Drusilla caputserpentis, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 755-756

Drusilla caputserpentis nov.sp. ( Figs 42 and 178 )

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 7.12 mm. Pronotum and elytra opaque, rest of the body shiny. Head blackish-brown, pronotum and elytra brown, abdomen yellowish-red, posterior margin of the first to fourth free abdominal tergites brown, fifth free tergite reddishbrown, antennae blackish-brown with the two basal antennomeres reddish-brown and apex of the eleventh yellow, legs yellowish-red. Second antennomere shorter than the first, third longer than the second, fourth to tenth longer than wide. Eyes shorter than the postocular region in dorsal view. Reticulation of the fore-body evident, that of the abdomen very transverse and superficial. Puncturation of the head evident, fairly close and absent on a narrow longitudinal median band and on the frons, that of pronotum and elytra very dense and deep, that of the abdomen fine and fairly close. Pronotum with median sulcus at the bottom of an ample longitudinal concavity and with feeble lateral impressions. Spermatheca: Fig. 178.

C o m p a r a t i v e n o t e s: The spermatheca of the new species shares some of the characters of the spermatheca of D. perdensa PACE, 2004 from Thailand. Both have a triangular appendix on the distal bulb of the spermatheca, and the proximal portion of the spermatheca is folded. However the intermediary portion of the spermatheca of the new species is much dilated near the proximal bulb, which is not the case in D. perdensa . The apical umbilicus of the distal bulb of the spermatheca of the new species is narrow: 0.024 mm wide, whereas in D. perdensa it measures 0.036 mm.

E t y m o l o g y: The name of the new species, meaning "snake head" refers to the shape of the distal bulb of the spermatheca.

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.