Strabocephalium borneorum, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 746

Strabocephalium borneorum nov.sp. ( Figs 26 and 125-127 )

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

D e s c r i p t i o n: Length 5.4-5.9 mm. Body shiny, reddish; head, antennae and legs 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. Head, pronotum and abdomen devoid of reticulation, that of the elytra evident, forming an irregular polygonal mesh. Puncturation of the head very superficial and very close, absent on the longitudinal median band. Puncturation of the pronotum invisible except for a few punctures on each side of the median line. Granulation of the elytra evident and not very close. Free abdominal tergites bare, posterior ¾ of the male fifth free tergite strongly punctate, the posterior margin of the male fifth tergite with six tubercles. Aedeagus: Fig. 126 ; spermatheca: Fig. 125 ; female sixth free tergite: Fig. 127.

C o m p a r a t i v e n o t e s The new species is very similar to S. mirabile BERNHAUER, 1911 from Borneo. It differs in the eyes being as long as the postocular region, whereas in S. mirabile the eyes are shorter than the postocular region. The posterior margin of the female sixth free abdominal tergite is plurilobate in the new species, whereas is serrate in S. mirabile ( Fig. 124 ). The distal bulb of the spermatheca is transverse in the new species ( Fig. 125 ), and spherical in S. mirabile ( Fig. 123 ). The proximal bulb of the spermatheca of the new species is sub-spherical, whereas it is pearshaped in S. mirabile .

E t y m o l o g y: The new species is dedicated to the inhabitants of Borneo.

Figures

Figs 25-33: Habitus. (25): Tetrabothrus femoralis nov.sp., scale bar 5.9 mm; (26): Strabocephalium borneorum nov.sp., scale bar 5.9 mm; (27): Keratodegnathus rougemonti nov.sp. male, scale bar 5.9 mm; (28): Keratodegnathus rougemonti nov.sp. female, scale bar 5.5 mm; (29): Keratodegnathus mirabilis nov.sp., scale bar 3.3 mm; (30): Myrmecopella borneensis nov.sp., scale bar 3.4 mm; (31): Orphnebius acutus nov.sp., scale bar 3.6 mm; (32): Orphnebius ocularis nov.sp., scale bar 2.7 mm; (33): Orphnebius acutissimus nov.sp., scale bar 3.6 mm.

Figs 117-125: Abdominal segment IX of female, labium with labial palpus, maxilla with maxillary palpus, aedeagus in lateral and ventral view, spermatheca and sixth free urotergum of female. (117- 119): Rougemontius borneensis nov.sp.; (120-122): Tetrabothrus femoralis nov.sp.; (123-124): Strabocephalium mirabile BERNHAUER; (125): Strabocephalium borneorum nov.sp. Scale bars: 0.1 mm. Scale bars: 0.1 mm.

Figs 126-134: Aedeagus in lateral and ventral view, sixth free urotergum of male, spermatheca, head in lateral view, labium with labial palpus, maxilla with maxillary palpus, mentum. (126-127): Strabocephalium borneorum nov.sp.; (128-134): Keratodegnathus rougemonti nov.gen., nov.sp. Scale bars: 0.1 mm.