A new cave-dwelling species of the genus Triplophysa (Cypriniformes, Nemacheilidae) from southwest China

Based on morphological and molecular data, we described a new cave-dwelling species, Triplophysa xiuwenensis sp. nov. , from the karst region of southwest China. The new species can be distinguished from its congeners by the following morphological characteristics: body scaleless without pigmentatio...

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Bibliographic Details
Published inZoosystematics and Evolution Vol. 101; no. 4; pp. 1383 - 1396
Main Authors Zhu, Ting-Ting, Yuan, Feng-Hua, Zhang, Ren-Yi, Zhao, Ya-Hui
Format Journal Article
LanguageEnglish
Published Sophia Pensoft Publishers 05.08.2025
Subjects
Anus
Cavernicolous species
Congeners
Cytochrome b
New species
Physical characteristics
Pigmentation
Triplophysa
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Summary:Based on morphological and molecular data, we described a new cave-dwelling species, Triplophysa xiuwenensis sp. nov. , from the karst region of southwest China. The new species can be distinguished from its congeners by the following morphological characteristics: body scaleless without pigmentation; eye diameter of HL with 4.6–6.7%; tip of pelvic fin not reaching anus; outer rostral barbel reaching to posterior margin of eyes; 14–15 branched caudal fin rays. Phylogenetic relationships based on the mitochondrial cytochrome b (Cyt b ) gene support the validity of the new species. The discovery of the new species brings the number of cave-dwelling Triplophysa species in Guizhou Province to 15, making it the region with the highest number of Triplophysa cave species in the southwestern karst area.
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ISSN:1435-1935
1860-0743
DOI:10.3897/zse.101.154380