Drusilla bilobata, 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

Drusilla bilobata nov.sp. ( Figs 43 and 179-180 )

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 5 mm. Body shiny, brown, pronotum reddish, abdomen yellowish-red with the fourth and fifth free abdominal tergites reddish, antennae brown with the two basal antennomeres and the base of third yellowish-red, legs yellowish-red. Second antennomere shorter than the first, third longer than the second, fourth as long as wide, fifth to tenth transverse. Eyes longer than the postocular region in dorsal view. Reticulation of head and pronotum evident, that of the elytra superficial, that of the abdomen very transverse and clearly visible. Puncturation of the fore-body fine, very superficial and evident, that of the abdomen fine and superficial. The median sulcus of the pronotum does not reach the anterior margin and posteriorly it ends in a deep median dimple. Spermatheca: Fig. 179 ; female sixth free tergite: Fig. 180.

C o m p a r a t i v e n o t e s: The habitus of the new species is similar to that of D. spissatheca PACE, 2008 also from Borneo, but the maximum width of the distal bulb of the spermatheca of the new species is greater (0.06 mm), than in spissatheca (0.048 mm).

E t y m o l o g y: The name of the new species "two lobed" refers to the two large lobes of the sixth free abdominal tergite of the female.

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 169-180: Aedeagus in lateral and ventral view, sixth free urotergum of male (171, 176) and female (172, 180), spermatheca and abdomen. (169-173): Drusilla serrulae nov.sp.; (174-177): Drusilla borneoacuta nov.sp.; (178): Drusilla caputserpentis nov.sp.; (179-180): Drusilla bilobata nov.sp. Scale bars: 0.1 mm.