A new genus and species of freshwater mussel from the Pearl River Basin in Guangxi, China (Bivalvia, Unionidae, Gonideinae)

A new genus and species of freshwater mussels, Guiunio rarus Chen, Li, Dai & Wu, gen. et sp. nov. , is described from the Pearl River Basin in China based on comparative morphology and molecular phylogeny. The new taxon belongs to the tribe Gonideini and can be distinguished from other genera by...

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Bibliographic Details
Published inZoosystematics and Evolution Vol. 101; no. 2; pp. 805 - 812
Main Authors Dai, Yu-Ting, Chen, Zhong-Guang, Li, Fan, Huang, Xiao-Chen, Ouyang, Shan, Wu, Xiao-Ping
Format Journal Article
LanguageEnglish
Published Sophia Pensoft Publishers 17.04.2025
Subjects
anatomy and morphology
Aperture
Biodiversity
China
Datasets
freshwater
freshwater mussels
Genes
Mollusks
Morphology
New genera
new genus
New species
Phylogenetics
Phylogeny
River basins
rivers
species
Unionidae
watersheds
China
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ISSN1435-1935
1860-0743
1860-0743
DOI10.3897/zse.101.151802

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Summary:A new genus and species of freshwater mussels, Guiunio rarus Chen, Li, Dai & Wu, gen. et sp. nov. , is described from the Pearl River Basin in China based on comparative morphology and molecular phylogeny. The new taxon belongs to the tribe Gonideini and can be distinguished from other genera by a unique combination of characteristics: shell medium-sized, moderately thick, flat, long, sub-glossy, opaque; anterior small, rounded and short; posterior extremely expanded, wide and long, with an indistinct obtuse angle in the middle of posterior margin; papillae on flap margin highly degraded. The validity of it is further supported by the molecular phylogenetic analysis based on COI , 16S and 28S sequences.
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ISSN:1435-1935
1860-0743
1860-0743
DOI:10.3897/zse.101.151802