to the frons and the palps are pale brown, the former with a strongly concave ventral boundary. The legs are rather damaged but do not appear to be strongly spotted. The male genitalia have a broad, rounded, slightly sclerotised uncus, though this is not as pronounced as in bilobuncus, and the head of the uncus is not bilobed but constricted subapically to give a slightly hammer-like effect. The valve is rectangular, the harpe, straight, slender, tapering to a point just beyond the valve margin, and is increasingly scobinate from half way onwards. The aedeagus has prominent lateral ‘horns’.

Holotype . SARAWAK: Gunung Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site 8, February, Camp 1, Mulu, 150m, 385470, mixed dipt. for., BM lymantriid slide 1621.

Paratype . BRUNEI, 300m, Ulu Temburong, rainforest, 30.6.1979 (Lt. Col. M.G. Allen) BM lymantriid slide 2161.

Geographical range. Borneo.

Habitat preference. Both specimens are from lowland dipterocarp forest.

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