TRIBE LITHOSIINI
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Mithuna quadriplagoides sp. n.


Mithuna quadriplagoides (paratype)
(x 1.30)


, 10-11mm. The facies is very similar to that of quadriplaga, with two irregular, oblique brown fasciae crossing the pinkish fawn forewing centrally and submarginally. The venation differs slightly in that R1 approaches Sc but does not anastomose with it for part of its length. The male genitalia are distinguished by the entirety of the valve with the saccular process fused to the dorsal part, the unique furca-like structure associated with the juxta, and the fine scobination, rather than distinct cornuti, on the vesica. The saccus is similarly oblong to that of quadriplaga, and the uncus is more acute, set on a less expansive tegumen.

Holotype . SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 1, January, Camp 4, Mulu, 1790m. 452463, [upper] montane forest, BM arctiid slide 4708.

Paratypes: 21 examples with general data as holotype, Sites 1, 2 and 4.

Geographical range. Borneo.

Habitat preference. The species has been taken in upper montane forest (approx. 1500-2000m) on G. Kinabalu, Bukit Pagon and G. Mulu, being abundant on the last.

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