Drusilla rougemontiana, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 758

Drusilla rougemontiana nov.sp. ( Figs 47 and 185-188 )

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: 14 exx., same provenance as the holotype (CROU, MSNV).

D e s c r i p t i o n: Length 4.3-4.54 mm. Body shiny, blackish-brown, abdomen yellowish-red with the free third to sixth free abdominal tergites brown, antennae blackish-brown with the two basal antennomeres and the base of third reddish-brown, legs yellow with knees yellowish-brown. Second antennomere shorter than the first, third longer than the second, fourth to tenth transverse. Eyes longer than the postocular region in dorsal view. Body devoid of reticulation except on the sixth free tergite on which it is very transverse and superficial. Puncturation of the head sparse and superficial, absent on a narrow longitudinal median band, that of the pronotum strong anteriorly, to the sides thin, that of the elytra very superficial and clear. Median sulcus of the pronotum superficial, ample median concavity of the pronotum limited posteriorly by a transverse edge and a triangular posterior median impression. Male fifth free abdominal tergites with six tubercles on the posterior margin and two anterior median tubercles. Aedeagus: Figs 186-187 ; spermatheca: Fig. 185 ; male sixth free tergite: Fig. 188.

C o m p a r a t i v e n o t e s: The habitus of this new species is similar to D. sculpticollis PACE, 2008 , but the aedeagus and the spermatheca are different. The apex of the aedeagus, in ventral view, is more constricted and longer than that of D. sculpticollis , and the proximal portion of the spermatheca of the new species is not wound in a coil as in D. sculpticollis .

E t y m o l o g y: The new species is dedicated to its collector, our colleague, the staphylinid specialist Guillaume de Rougemont.

Figures

Figs 46-57: Habitus. (46): Drusilla borneoclara nov.sp., scale bar 5.8 mm; (47): Drusilla rougemontiana nov.sp., scale bar 5.5 mm; (48): Drusilla danumensis nov.sp., scale bar 3.4 mm; (49): Drusilla borneoapicalis nov.sp., scale bar 4.6 mm; (50): Drusilla borneostricta nov.sp., scale bar 7.5 mm; (51): Drusilla sabahorum nov.sp., scale bar 5.3 mm; (52): Drusilla trina nov.sp., scale bar 8 mm; (53): Drusilla borneoruficollis nov.sp., scale bar 6.8 mm; (54): Zyras (Glossacantha) plenus nov.sp., scale bar 9 mm; (55): Porus laminarum nov.sp., scale bar 11.3 mm; (56): Porus borneensis nov.sp., scale bar 5.3 mm; (57): Wroughtonilla sabahensis nov.sp., scale bar 4.6 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.