TRIBE ORTHOSTIXINI
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Naxa kerangatis sp. n.


Naxa kerangatis (paratype)


19-23mm, 25-26mm. Males and, to a lesser extent, females of kerangatis have deeper forewings than in guttulata, with the grey spots darker and generally less lanceolate. The species are most reliably distinguished by characters of the male genitalia: the costa of the valve in guttulata is more strongly angled, sclerotised, rugose centrally; the juxta is shorter, broader, less deeply bifurcate apically, with the right-hand prong longer rather than the left as in kerangatis and the type species, textilis.

Holotype . SARAWAK: Gunung Mulu Nat. Park, R.G.S Exped. 1977-8 (J.D. Holloway et al.) Site 20, Mar.-Apr., W. Melinau Gorge, 150m. 422577, FEG3 kerangas, MV-understorey, BM geometrid slide 10616.

Paratypes: 10 (slide 17077), 1 as holotype; 6 (slide 11676, venation), 3 general data as holotype but site 22 (kerangas); 2 Site 21 (bank at edge of kerangas); 4 (slide 17067), 3  Sintang, BORNEO, inland of Pontianak, 1910 (Dr Martin).

Geographical range. Borneo.

Habitat preference. The species favours lowland forest on acid soils, e.g. kerangas.

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