Tribasodites uenoi, Yin & Nomura & Li, 2015

Yin, Zi-Wei, Nomura, Shûhei & Li, Li-Zhen, 2015, Ten new species of cavernicolous Tribasodites from China and Thailand, and a list of East Asian cave-inhabiting Pselaphinae (Coleoptera: Staphylinidae), Acta Entomologica Musei Nationalis Pragae 55 (1), pp. 105-127 : 118-120

Tribasodites uenoi sp. nov.

( Figs 9 , 12S–U, 13A)

Type locality. China, Guangxi, Tongle Zhen, Danzhan Tun, Jiafu Cun, Guanhan Dong.

Type material. HOLOTYPE: J, ‘ Guanhan Dong, Danzhan Tun, Jiafu Cun , Tongle Zhen , Leye Xian , [Guangxi, China] / {locality repeated in Chinese character} 6.x.2004, S. Uéno leg.’ (NSMT) . PARATYPES: 1 J 6 ♀♀, same label data as holotype (NSMT) ; 1♀, ‘ Shan’yang Dong , 560 m, Youli , Yongping Xiang , Leye Xian, [Guangxi, CHINA] / {locality repeated in Chinese character} 7.x.2004, S. Sone leg.’ (NSMT) .

Diagnosis. Male: vertex simple, lacking modification; antennomeres VIII–XI modified; each eye composed of about 8 facets; pronotum lacking lateral spines; metaventrite raised above metacoxae to form humps, with short row of dense setae on each hump; aedeagus with apical portion of the median lobe split to two parts, dorsal part longer than ventral part. Female: Each eye with about 6 facets; may be identified by the association with male.

Description. Male. Body ( Fig. 9A ) reddish brown, mouth parts, antennae and tarsi paler; BL 2.70–2.90 mm. HL 0.55–0.57 mm, HW 0.52–0.54 mm; median longitudinal carina thin, extending from base to level of eyes; each eye composed of about 8 facets; antennomeres VIII–IX modified ( Fig. 9B ). Pronotum slightly longer than wide, PL 0.62–0.65 mm, PW 0.58–0.59 mm; lacking discal and lateral spines. Elytra slightly wider than long, EL 0.79–0.82 mm, EW 0.83–0.88 mm; discal striae extending to more than half elytral length. Metaventrite ( Fig. 9C ) slightly raised above metacoxae, with pair of short rows of dense setae; metacoxae and metatrochanters simple. Abdomen narrower than elytra, AL 0.74–0.86 mm, AW 0.76–0.83 mm. Aedeagus ( Figs 9D, E ) asymmetric, length 0.78 mm.

Female. Similar to male in general; each eye with about 6 facets; antennae and metaventrite simple. Tergite VIII (Fig. 12S) and sternite VIII (Fig. 12T) transverse; width of genital complex excluding lateral arms (Fig. 12U) 0.14 mm. Measurements: BL 2.77–2.78 mm; HL 0.58–0.59 mm, HW 0.56–0.58 mm, PL 0.62–0.63 mm, PW 0.58–0.60 mm, EL 0.76–0.78 mm, EW 0.86–0.87 mm, AL 0.77–0.82 mm, AW 0.81–0.82 mm.

Etymology. The new species is named after S. Uéno, collector of the holotype and most of the paratypes.

Distribution. South China: Guangxi ( Fig. 13A ).

Figures

Fig. 9. Tribasodites uenoi sp. nov., male. A – habitus. B – left antenna. C – meso- and metaventrite. D – aedeagus, in lateral view. E – aedeagus, in ventral view. Scales: A = 1.0 mm; C = 0.5 mm; B, D, E = 0.2 mm.

Fig. 13. Distribution of the Tribasodites bedosae species-group in China (A) and Thailand (B).