@article{Pholyotha_Sutcharit_Tongkerd_Panha_2021, title={Systematic revision of the limestone karst-restricted land snail genus Aenigmatoconcha (Eupulmonata: Helicarionidae), with description of a new species}, volume={767}, url={https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1487}, DOI={10.5852/ejt.2021.767.1487}, abstractNote={<p>Thai limestone karsts are known to contain a rich biodiversity of animals, especially terrestrial snails, but still require further intensive exploration to evaluate their biodiversity. To date, only a few studies on the limestone karst-inhabiting land snail genera have been published. The present work focuses on the species diversity and phylogenetic relationships of the limestone karst-restricted land snail genus <em>Aenigmatoconcha</em> from Thailand, based on comparative morphology and molecular evidence. The results yielded three known species (<em>A. clivicola</em> Tumpeesuwan &amp; Tumpeesuwan, 2017, <em>A. sumonthai</em> Tumpeesuwan &amp; Tumpeesuwan, 2018, and <em>A. mitis</em> (Pfeiffer, 1863) comb. nov.), plus a new species (<em>A. eunetis</em> Pholyotha &amp; Panha sp. nov). The phylogenetic analyses of partial fragments of the mitochondrial cytochrome oxidase c subunit I (COI) gene confirmed the monophyly of all recognized species and congruence with the traditional morphology-based species designations. Average uncorrected p-distances of COI sequences between species were 9.7–12.0% and within species were 0.2–4.2%. This study also provides the re-description of penial sculpture, penial sheath, flagellum, penial caecum, and mantle lobe morphology that were neglected from the type species description. The present discovery of a new species increases the known diversity of Thai land snails and will support the conservation planning to protect karst biodiversity.</p>}, number={1}, journal={European Journal of Taxonomy}, author={Pholyotha, Arthit and Sutcharit, Chirasak and Tongkerd, Piyoros and Panha, Somsak}, year={2021}, month={Sep.}, pages={55-82} }