Mesomegaskela 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 : 740

Mesomegaskela rougemonti nov.sp. ( Figs 17 and 101-103 )

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

D e s c r i p t i o n: Length 5-5.2 mm. Body shiny, reddish, head and elytra brown, antennae reddish-brown, legs reddish. The whole body covered in very superficial short and adherent, silky pubescence. Posterior margin of the elytra with eleven long bristles. Abdomen without reticulation and with fine and very superficial Puncturation. Posterior margin of each of the four basal free tergites with ten long bristles. Aedeagus: Figs 101- 102 ; spermatheca: Fig. 103.

C o m p a r a t i v e n o t e s: In its habitus and the form of the spermatheca, the new species is similar to M. adesi PACE, 1999 from Hong Kong. It differs in the pronotum which has a length/width ratio of 0.85, in M. adesi 0.87, and above all in the form of the spermatheca. Whereas in M. adesi the proximal portion of the spermatheca is wound in four coils, in the new species the coils are more numerous ( Fig. 103 ), and more convoluted.

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 13-24: Habitus. (13): Pelioptera plenitudinis nov.sp., scale bar 2.1 mm; (14): Pelioptera irregularis nov.sp., scale bar 3 mm; (15): Dikraspedella borneensis nov.sp., scale bar 2.5 mm; (16): Doryloxenus borneensis nov.sp., scale bar 1.5 mm; (17): Mesomegaskela rougemonti nov.sp., scale bar 5.3 mm; (18): Chaetosogonocephus nobilis nov.sp., scale bar 3 mm; (19): Chaetosogonocephus minor nov.sp., scale bar 1.9 mm; (20): Chaetosogonocephus ruficollis nov.sp., scale bar 3.6 mm; (21): Chaetosogonocephus danumensis nov.sp., scale bar 2.3 mm; (22): Chaetosogonocephus luteicollis nov.sp., scale bar 1.9 mm; (23): Malayloeblius borneensis nov.sp., scale bar 2.5 mm; (24): Rougemontius borneensis nov.sp., scale bar 3 mm.

Figs 101-116: Aedeagus in lateral and ventral view and spermatheca. (101-103): Mesomegaskela rougemonti nov.sp.; (104-105): Chaetosogonocephus nobilis nov.sp.; (106-107): Chaetosogonocephus minor nov.sp.; (108): Chaetosogonocephus ruficollis nov.sp.; (109-111): Chaetosogonocephus danumensis nov.sp.; (112-113): Chaetosogonocephus luteicollis nov.sp.; (114-116): Malayloeblius borneensis nov.sp. Scale bars: 0.1 mm.