来自中国西北部吐鲁番盆地的一种新沙蛇（蛇目：游蛇科）。

A new species of Psammophis (Serpentes: Psammophiidae) from the Turpan Basin in northwest China.

作者信息

Chen Minli, Liu Jinlong, Cai B O, Li Jun, Wu N A, Guo Xianguang

机构信息

Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China University of Chinese Academy of Sciences, Beijing 100049, China.

Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.

出版信息

Zootaxa. 2021 May 19;4974(1):116134. doi: 10.11646/zootaxa.4974.1.4.

DOI:10.11646/zootaxa.4974.1.4

PMID:34186867

Abstract

An adult sand snake specimen was collected during a herpetofaunal survey conducted in the Turpan Basin in northwest China. Phylogenetic analyses revealed that this specimen, along with other snake sloughs and skins collected from different localities in the Turpan Basin formed a clade that is sister to Psammophis lineolatus. This taxon exhibited substantial divergence from its congeners (P. lineolatus and P. condanarus) with uncorrelated p-distances ranging from 11.9 ± 0.9% to 15.8 ± 1.6% for the ND4 gene and from 10.2 ± 0.8% to 13.8 ± 1.1% for the Cytb gene. Given the genetic differences along with morphological differences, we describe the specimen from the Turpan Basin as Psammophis turpanensis sp. nov. We provide detailed morphological descriptions, and compare this specimen with five Asian sand snakes and the Afro-Asian Sand Snake, P. schokari. In addition, we provide brief comments on the biogeography of Psammophis in China.

摘要

在中国西北部吐鲁番盆地进行的一次爬行动物调查中，采集到了一个成年沙蛇标本。系统发育分析表明，该标本与从吐鲁番盆地不同地点采集的其他蛇蜕和蛇皮形成了一个分支，该分支是细纹沙蛇（Psammophis lineolatus）的姐妹群。这个分类单元与其同属物种（细纹沙蛇和康氏沙蛇（P. condanarus））表现出显著差异，ND4基因的非相关p距离在11.9±0.9%至15.8±1.6%之间，细胞色素b（Cytb）基因的非相关p距离在10.2±0.8%至13.8±1.1%之间。鉴于其遗传差异以及形态差异，我们将来自吐鲁番盆地的标本描述为吐鲁番沙蛇（Psammophis turpanensis sp. nov.）。我们提供了详细的形态描述，并将该标本与五种亚洲沙蛇以及亚非沙蛇（P. schokari）进行了比较。此外，我们对中国沙蛇属的生物地理学进行了简要评论。