Pseudatheta rougemonti, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 733

Pseudatheta rougemonti nov.sp. ( Figs 7 and 80-81 )

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 1.66 mm. body shiny, brown, elytra blackish-brown with base yellow, abdomen blackish-brown with the two basal free tergites, base of the third and pygidium yellow; antennae brown with the two basal antennomeres yellow, apex of the eleventh dirty yellow, legs yellow. Second antennomere as long as the first, third shorter than the second, fourth as long as wide, fifth to tenth antennomeres transverse. Eyes a little longer than the postocular region in dorsal view. Reticulation of the head superficial, that of the pronotum absent, that of the elytra slightly evident, that of the abdomen evident and irregularly polygonal. Puncturation of the head very superficial and clear. Granulation of the pronotum dense and fine, that of the elytra very superficial, also fine, that of the abdomen superficial, except near the posterior margin of all free tergites on which the granules are salient. Male fifth free abdominal tergite elongate with dense granules. Aedeagus: Figs 80-81.

C o m p a r a t i v e n o t e s: In the presence of an acute ventral lamina of the aedeagus, the new species is similar to both P. borneensis PACE, 2007 and to P. kinabaluensis PACE, 2007 , both from Borneo. The new species is distinct from P. borneensis in the strongly transverse intermediary antennomeres, which are only slightly transverse in P. borneensis , in the aedeagus, which is smaller and devoid of an apical flagellum (apical flagellum present in P. borneensis ) and in the rectilinear ventral appendix of the aedeagus, which is sinuate in P. borneensis . The new species is distinguished from P. kinabaluensis by its brown abdomen with yellowish-red pygidium, (abdomen uniformly dirty yellow in P. kinabaluensis ), and by the rectilinear ventral appendix of the aedeagus, which is curved in P. kinabaluensis .

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 1-12: Habitus. (1): Gyrophaena manus nov.sp., scale bar 2 mm; (2): Gyrophaena gigaedeagica nov.sp., scale bar 1.6 mm; (3): Gyrophaena osferox nov.sp., scale bar 1.1 mm; (4): Brachida danumensis nov.sp., scale bar 1.8 mm; (5): Aisthentusa flagellifera nov.sp., scale bar 1 mm; (6): Psephothetemusa rougemonti nov.sp., scale bar 1.6 mm; (7): Pseudatheta rougemonti nov.sp., scale bar 1.6 mm; (8): Demerinda sabahensis nov.sp., scale bar 2.5 mm; (9): Outachyusa borneensis nov.sp., scale bar 2.4 mm; (10): Atheta (Acrotona) nitidaespinae nov.sp., scale bar 2.2 mm; (11): Atheta (Poromicrodota) borneotibialis nov.sp., scale bar 2.4 mm; (12): Pelioptera danumensis nov.sp., scale bar 2.5 mm.

Figs 77-89: Spermatheca and aedeagus in lateral and ventral view. (77): Brachida danumensis nov.sp.; (78): Aisthentusa flagellifera nov.sp.; (79): Psephothetemusa rougemonti nov.sp.; (80-81): Pseudatheta rougemonti nov.sp.; (82-84); Demerinda sabahensis nov.sp.; (85): Outachyusa borneensis nov.sp.; (86-88): Atheta (Acrotona) nitidaespinae nov.sp.; (89): Atheta (Poromicrodota) borneotibialis nov.sp. Scale bars: 0.1 mm.