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Vol. 42 No. 3, 2003
Taxonomic Review of the Genus Sinocrossocheilus Wu
(Teleostei: Cyprinidae), with a Description of Four New Species
Rui-Feng Su1,2, Jun-Xing Yang1,* and Gui-Hua Cui1
1Department of Systematic Zoology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
2Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, China
Rui-Feng Su, Jun-Xing Yang and Gui-Hua Cui (2003) All Sinocrossocheilus species, except S. microstomatus, are reviewed. Four new species, S. labiata, S. papillolabra, S. nigrovittata, and S. longibulla, are described. The genus Sinocrossocheilus
differs from other genera of Cyprinidae by the last simple dorsal fin
ray being unserrated and unossified, the last unbranched anal fin ray
being unserrated and unossified, the 5-branched anal fin rays, the
mouth gap being inferior, the rostral cap covering the lower jaw and
connecting directly with the lower lip, a row of fleshy lobes on the
lower jaw, and a cloudy black spot above the pectoral fin. Sinocrossocheilus labiata is small and has 22 predorsal scales; S. longibulla has a very large air bladder; S. papillolabra possesses a well-developed ventral fin and a wide band covered by fleshy papillae on the lower lip; and S. nigrovittata possesses black longitudinal stripes along the lateral line. Crossocheilus bamaensis and Crossocheilus liuchengensis are transferred to the genus Sinocrossocheilus. Sinocrossocheilus
species are endemic to the central and eastern Yunnan-Guizhou Plateau
of China, where river systems are anfractuous, including seasonal
rivers, cave rivers, underground rivers, and streamlets between
mountains. These separated rivers probably provide conditions for the
allopatric speciation of the Sinocrossocheilus.
Key words: Taxonomy, Cyprinidae, Sinocrossocheilus, New species, China.
*Correspondence: Tel: 86-871-5196527.
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