Dikraspedella borneensis, Pace, 2014

Pace, R., 2014, Aleocharinae from Sabah (Borneo) collected by Guillaume de Rougemont (Coleoptera, Staphylinidae), Linzer biologische Beiträge 46 (1), pp. 727-794 : 739

Dikraspedella borneensis nov.sp. ( Figs 15 and 95-97 )

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: 4 and 3, same provenance as the holotype (CROU, MSNV).

N o t e: The ligula of the new species is furnished with two bristles at the base of apical lobes. This was not observed when I described the genus Dikraspedella PACE, 2002 ; the two bristles were perhaps detached and lost in the process of preparation and attaching the label to the specimen.

D e s c r i p t i o n: Length 1.96-3.48 mm. Body shiny and blackish-brown, free abdominal tergites one and two yellowish-brown, antennae brown with the two basal antennomeres yellowish-brown, legs yellowish-red. Second antennomere shorter than the first, third as long as the second, fourth to tenth strongly transverse. Eyes as long as the postocular region in dorsal view. Reticulation of head and pronotum very superficial, that of the elytra strong, that of the abdomen irregular, polygonal, evident. Puncturation of the head fairly deep and absent on the mid-longitudinal band, that of the pronotum of the male dense and evident on either side of the ample discal concavity, the fundus of which is impunctate, that of the elytra very close and superficial. Granulation of the abdomen salient only near the posterior margin of each free tergite. Pronotum of the male with ample discal concavity, absent in the female. The disc of the pronotum bears f disposed in a square in both sexes. Each elytron with four strong punctures, two in a longitudinal line near the suture and two in a longitudinal line near the sides. Tibiae externally spinose. Aedeagus: Figs 95-96 ; spermatheca: Fig. 97.

C o m p a r a t i v e n o t e s: In the form of the spermatheca, the new species is similar to D. kinabaluensis PACE, 2002 , also from Borneo but the apical umbilicus of the distal bulb of the spermatheca is narrow in the new species, wide in D. kinabaluensis . The spermatheca of the new species is 0.23 mm long, whereas that of D. kinabaluensis measures 0.57 mm. The aedeagus of the new species is 0.32 mm long, that of D. kinabaluensis 0.27 mm.

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

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 90-100: Aedeagus in lateral and ventral view, sixth free urotergum of male and spermatheca. (90-92): Pelioptera danumensis nov.sp.; (93): Pelioptera plenitudinis nov.sp.; (94): Pelioptera irregularis nov.sp.; (95-97: Dikraspedella borneensis nov.sp.; (98-100): Doryloxenus borneensis nov.sp. Scale bars: 0.1 mm.