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A taxonomic review of Trapezidens (Bivalvia: Unionidae: Lamellidentini), a freshwater mussel genus endemic to Myanmar, with a description of a new species

Ekaterina S. Konopleva, Ivan N. Bolotov, Alexander V. Kondakov, Oleg D. Kononov, Mikhail Yu. Gofarov, Alena A. Tomilova, Zau Lunn, Nyein Chan, Than Win, Ilya V. Vikhrev
2020 Ecologica Montenegrina  

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Trapezidens Bolotov, Vikhrev & Konopleva, 2017 (Bivalvia: Unionidae: Lamellidentini) is a peculiar freshwater mussel genus, the range of which is confined to the Western Indochina Subregion (Myanmar). Here we show that this genus contains five allopatric species: Trapezidens angustior (Hanley & Theobald, 1876) from the Bago, Sittaung, and Bilin rivers; T. dolichorhynchus (Tapparone-Canefri, 1889) from the Ayeyarwady River; T. exolescens (Gould, 1843) from the Dawei River; T. scutum (Sowerby,
more » ... 8) from the Tanintharyi (Great Tenasserim) River; and T. yeti sp. nov. from the Ye River. Phylogenetically, Trapezidens angustior, T. dolichorhynchus, and T. yeti sp. nov. are closely related to each other, forming a species complex, while T. exolescens and T. scutum represent the most distant lineages within the genus. An updated synonymy for each species is compiled.
doi:10.37828/em.2020.27.6 fatcat:3i6eeru5i5ej5hapfpydcbri4u
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Ekaterina S. Konopleva, Ivan N. Bolotov, Alexander V. Kondakov, Oleg D. Kononov, Mikhail Yu. Gofarov, Alena A. Tomilova, Zau Lunn, Nyein Chan, Than Win, Ilya V. Vikhrev. "A taxonomic review of Trapezidens (Bivalvia: Unionidae: Lamellidentini), a freshwater mussel genus endemic to Myanmar, with a description of a new species." Ecologica Montenegrina (2020) 45-57