Miscellaneous Genera V.
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“Hyposemansis” volvapex Kobes 
Hyposemansis volvapex Kobes, 1994, Heterocera Sumatrana 7: 267.


“Hyposemansis” volvapex

Diagnosis. This is a small, ochreous fawn species with the forewing slightly mottled with darker brown and with a scattering of transverse striae of the same colour. On the underside, the hindwings have more striae than the relatively uniform forewings. The dark brown labial palps are strongly upcurved, laterally flattened.

Taxonomic note. The facies and wing shape are completely different from those of singha. Kobes, in his original description, related the species to Hyposemansis through features of the head, thorax and abdomen, none of which is exclusive to the genus. The resting posture with wings held erect like a butterfly is shared, but the apex of the forewing is uniquely folded over in volvapex (illustrated by Kobes). The lower clypeofrons is unscaled. The male abdomen has the eighth segment of the framed corematous type. The tergite is relatively broad, the sternite twice as broad with a reduced anterior lacuna and a strongly bilobed posterior margin. The genitalia have an aedeagus similar to that of singha, but the vinculum is broader, without a saccus. The valves are more membranous, flimsy, enclosing a mass of scales in a fold along their length and having a hair pencil basally; they lack the setae of singha.

Geographical range. Sumatra, Borneo, Bali, N.E. Himalaya (Khasia Hills).

Habitat preference. Only four specimens have been collected in Borneo, all from lowland dipterocarp forest: from 30-60m at Labi and Ulu Belait and from 300m at Ulu Temburong in Brunei; from 500m on G. Mulu.

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