Shell of Rhiostoma morleti A syntype MNHN-IM-2000-20961 from chaine de partage entre le Mékong et le Ménam B syntype MNHN-IM-2000-33837 from Ha-Giang C syntype MNHN-IM-2000-33838 from Ha-Giang D syntype RBINS-MT-658845 from Not-Son, Tonkin E, F specimens CUMZ 10004/2 from Ban Na Wid, Vieng Xai, Houaphanh, Laos. Photograph: M Caballer and V Heros, MNHN (A–C).

 
 
  Part of: Tongkerd P, Tumpeesuwan S, Inkhavilay K, Prasankok P, Jeratthitikul E, Panha S, Sutcharit C (2023) Systematic revision of the snorkel snail genus Rhiostoma Benson, 1860 (Gastropoda, Caenogastropoda, Cyclophoridae) with descriptions of new species. ZooKeys 1142: 1-144. https://doi.org/10.3897/zookeys.1142.90097