Drusilla sabahensis, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 756-757

Drusilla sabahensis nov.sp. ( Figs 44 and 181-182 )

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 3.93 mm. Body shiny, blackish-brown, antennae brown with the two basal antennomeres and the base of third yellowish-red, legs yellowish-red, the femora yellow with distal extremity brown. Second antennomere shorter than the first, third longer than the second, fourth to seventh longer than wide, eighth as long as wide, ninth and tenth transverse. Eyes very large, in dorsal view. Fore-body devoid of reticulation, that of the abdomen very transverse and superficial, but the male sixth free tergite with slightly transverse and evident reticulation. Puncturation of the head superficial and absent on the longitudinal median band. Puncturation of pronotum and elytra strong and very superficial. There is a transverse sulcus between the antennae. Pronotum with a deep median sulcus ending posteriorly in a deep dimple. Aedeagus: Figs 181-182. C o m p a r a t i v e n o t e s : In the form of the aedeagus and in the habitus the new species is similar to D. foeda PACE, 2008 also from Borneo, but the middle and posterior femora are clearly bicoloured, the intermediary antennomeres are longer than wide (transverse in D. foeda ), and the apex of the aedeagus in ventral view is abruptly dilated, (not dilated in D. foeda ).

E t y m o l o g y: The new species takes its name from Sabah.

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 181-194: Aedeagus in lateral and ventral view, spermatheca, sixth free urotergum of male. (181-182): Drusilla sabahensis nov.sp.; (183): Drusilla profunda nov.sp.; (184): Drusilla borneoclara nov.sp.; (185-188): Drusilla rougemontiana nov.sp.; (189-191): Drusilla danumensis nov.sp.; (192-194): Drusilla borneoapicalis nov.sp. Scale bars: 0.1 mm.