Two New Species of Opisthostoma (Caenogastropoda: Diplommatinidae) from Southern Thailand


  • Pongrat Dumrongrojwattana Department of Biology, Faculty of Science, Burapha University, 169 Longhaad Bangsaen Road, Mueang, Chonburi 20131, THAILAND
  • Saruttaya Jaroonpongsawat Technology and Informatics Institute for Sustainability (TIIS). National Science and Technology Development Agency (NSTDA). Pathumthani 12120, THAILAND
  • Rattanawadee Tekavong Technology and Informatics Institute for Sustainability (TIIS). National Science and Technology Development Agency (NSTDA). Pathumthani 12120, THAILAND


diversity, leaf litter, limestone,, microsnail, Prosobranchia


Opisthostoma platyconcha sp. nov. and Opisthostoma somsakpanhai sp. nov. are described from limestone hills in the South of Thailand. These new species can be distinguished from their congeners by prominent shell characters: shape, number of radial ribs per 0.5 millimeters, and distinct constriction. This is the first report of Opisthostoma species in Phatthalung and Chumphon provinces; there are now three species of this genus in Thailand.


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How to Cite

Dumrongrojwattana, P. , Jaroonpongsawat, S. and Tekavong, R. 2023. Two New Species of Opisthostoma (Caenogastropoda: Diplommatinidae) from Southern Thailand. Tropical Natural History. 7 (May 2023), 181–186.



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