Drusilla divergens, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 753-754

Drusilla divergens nov.sp. ( Figs 38 and 162-163 )

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). Paratypes: 2, same provenance as the holotype (CROU, MSNV).

D e s c r i p t i o n: Length 7-7.12 mm. Body shiny, blackish-brown, abdomen reddish, posterior half of the male fourth free abdominal tergite and the whole fourth brown, antennae reddish, legs yellowish-red. Second antennomere shorter than the first, third longer than the second, fourth to tenth longer than wide. Eyes longer than the postocular region in dorsal view. Reticulation of the fore-body evident and fine. Reticulation of the abdomen absent. Puncturation of the head visible, but absent on a narrow longitudinal median band and on frons. Puncturation of the elytra evident and close, that of the abdomen fine. Aedeagus: Figs 162-163.

C o m p a r a t i v e n o t e s:Thenewspeciesissimilarto D. foeda PACE, 2008 also from Borneo. It differs in the lenghth/width ratio of the pronotum which is 0.93, whereas in D. foeda it is 1.11, in the antennomeres four to eight which are longer than wide, whereas in D. foeda they are transverse, and in the broad, truncate apex of the aedeagus, which in D. foeda is acute.

E t y m o l o g y: The specific epithet of the new species refers from the divergence of the characters of the aedeagus from those of D. foeda PACE.

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 157-168: spermatheca, sixth free urotergum of female (158) and male (167), aedeagus in lateral and ventral view. (157-158): Lambanus rougemonti nov.gen., nov.sp.; (159-160): Drusilla sculpticollis PACE; (161): Drusilla bruneiorum PACE; (162-163): Drusilla divergens nov.sp.; (164- 168): Drusilla bulbosa nov.sp. Scale bars: 0.1 mm.