Batraxis bicolor 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 : 455-456

publication ID

https://doi.org/10.11646/zootaxa.4147.4.6

publication LSID

lsid:zoobank.org:pub:49EE6E10-C40B-4988-A086-CEE330544A0B

DOI

https://doi.org/10.5281/zenodo.6077887

persistent identifier

https://treatment.plazi.org/id/B60787DE-FF87-FFE4-FF39-D73FFC2D6266

treatment provided by

Plazi

scientific name

Batraxis bicolor Wang and Yin, 2016
status

 

Batraxis bicolor Wang and Yin, 2016  

( Figs 6 View FIGURE 6 B, 13A–C, 14E, 14U, 15)

Batraxis bicolor Wang and Yin (in Wang et al. 2016: 2)   .

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

Additional material examined (14 ƋƋ, 17 ♀♀). 1 Ƌ, labeled ‘ CHINA: Yunnan Province, Lincang City, Yun Hsien, Manwan , Town , Manjiu Village (慢旧村), 24°42'31''N, 100°22'44''E, rotten wood, alt. 1371 m, 9.iv.2016, Zi-Chun Xiong leg.’ ( SNUC) GoogleMaps   ; 5 ƋƋ, 3 ♀♀, labeled ‘ China: Yunnan, Lincang City, Yun Hsien, Manwan Town , Guiziba Village , 24°43'48"N, 100°20'01"E, rotten wood, alt. 1243 m, 19.iv.2016, Zi-Chun Xiong leg.’ ( SNUC) GoogleMaps   ; 8 ƋƋ, 14 ♀♀, same data as previous material except ‘ 20.iv.2016 ’ ( SNUC) GoogleMaps   .

Comments. The population of Batraxis bicolor   from Hainan has reddish brown head, pronotum, and elytra and a much darker abdomen (Wang et al. 2016) which is stable in all available individuals, while the population from Yunnan ( Fig. 6 View FIGURE 6 B) are uniform in color (darkish brown). Furthermore, the aedeagal endophallus of the population from Hainan is strictly symmetric, but in the population from Yunnan, it is slightly asymmetric ( Fig. 13 View FIGURE 13 A–C). The above differences are interpreted as intraspecific variation of this species. Otherwise, the long protuberance of the protrochanters ( Fig. 14 View FIGURE 14 U) and small preapical tooth of the protibiae ( Fig. 14 View FIGURE 14 E) are stable in both populations. Batraxis bicolor   is similar to B. splendida Nomura   from Japan and Korea, but the latter species lack a protuberance on the protibiae.

Measurements of the population from Yunnan: male—BL 2.00– 2.17 mm, HL 0.42–0.43 mm, HW 0.42–0.43 mm, PL 0.39–0.42 mm, PW 0.43–0.47 mm, EL 0.50–0.54 mm, EW 0.83–0.84 mm, AL 0.71–0.79 mm, AW 0.78– 0.85 mm, width between discal carinae of tergite IV 0.38–0.44 mm at apices, length of the aedeagus 0.49 mm; female—BL 1.83–2.05 mm; HL 0.38–0.40 mm; HW 0.39–0.40 mm; PL 0.35–0.39 mm; PW 0.42–0.44 mm; EL 0.45–0.49 mm; EW 0.74–0.81 mm; AL 0.65–0.77 mm; AW 0.74–0.82 mm; width between discal carinae of tergite IV 0.38–0.42 mm at apices.

Distribution. China: Yunnan (new provincial record), Hainan ( Fig. 15 View FIGURE 15 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Batraxis

Loc

Batraxis bicolor Wang and Yin, 2016

Wang, Dan & Yin, Zi-Wei 2016
2016
Loc

Batraxis bicolor

Wang and Yin (in Wang et al. 2016: 2
2016