Diversity and Phylogenetics of Freshwater Mussels (Unionidae) from Southern Thailand with the Description of One New Genus and Five New Species-Group Taxa
Ekaterina S. Konopleva,
Vachira Lheknim,
Rujinard Sriwoon,
Alexander V. Kondakov,
Alena A. Tomilova,
Mikhail Y. Gofarov,
Ilya V. Vikhrev,
Ivan N. Bolotov
Affiliations
Ekaterina S. Konopleva
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Prospect 20, 163020 Arkhangelsk, Russia
Vachira Lheknim
Division of Biological Science, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand
Rujinard Sriwoon
Division of Biological Science, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand
Alexander V. Kondakov
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Prospect 20, 163020 Arkhangelsk, Russia
Alena A. Tomilova
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Prospect 20, 163020 Arkhangelsk, Russia
Mikhail Y. Gofarov
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Prospect 20, 163020 Arkhangelsk, Russia
Ilya V. Vikhrev
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Prospect 20, 163020 Arkhangelsk, Russia
Ivan N. Bolotov
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Prospect 20, 163020 Arkhangelsk, Russia
Southern Thailand represents a region of unique freshwater biodiversity with many endemic taxa, including a number of freshwater mussel species (Bivalvia: Unionidae). In this study, we recognize 13 taxa in the tribes Contradentini, Rectidentini, Pseudodontini (subfamily Gonideinae), and Indochinellini (subfamily Parreysiinae) that inhabit different localities in the Songkhla Lake, Tapi River, and Tha Taphao River basins. Based on the results of morphological and phylogenetic analyses, we discovered among these mussels six taxa new to science, including one genus, three species, and two subspecies. New taxonomic names are introduced here as follows: Songkhlanaiagen. nov.; S. tamodienicagen. & sp. nov.; Sundadontina plugpomenicasp. nov.; Monodontina vondembuschiana tapienicassp. nov.; M. vondembuschiana thasaenicassp. nov. (Pseudodontini); and Trapezoideus thachiadensissp. nov. (Contradentini). These new taxa confirm the high conservation priority of the Southern Thai freshwater mussel fauna.
