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Oxaenanus parvikalialis sp. n.


Oxaenanus parvikalialis
Figure 160

16mm. The species is smaller than kalialis but with similar uniform black facies. The second and third segments of the male labial palps are gently sinuous, curving up over the head, and gently down on the thorax to the abdomen, whereas in kalialis the combination is obtusely angled upwards just in front of the head, the components on each side of the angle being straight. The palps are paler in parvikalialis and enclose straw-coloured hair-scales. The male genitalia have the valves tongue-like over the dorsal part, rather than narrow, tapering as in brontesalis, and with the saccular apex produced in a smaller tongue-like process separated from the main part by an excavation of similar shape. The aedeagus vesica is broad, with some convolution, but no scobination.

Taxonomic note. An externally similar male specimen from Sumatra (slide 20021) has a more acute apex and a shorter saccular process on the ventral margin of the valve, and the aedeagus vesica is scobinate. It represents a further species in the genus.

Holotype . BORNEO: Sabah, Bukit Monkobo, 5° (176) 48' N, 116° (176) 58' E, 24.viii.1987, 1775m (A.H. Kirk-Spriggs), summit upp. montane forest, BM noctuid slide 19506.

Geographical range. Borneo.

Habitat preference. The only specimen is from upper montane forest.

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