Atheta (Acrotona) nitidaespinae, 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 (Acrotona) nitidaespinae nov.sp. ( Figs 10 and 86-88 )

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

D e s c r i p t i o n: Length 2-2.18 mm. Body shiny and black, elytra and pygidium brown, antennae black with the two basal antennomeres brown, legs yellow. Second antennomere shorter than the first, third as long as the second, fourth to tenth transverse. Eyes as long as the postocular region in dorsal view. Reticulation of the fore-body very superficial, that of the abdomen transverse and evanescent on the first to fourth free tergites, evident and transverse on the fifth. Puncturation of the head very close and very superficial. Granulation of the pronotum, elytra and abdomen fine and very superficial. Aedeagus: Figs 86-87 ; spermatheca: Fig. 88.

C o m p a r a t i v e n o t e s: In the form of the spermatheca and of the internal sclerotized pieces of the aedeagus the new species is comparable to the widespread A. vicaria KRAATZ, 1859 , which occurs from the Mascarenes to the Philippines. The new species differs from A. vicaria in the apical umbilicus of the distal bulb of the spermatheca, which is short and very wide, whereas it is narrow and long in A. vicaria , in the basal lamina of the internal sclerotized pieces of the aedeagus being narrow and short (very large and long in A. vicaria ) and in the bi-sinuate outline of the aedeagus, whereas it is curved in A. vicaria .

E t y m o l o g y: The name of the new species means "shiny thorns", alluding to the internal sclerotised pieces of the aedeagus.

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.