Arctornis malleuncus Holloway sp. n.
♂♂ 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.
Genitalia:
