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Re-description of the loach species Leptobotia citrauratea ( Teleostei , Botiidae ), with the description of L. brachycephala from southern Zhejiang Province, China

Authors
  • Guo, Dong-Ming1, 2
  • Zhang, E1
  • 1 Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China , Wuhan (China)
  • 2 University of Chinese Academy of Sciences, Beijing, China , Beijing (China)
Type
Published Article
Journal
ZooKeys
Publisher
Pensoft Publishers
Publication Date
Feb 12, 2021
Volume
1017
Pages
89–109
Identifiers
DOI: 10.3897/zookeys.1017.57503
PMID: 33633484
PMCID: PMC7895807
Source
PubMed Central
Keywords
Disciplines
  • Asia
License
Unknown
External links

Abstract

Leptobotia citrauratea (Nichols, 1925), a loach species, originally described from Dongting Lake, was recently rehabilitated, based on the examination of the holotype and non-topotypical specimens. Several field surveys conducted from 2016 to 2019 in Zhejiang, Jiangxi and Hunan Provinces, P.R. China, yielded many specimens of Leptobotia which were initially identified as L. citrauratea . Molecular and morphological analyses of these specimens demonstrated that two distinct species are involved. One was identified as L. citrauratea , represented by specimens from both the Poyang and Dongting Lake (type locality) systems in Jiangxi and Hunan Provinces, and the other species is described as L. brachycephala , represented by specimens from the Ou-Jiang and Qu-Jiang, two coastal rivers of Zhejiang Province, China. Leptobotia brachycephala resembles L. citrauratea and L. micra in having a row of orange dots or an orange stripe along the dorsal mid-line of the body, extending from the nape to the caudal-fin base – a unique character in Leptobotia . Leptobotia brachycephala differs from L. citrauratea and L. micra Bohlen & Šlechtová, 2017, in caudal-fin shape and pelvic-fin insertion and proportional measurements including caudal-fin length, head length, predorsal length and anal-fin length. Its species status was further corroborated by position in a molecular phylogenetic analysis, based on the mitochondrial cyt b gene and its minimum uncorrected p-distance (2.9%) from congeneric species.

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