Batraxis tibialis Wang and Yin, 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 : 462-463

Batraxis tibialis Wang and Yin, 2016

( Figs 7 , 13 D–F, 14F, 14I, 14V, 15)

Batraxis tibialis Wang and Yin (in Wang et al. 2016: 4) .

Type locality: China, Hainan, Qiongzhong Hsien, Limu Mt. , 19°10'04"N, 109°44'45"E, 625 m.

Additional material examined. 2 ƋƋ, labeled ‘ CHINA: W. Jiangxi, Ji’an City, Jinggang Shan (井冈山), Bijia Shan (笔架山), 26°31'03"N, 114°11'17"E, mixed leaf litter, sifted, 580 m, 24.vii.2014, Chen, Hu, Lv & Yu leg.’ ( SNUC).

Comments. The glabrous body ( Fig. 7 A), obliquely narrowed abdomen at base, distinctly concaved protibiae ( Fig. 14 F), presence of small ventral protuberance at the middle of profemora ( Fig. 14 I), and the form of aedeagus ( Figs 13 D–F) of the population from Jiangxi readily lead its identity to B. tibialis . The differences in the forms of the protibial cavity and aedeagal endophallus between the populations from Hainan ( Fig. 7 B) and Jiangxi is considered intraspecific variation of this species.

Measurements of the population from Jiangxi: BL 1.93 mm, HL 0.42 mm, HW 0.43 mm, PL 0.38 mm, PW 0.42 mm, EL 0.53 mm, EW 0.72 mm, AL 0.60 mm, AW 0.69 mm, mm, width between discal carinae of tergite IV 0.30 mm at apices, length of the aedeagus 0.24 mm.

Distribution. China: Jiangxi (new provincial record), Hainan ( Fig. 15 ).

Figures

FIGURE 7. Dorsal habitus of Batraxis tibialis. A. Population from Jiangxi. B. Population from Hainan. Scale bars: 0.5 mm.

FIGURE 13. Aedeagi of Batraxis species. (A, B, D, E. in ventral view. C, F. in lateral view). A – C. B. bicolor, population from Yunnan. D – F. B. tibialis, population from Jiangxi. 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.