Department of Marine Science and Fisheries, Sultan Qaboos University, Muscat, Oman. .
Ichthyology and Molecular Systematics Research Laboratory, Department of Biology, School of Science, Shiraz University, Shiraz, Iran..
Zootaxa. 2022 May 6;5133(4):543-554. doi: 10.11646/zootaxa.5133.4.5.
Glossogobius giuris was originally described as Gobius giuris from the Ganges River, India. However, based on the uncertainty of its type locality and its apparent widespread distribution, a comprehensive study is being carried out to define the correct taxonomic status of this taxon. The South African population of the Glossogobius from St. Lucia Lake, KwaZulu-Natal was described as Glossogobius tenuiformis by Fowler in 1934. It has usually been considered as Glossogobius giuris but Hoese and Hammer indicated that it was a distinct species (2021: 83). Here, based on morphological characters and a molecular data set, we redescribe Glossogobius tenuiformis and assign the Oman populations of Glossogobius to this species. Glossogobius tenuiformis is distinguished from G. giuris by the absence or very short (and often only a few papillae long) sensory papilla line 6; presence of single rows of the sensory papillae in each cheek line, 1216 pre-dorsal scale counts, and 1+1+911, usually 1+1+10, gill rakers on outer face of first arch. Glossogobius tenuiformis is also distinguished by molecular characters. Glossogobius tenuiformis shows 16% genetic distance with other members of this species complex, that includes G. laticeps from Vietnam, Bangladesh and China, G. giuris from South Africa and India and giuris C from India, Myanmar, Nepal, Bangladesh and Vietnam, and the highest genetic distance (24%) with G. circumspectus.
原唇鲮（Glossogobius giuris）最初被描述为来自印度恒河的唇鲮（Gobius giuris）。然而，由于其模式产地的不确定性及其明显的广泛分布，正在进行一项全面的研究，以确定该分类群的正确分类地位。1934 年，福勒（Fowler）将来自夸祖鲁-纳塔尔省圣卢西亚湖的南非原唇鲮（Glossogobius tenuiformis）描述为细体唇鲮（Glossogobius tenuiformis）。它通常被认为是原唇鲮（Glossogobius giuris），但何塞（Hoese）和哈默（Hammer）指出它是一个独特的物种（2021：83）。在这里，根据形态特征和分子数据集，我们重新描述了细体唇鲮（Glossogobius tenuiformis），并将阿曼的原唇鲮（Glossogobius）种群归入该物种。细体唇鲮（Glossogobius tenuiformis）与原唇鲮（Glossogobius giuris）的区别在于，第 6 感应乳突线不存在或非常短（通常只有几毫米长）；在每条颊线中存在单行感应乳突，背鳍前鳞片计数为 1216 枚，通常为 1+1+10 枚，第一弓外表面的鳃耙为 1+1+911 枚。细体唇鲮（Glossogobius tenuiformis）还具有分子特征。细体唇鲮（Glossogobius tenuiformis）与该物种复合体的其他成员具有 16%的遗传距离，其中包括来自越南、孟加拉国和中国的长鳍唇鲮（G. laticeps）、来自南非和印度的原唇鲮（G. giuris）以及来自印度、缅甸、尼泊尔、孟加拉国和越南的 giuris C，与高体近唇鲮（G. circumspectus）的遗传距离最高（24%）。
