Borneochara, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 768-769

Borneochara nov.gen. ( Figs 64 and 239-243 )

D i a g n o s i s This new genus is near the genus Ystrixoxygymna PACE, 1999 from China, in its navicular body devoid of reticulation, the tarsal formula, the 4-segmented labial palpi and 5-segmented maxillary palpi. It differs from Ystrixoxygymna in that the antennae are not clavate, in the non prominent paraglossae, the wide mentum which is not regularly curved to the anterior margin, and the sparse long bristles on the sides of the body.

D e s c r i p t i o n: This genus at first sight appears to belong to the genus Ystrixoxygymna PACE, 1999 from China, but the antennae are not clavate ( Fig. 64 ), and the mentum is long ( Fig. 243 ). Head transversely sub-orbicular, narrower than the thorax, the neck stout and concealed by the pronotum, the eyes large, much longer than the postocular region but not prominent; temples not bordered below. Antennae with the 1 st joint rather long, clavate, the distal half excavated for the reception of the 2 nd joint. Mandibles rather stout, pointed, edentate. Outer lobe of maxilla broader than the inner, densely ciliate on the truncate apical margin ( Fig. 242 ); inner lobe narrow, pointed, very closely furnished with long slender spines along the distal half of the inner margin. Maxillary palpi rather long, the 1 st joint very small, 2 nd elongate, lightly curved, and slightly thickened towards the apex, 3 rd a little longer but thicker at the apex than the preceding, 4 th narrower and nearly half as long, 5 th narrower, much shorter and conical. Labial palpi rather long, 1 st joint cylindrical, 2 nd narrower and a little shorter, 3 rd narrower and shorter than the preceding, 4 th short and conical ( Fig. 241 ). Tongue rectangular, as long as the 1st joint of the labial palpi, its apex split to the middle. Paraglossae not strongly developed, extending to the level of the base of the tongue. Thorax transverse, not narrowed behind. Elytra with long lateral bristles. Abdomen narrowed posteriorly, the first three visible tergites not transversely impressed at their bases. Mesosternum simple, its process broad, extending but little between the coxae, truncate; metasternal process long, broad, and parallel, extending between the coxae, truncate, coxae widely separated. Legs moderate, the entire tibia with short setae. Tarsal formula: 5-5-5; the metatarsi with the 1 st joint almost as long as the following two together.

T y p u s g e n e r i s Borneochara rougemonti nov.sp.

E t y m o l o g y: The feminine name of the new genus mean "she that is set in Borneo" from the ancient Greek χαίρειν = he is set.

Figures

Figs 58-64: Habitus. (58): Mimacrotona borneensis nov.sp., scale bar 1.5 mm; (59): Apimela perarmata nov.sp., scale bar 2.1 mm; (60): Pseudoplandria fortis nov.sp., scale bar 5.9 mm; (61): Pseudoplandria confundibilis nov.sp., scale bar 2.8 mm; (62): Pseudoplandria collaris nov.sp., scale bar 3.3 mm; (63): Aleochara (Aleochara) sabahensis nov.sp., scale bar 9 mm; (64): Borneochara rougemonti nov.sp., scale bar 1.8 mm.

Figs 230-243: Spermatheca, aedeagus in lateral and ventral view, labium with labial palpus, maxilla with maxillary palpus, mentum. (230): Apimela perarmata nov.sp.; (231-232): Pseudoplandria fortis nov.sp.; (233-235): Pseudoplandria confundibilis nov.sp.; (236): Pseudoplandria collaris nov.sp.; (237-238): Aleochara (Aleochara) sabahensis nov.sp.; (239-243): Borneochara rougemonti nov.gen., nov.sp. Scale bars: 0.1 mm.