Cobitis beijingensis Sun & Zhao, in Sun, X.-Y. Li, X.-J. Li, Hao, Sheng et Zhao, 2025. |
Abstract
A new spined loach, Cobitis beijingensis, is described from Beijing, China. The new species can be distinguished from other congeners by a combination of characters: 1) Lamina circularis on pectoral fin of male elongated, posterior margin slightly serrated; 2) possessing 14–18 (mode 15) pre-pelvic myotomes; 3) pelvic fin inserted below 3rd–5th branched dorsal-fin ray; 4) total vertebrae 4+ 36–38 (mode 37); 5) L2 of the Gambetta’s pattern does not exist or is fused with L1. The molecular phylogenetic analyses based on mitochondrial Cyt b also support C. beijingensis to be a new species.
Key Words: Beijing, freshwater fish, molecular phylogeny, morphology, taxonomy
Cobitis beijingensis sp. nov., holotype, ASZIB 240630, 55.0 mm standard length; A. Lateral view; B. Dorsal view; C. Ventral view; D. Original drawing. |
Live individuals of Cobitis beijingensis sp. nov. A. Holotype, ASIZB 240630, male; B. Uncatalogued, female; C. Paratype, ASIZB 240682, male, photographed in aquarium. |
Cobitis beijingensis Sun & Zhao, sp. nov.
Diagnosis: The new species can be distinguished by the combination of the following characters: Lamina circularis on pectoral fin elongated, posterior margin slightly serrated; 14–18 (mode 15) prepelvic myotomes; pelvic fin inserted below 3rd–5th branched dorsal-fin ray; total vertebrae 4+ 36–38 (mode 37); the second Gambetta line (L2) does not exist or is fused with the first line (L1).
Zhi-Xian Sun, Xue-Yuan Li, Xue-Jian Li, Jun-Yuan Hao, Dong Sheng and Ya-Hui Zhao. 2025. Cobitis beijingensis, A New spined loach from northern China (Cypriniformes, Cobitidae). Zoosystematics and Evolution. 101(1): 55-67. DOI: doi.org/10.3897/zse.101.137363