Shell of Rhiostoma anceyi sp. nov. A holotype CUMZ 4494/1 from Pha Hom, Phoxay, Vientiane, Laos B, C paratypes CUMZ 4494/2 from type locality D paratype CUMZ 4887 from type locality E, F specimens CUMZ 10208 from Ban Bokhoun, Boun Neua, Phongsaly, Laos.

 
 
  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