Batraxis nanlingensis, Wang, Dan & Yin, Zi-Wei, 2016

Wang, Dan & Yin, Zi-Wei, 2016, New species and records of Batraxis Reitter (Coleoptera: Staphylinidae: Pselaphinae) in continental China, Zootaxa 4147 (4), pp. 443-465 : 452

Batraxis nanlingensis , new species

( Figs 5 A, 12A–C, 14R, 15)

Type material (1 Ƌ, 6 ♀♀). Holotype: CHINA: Ƌ, labeled ‘ CHINA: Guangdong Province, Ruyuan Hsien (乳源 县), Nanling N.R. (南岭自然保护区), Disilindao (第四林道), 24°55'47"N, 112°59'50"E, mixed forest, leaf litter, wood, sifted, 1500 m, 05.v.2015, Peng, Tu & Zhou leg.’ ( SNUC) . Paratypes: CHINA: 3 ♀♀, same label data as holotype ( SNUC) ; 1 ♀, labeled ‘ CHINA: Guangdong Province, Ruyuan Hsien, Nanling N.R., Walkway (步行道), 24°55'57"N, 113°00'18"E, mixed forest, leaf litter, wood, sifted, 1220 m, 28.iv.2015, Peng, Tu & Zhou leg.’ ( SNUC) ; 1 ♀, labeled ‘ CHINA: Hunan, Chenzhou (郴州), Yizhang Hsien (宜章县), Mangshan N.R. (莽山自然保 护区), 24°56'26"N, 112°59'18"E, mixed forest, leaf litter, wood, sifted & beating, 1400 m, 26.iv.2015, Peng, Tu & Zhou leg.’ ( SNUC) .

Description. Male. Body dark-brown, with sparse, minute pubescence in most areas. Head rectangular, vertex moderately convex, with pair of distinct vertexal foveae; antennal tubercles low; frons flattened, subantennal transverse sulcus complete, with shallow vertexal sulcus merging with subantennal transverse sulcus and connecting foveae; each eye composed of about 30 facets; antennae relatively thin, antennomeres III‒VIII elongate, IX as long as wide, X transverse, XI largest, widest at middle; median gular carina shallow, with two separated nude foveae. Pronotum with indistinct median antebasal fovea and complete basal impression. Each elytron with two shallow foveae at base. Protrochanters protuberant at ventral margin ( Fig. 14 R). Abdomen slightly narrowed at base; tergite IV (first visible tergite) with narrow basal sulcus; discal carinae relatively long, close, extending to apical one-third of tergal length; short marginal carinae extending to one-seventh of tergal length. Aedeagus ( Fig. 12 A–C) 0.27 mm in length, relatively stout, parameres distinctly exceeding apex of median lobe, rounded apically, each with two long apical setae; endophallus symmetric, comprised with three sclerites, with lateral two widely separated at base, and numerous weakly-sclerotized setae-like structures.

Female ( Fig. 5 A). Similar to male in general appearance; protrochanters simple; each eye composed of about 30 facets. Measurements: BL 1.71–1.79 mm; HL 0.40–0.42 mm; HW 0.38–0.42 mm; PL 0.29–0.33 mm; PW 0.37– 0.39 mm; EL 0.55–0.57 mm; EW 0.64–0.69 mm; AL 0.47–0.48 mm; AW 0.6 2– 0.64 mm; width between discal carinae of tergite IV 0.16–0.18 mm at apices.

Comparative notes. See that under B. gloriosa sp. n.

Distribution. China: Guangdong ( Fig. 15 ).

Etymology. The specific epithet is taken after the type locality, i.e. Nanling Nature Reserve.

Figures

FIGURE 5. Dorsal habitus of Batraxis species. A. B. nanlingensis (female). B. B. yifan (male). Scale bars: 0.5 mm.

FIGURE 12. Aedeagi of Batraxis species. (A, B, D, E, G, H. in ventral view. C, F, I. in lateral view). A – C. B. nanlingensis. D – F. B. yifan. G – I. B. ziyueae. Scale bars: 0.1 mm.

FIGURE 14. Legs of male Batraxis species. (A – F. Protibia. G. Mesotibia. H, I. Profemur. J – V. Protrochanter). A, K. B. gloriosa, population from Fujian. B, L. B. gloriosa, population from Zhejiang. C, H, P. B. gesar. D, T. B. ziyueae. E, U. B. bicolor, population from Yunnan. F, I, V. B. tibialis, population from Jiangxi. G, S. B. yifan. J. B. gloriosa, population from Hunan. M. B. gloriosa, population from Jiangxi. N. B. gloriosa, population from Guangxi. O. B. longicornis. Q. B. longithorax. R. B. nanlingensis. Scale bars: A ‒ I = 0.1 mm; J ‒ V = 0.05 mm.

FIGURE 15. Distribution of Batraxis species in China.