Kui Zhang, Jun Wang‡, Yihao Ge§, Qiong Zhou§Corresponding author: Kui Zhang ( zhangkui@mail.ihe.ac.cn ) Corresponding author: Qiong Zhou ( hainan@mail.hzau.edu.cn ) © Kui Zhang, Jun Wang, Yihao Ge, Qiong Zhou. This is an open access preprint distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Citation:
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The Gammarus zhouqiongi sp. nov. are described and illustrated from Xinjiang Uygur Autonomous Region, China. The new species is characterized by pereopods III-IV with long straight setae on posterior margins and inner ramus of uropod III 0.7 times as long as outer ramus. Detailed morphological comparisons with related species are discussed. The mitochondrial cytochrome c oxidase 1 (COI) sequence differs from the other Gammarus species in Xinjiang by 16.6%-32.4% in K2P distance. The mitochondrial (COI, 16S) and nuclear markers (28S, EF1α) show that the new species is an independent branch in the phylogenetic tree. A key to identify Gammarus species in the Xinjiang are also provided.