Orphnebius concavus, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 750

Orphnebius concavus nov.sp. ( Figs 34 and 146-147 )

T y p e m a t e r i a l Holotype, Sabah, Danum Valley , B.R.L., f.i.t, 14-16.II.2007, G. de Rougemont leg. ( CROU).

D e s c r i p t i o n: Length 3.48 mm. Body shiny, reddish, posterior ¼ of the elytra brown, antennae brown with the three basal antennomeres and apex of the eleventh yellowish-red, legs yellowish-red. Second antennomere shorter than the first, third longer than the second, fourth and fifth as long as wide, seventh to tenth transverse. Eyes very large. Body devoid of reticulation. Head impunctate, devoid of granulation. Puncturation of the pronotum evident and sparse, with two large anterior punctures. Granulation of the elytra clearly visible, fairly dense. Free abdominal tergites convex and bare. Male sixth free tergite with a semicircular median fold. Aedeagus: Figs 146-147.

C o m p a r a t i v e n o t e s: The aedeagus of this new species bears two lateral lamina between which the surface is concave. A similar aedeagus has never been observed before.

E t y m o l o g y: The name of the new species refers to the ventral concavity of the aedeagus.

Figures

Figs 34-45: Habitus. (34): Orphnebius concavus nov.sp., scale bar 3.4 mm; (35): Orphnebius parabigladiosus nov.sp., scale bar 3.9 mm; (36): Lambanus borneensis nov.sp., scale bar 6 mm; (37): Lambanus rougemonti nov.sp., scale bar 7.1 mm; (38): Drusilla divergens nov.sp., scale bar 7.1 mm; (39): Drusilla bulbosa nov.sp., scale bar 4.6 mm; (40): Drusilla serrulae nov.sp., scale bar 4.6 mm; (41): Drusilla borneoacuta nov.sp., scale bar 6.9 mm; (42): Drusilla caputserpentis nov.sp., scale bar 7.1 mm; (43): Drusilla bilobata nov.sp., scale bar 5 mm; (44): Drusilla sabahensis nov.sp., scale bar 3.9 mm; (45): Drusilla profunda nov.sp., scale bar 3.9 mm.

Figs 146-156: Aedeagus in lateral and ventral view, maxilla with maxillary palpus, sixth free urotergum of male, abdominal segment IX of male or female, labium with labial palpus, mentum. (146-147): Orphnebius concavus nov.sp.; (148-149): Orphnebius parabigladiosus nov.sp.; (150- 156): Lambanus borneensis nov.gen., nov.sp. Scale bars: 0.1 mm.