A new species of <i>Triplophysa</i> (Cypriniformes, Nemacheilidae) from Weihe River in Gansu Province, China

Abstract

A: Map showing sampling sites of Triplophysa weiheensis sp. nov. (star symbol, solid star for type locality). 1: Zhang River, at Chenjiamo Village, Zhangxian County; 2: Niutou River, at Hongbao Town, Qingshui County; 3: Niutou River, at Maiji District, Tianshui City. B: Lateral view, dorsal view, and ventral view of Triplophysa weiheensis sp. nov. , NWIPB 1505189, holotype, 65.8 mm SL. C: Micro CT graph of skeletal system of Triplophysa weiheensis sp. nov. NWIPB 1505183, paratype, 64.1 mm SL. D: Structure of alimentary canal, Triplophysa weiheensis sp. nov. , NWIPB 1505185, paratype, 65.5 mm SL. E: Dorsal view of bony capsule of air bladder, Triplophysa weiheensis sp. nov. , NWIPB 1505185, paratype, 65.5 mm SL. F: Characters of sexual dimorphism of Triplophysa weiheensis sp. nov. Characters are highlighted in red circles. G: Morphological comparison between Triplophysa weiheensis sp. nov. and T. stoliczkae by PCA with 13 morphometric characters (Supplementary Table S2). H: Phylogenetic relationships of Triplophysa species based on cyt b gene sequences. Posterior probabilities (PP) obtained from Bayesian analyses are indicated on branches.