Atheta (Poromicrodota) borneotibialis, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 736

Atheta (Poromicrodota) borneotibialis nov.sp. ( Figs 11 and 89 )

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 2.42 mm. Body shiny, reddish-brown with fourth free abdominal tergite brown, antennae brown with the two basal antennomeres reddishbrown, yellow legs. Second antennomere shorter than the first, third as long as the second, fourth to seventh longer that wide, eighth and ninth as long as wide, tenth transverse. Eyes longer than the postocular region in dorsal view. Head and pronotum devoid of reticulation, that of the elytra superficial, that of the abdomen very transverse. Granulation of head and pronotum fine, very superficial, that of the elytra very superficial and evident, that of the abdomen fine and very superficial. Spermatheca: Fig. 89.

C o m p a r a t i v e n o t e s: For the form of the spermatheca the new species is similar to A. subaegra CAMERON, 1939 from India of which I have examined the female holotype labelled "Haldwani Dist., Kumaon, D.G. Champion, Atheta suabegra CAM., Type" (MHNL). The new species differs from it by the median and posterior tibiae which each bear two long bristles, which are absent in A. subaegra , in the short apical umbilicus of the distal bulb of the spermatheca, which is deep in A. subaegra , and in its smaller size: length, 0.25 mm; in A. subaegra 0.39 mm.

E t y m o l o g y: The name of the new species means "Borneo tibial" alluding to the middle and posterior tibiae with long bristles.

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.