Brachida danumensis, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 731-732

Brachida danumensis nov.sp. ( Figs 4 and 77 )

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 1.8 mm. Body shiny, yellowish-red, posterior half of the elytra brown, pygidium yellow, antennae brown with the two basal antennomeres and base of the third yellow. Second antennomere as long as the first, third shorter than the second, fourth to tenth transverse. Eyes longer than the postocular region in dorsal view. Body devoid of reticulation. Puncturation of the head very superficial and evident, absent on the mid-longitudinal median band. Puncturation of the pronotum obsolescent. Granulation of the elytra very superficial. Spermatheca: Fig. 77.

C o m p a r a t i v e n o t e s: In the shape of the spermatheca the new species is similar to B. crassiuscula ( KRAATZ, 1859) from Sri Lanka, of which I have examined 7 specimens of the type series labelled " Ceylon, J. Nietner, Homalota crassiuscula KRAATZ " (DEI). The new species can be distinguished from B. crassiuscula by the intermediary portion of the spermatheca, between the distal bulb and appendix of the proximal bulb, which is about as long as the maximum width of the distal bulb, whereas this intermediary portion of the spermatheca is absent in B. crassiuscula . B. subadunca PACE, 2002 from Borneo has the intermediary portion of the spermatheca shorter than the maximum width of the distal bulb of the spermatheca.

E t y m o l o g y: The new species takes its name from the Danum Valley.

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.