Caridina sinanensis, a new species of stygobiotic atyid shrimp (Decapoda, Caridea, Atyidae) from a karst cave in the Guizhou Province, southwestern China

Da-Jian Xu; Deng-Xu Li; Xiao-Zhuang Zheng; Zhao-Liang Guo

doi:10.3897/zookeys.1008.54190

Caridina sinanensis, a new species of stygobiotic atyid shrimp (Decapoda, Caridea, Atyidae) from a karst cave in the Guizhou Province, southwestern China

Zookeys. 2020 Dec 30:1008:17-35. doi: 10.3897/zookeys.1008.54190. eCollection 2020.

Authors

Da-Jian Xu^{1

2}, Deng-Xu Li¹, Xiao-Zhuang Zheng³, Zhao-Liang Guo³

Affiliations

¹ College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, Hunan Province, China Hunan Agricultural University Changsha China.
² Changsha Agricultural Comprehensive Administrative Law Enforcement Bureau, Changsha 410013, Hunan Province,China Changsha Agricultural Comprehensive Administrative Law Enforcement Bureau Changsha China.
³ Department of Animal Science, School of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong Province, China Foshan University Foshan China.

Abstract

From a biodiversity survey of a subterranean habitat near Sinan County, Guizhou Province, southwestern China, a new atyid shrimp of the genus Caridina H. Milne Edwards, 1837, C. sinanensis sp. nov. was discovered. The new species can be separated from other congeners based on a combination of characters including depigmentation in body and reduction of eyes, small pigment spot at the centre of the cornea, the shape of rostrum and the endopod of the 1^st male pleopod, and the relatively longer appendix interna on the appendix masculina of the 2^nd pleopod. Mitochondrial COI and 16S rRNA gene sequences also support the establishment of the new species. Information on the habitat, and the levels of threat are discussed to guide the conservation of C. sinanensis sp. nov.

Keywords: Caridina; COI and 16S rRNA; freshwater biodiversity; karst landform; southwestern China; spelaeology; taxonomy.

Da-Jian Xu, Deng-Xu Li, Xiao-Zhuang Zheng, Zhao-Liang Guo.