Englmaier Gernot K, Rodríguez Nuria Viñuela, Waidbacher Herwig, Palandačić Anja, Tesfaye Genanaw, Gessl Wolfgang, Meulenbroek Paul
University of Graz, Institute of Biology, Universitätsplatz 2, A-8010 Graz, Austria University of Graz Graz Austria.
Department of Ecology, Faculty of Science, Charles University, Viničná 7, CZ-12844 Prague 2, Czech Republic Charles University Prague Czech Republic.
Zookeys. 2020 Nov 4;984:133-163. doi: 10.3897/zookeys.984.55982. eCollection 2020.
On the African continent, the genus consists of several species often insufficiently separated from each other by diagnostic characters. Herein, a detailed morphological redescription of from the Awash River drainage is presented, together with additional data on the type specimens of and . Mitochondrial CO1 sequence data are also provided, including the historic paralectotype of , with a comparison to species from Africa and the Middle East. Based on these sequences, clusters outside the group of African congeners and is a sister lineage to species from the south-east of the Arabian Peninsula. Although morphologically variable, is characterised by having a single unbranched pectoral-fin ray, a short distance between vent and anal-fin origin (7.3-19.7 % of pelvic - anal distance), chest and belly covered with scales, and a prominent axillary scale at base of pelvic fin (18.8-35.5 % of pelvic-fin length).
在非洲大陆,该属包含几个物种,其诊断特征往往不足以将它们彼此区分开来。在此,本文对阿瓦什河流域的该物种进行了详细的形态学重新描述,并提供了关于该物种及其他相关物种模式标本的补充数据。还提供了线粒体细胞色素氧化酶亚基1(CO1)序列数据,包括该物种的历史副选模式标本,并与来自非洲和中东的该属物种进行了比较。基于这些序列,该物种聚集在非洲同属物种群之外,是阿拉伯半岛东南部物种的姐妹谱系。尽管该物种在形态上存在变异,但其特征是具有一根不分枝的胸鳍鳍条、肛门与臀鳍起点之间的距离较短(占腹鳍至臀鳍距离的7.3 - 19.7%)、胸部和腹部覆盖有鳞片,以及在腹鳍基部有一个明显的腋鳞(占腹鳍长度的18.8 - 35.5%)。