Gyrophaena osferox, 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

Gyrophaena osferox nov.sp. ( Figs 3 and 73-76 )

T y p e m a t e r i a l: Holotype, Sabah, Sepilok, F.R., leaf litter, 13.II.2007, G. de Rougemont leg. (CROU). Paratypes: 2 and 2 same provenance as the holotype (CROU, MSNV).

D e s c r i p t i o n: Length 1.12-1.2 mm. Body shiny, yellowish-brown, elytra brown, antennae dirty yellow, legs yellow. Second antennomere shorter than the first, third shorter than the second, antennomeres four to ten transverse. Eyes longer than the postocular region in dorsal view. Head and pronotum devoid of reticulation. Reticulation of the elytra evident and slightly transverse, that of the abdomen also evident and irregular polygonal. Puncturation of the head very superficial, except for two strong median posterior punctures located on a transverse line. Puncturation of the pronotum very superficial and evident, distributed as in figure 75. Granulation of the elytra fine, very superficial and close, that of the abdomen salient only near the posterior margin of each tergite. Male fifth free tergite with a posterior median flattened U-shaped fold. Aedeagus: Fig. 73 ; spermatheca: Fig. 74 ; pronotum: Fig. 75 ; sixth free male abdominal tergite: Fig. 76.

C o m p a r a t i v e n o t e s: The shapes of the aedeagus and of the male sixth free abdominal tergite of the new species show some similarities to those of G. benevola PACE, 2001 also from Borneo. The new species is clearly distinguished by having the apex of the aedeagus, in lateral view, wide (narrow in G. benevola ). The median lobe of the male sixth free abdominal tergite is ampler in the new species than in G. benevola .

E t y m o l o g y: The profile of the aedeagus, in lateral view, is shaped like the head of dragon with a fierce mouth. The name of the new species means "fierce mouth" from the Latin os = mouth and ferox = fierce.

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 65-76: Aedeagus in lateral and ventral view, spermatheca, sixth free urotergum of male, and pronotum. (65-68): Gyrophaena manus nov.sp.; (69-72): Gyrophaena gigaedeagica nov.sp.; (73- 76): Gyrophaena osferox nov.sp. Scale bars: 0.1 mm.