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Bosara longipecten sp. n.  

Bosara longipecten
(x 1.16)

7-8mm. The facies is similar to that of the previous two species but the postmedials are virtually uniangular (centrally) on the forewing though still biangular on the hindwing. They are much more punctate, with dark brown streaks on the veins, and the forewing antemedial is similarly punctate. The valve of the male genitalia has no saccular projection, unlike in modesta and the previous two species, but the saccular margin is stepped at about the centre, the distal part of the valve being much narrower and tapering further distally. The female has a short, broad, ductus, scobinate near the ostium, with a constriction between it and the asymmetrically pyriform bursa that it joins subbasally. The bursa is sparsely spined over the basal third and has a longitudinal comb of over 20 blade-like spines running from the edge of the basal spining round to the extremity of the bursa.

Holotype . SABAH: Mt Kinabalu, Power Station, 1930m, vii-ix.1965. Cambridge Expedition to Mt Kinabalu 1965 (H.J. Banks, H.S. Barlow & J.D. Holloway) BM geometrid slide 19003.

Paratypes: 1 (slide 9087) SABAH: Mt Kinabalu, Radio Sabah, 2600m, general data as holotype; 1 (slide 19010) SARAWAK: Gunung Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Site 3, January, Camp 4, Mulu 1780m. 453463.

Taxonomic note. A species with similar female genitalia (shorter spines in the bursa comb) but more strongly marked, greyer facies occurs in Seram (slide 12668).

Geographical range. Borneo.

Habitat preference. This species occurs at generally higher altitudes than the two preceding, from 1500m to 2600m, particularly at 2110m on G. Kinabalu.

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