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Issue: Vol. 5428 No. 2: 21 Mar. 2024
Type: Article
Published: 2024-03-21
DOI: 10.11646/zootaxa.5428.2.2
Page range: 194-206
Abstract views: 64
PDF downloaded: 4

A new species of Yunnanilus (Cypriniformes: Nemacheilidae) from upper Pearl River, Yunnan, China

Key Laboratory for Conserving Wildlife with Small Populations in Yunnan; Faculty of Biodiversity Conservation; Southwest Forestry University; Kunming; Yunnan 650224; China
Key Laboratory for Conserving Wildlife with Small Populations in Yunnan; Faculty of Biodiversity Conservation; Southwest Forestry University; Kunming; Yunnan 650224; China
State Key Laboratory of Genetic Resources and Evolution; Kunming Institute of Zoology; The Innovative Academy of Seed Design; Chinese Academy of Sciences; Kunming; Yunnan 650201; China; Yunnan Key Laboratory of Plateau Fish Breeding; Yunnan Engineering Research Center for Plateau-Lake Health and Restoration; Kunming Institute of Zoology; Chinese Academy of Sciences; Kunming; Yunnan 650201; China; University of Chinese Academy of Sciences; Beijing 100049; China
School of Geography and Ecotourism; Southwest Forestry University; Kunming; Yunnan 650224; China
Southwest Survey and Planning Institute of National Forestry and Grassland Administration; Kunming; Yunnan 650031; China
Key Laboratory for Conserving Wildlife with Small Populations in Yunnan; Faculty of Biodiversity Conservation; Southwest Forestry University; Kunming; Yunnan 650224; China
Pisces Molecular phylogeny morphology taxonomy Upper Pearl River China

Abstract

A new species (Cypriniformes: Nemacheilidae) Yunnanilus yangi sp. nov. was described from Upper Pearl River (Nanpan Jiang) in Mile County, Honghe Hani and Yi ethnic Autonomous Prefecture, Yunnan Province, China. Yunnanilus yangi sp. nov. can be distinguished from other species within the genus by the following characteristics: (1) upper lip with median incision; (2) upper jaw without processus dentiformis; (3) dorsal-fin origin closer to snout tip base than to caudal-fin base; (4) pelvic-fin rays i, 6-7; (5) branched caudal-fin rays 16 (vs. 14-16).

According to morphological comparison, Yunnanilus yangi sp. nov. can be distinguished clearly from all the other species in the Yunnanilus. In addition to the morphological characteristics, phylogenetic analysis of the mitochondrial cytochrome b further confirmed that Yunnanilus yangi sp. nov. is a member of Yunnanilus. Furthermore, the least genetic distance between Yunnanilus yangi sp. nov. and other species of Yunnanilus in cytochrome b gene reached 6.33%.

 

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