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Arctornis malleuncus sp.
n.
Arctornis malleuncus 
(holotype) |
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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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