Dumrongrojwattana, P., Jaroonpongsawat, S. and Tekavong, R. 2023. Two New Species of Opisthostoma (Caenogastropoda: Diplommatinidae) from Southern Thailand. Tropical Natural History. 23, 7 (May 2023), 181–186. DOI:https://doi.org/10.58837/tnh.23.7.258827.