Checklist of the Carnivorous Snail Superfamily Streptaxoidea Gray, 1860 (Gastropoda: Eupulmonata) from Laos with Description of a New Species


  • Anny Vanhdibay Department of Biology, Faculty of Natural Science, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS
  • Chathala Viennasai Department of Biology, Faculty of Natural Science, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS
  • Patisith Mitthiyaphone Research Academic and Service Office, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS
  • Chanthanom Deuanemany Research Academic and Service Office, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS
  • Thanit Siriboon Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok 10110, THAILAND
  • Khamla Inkhavilay Research Academic and Service Office, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS


biodiversity, carnivorous snail, checklist, endemic, limestones


The superfamily Streptaxoidea is widespread in the tropical region and represents a major portion of the land snail fauna of most Southeast Asian countries. Laos is located on one of the biodiversity hotspots in this region, with high mountain ranges and limestone karsts. Herein, an up-to-date checklist is provided of all known Streptaxoidea species recorded in Laos until the year 2022. This annotated checklist comprises 23 species (9 Diapheridae and 14 Streptaxidae) with brief taxonomic notes/remarks when necessary. Of these, Haploptychius somsaki Vanhdibay and Inkhavilay, sp. nov., is described based on shell morphological characters of specimens collected from the limestone karsts in central Laos. The species has an aperture oblique-ovate; peristome discontinuous, expanded, reflected, and thickened with enlarged columella fold adjacent to columellar axis. A systematic revision and more field research are required to fully reveal the species diversity of the superfamily Streptaxoidea in Laos.


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How to Cite

Vanhdibay, A. , Viennasai, C. , Mitthiyaphone, P. , Deuanemany, C. , Siriboon, T. and Inkhavilay, K. 2023. Checklist of the Carnivorous Snail Superfamily Streptaxoidea Gray, 1860 (Gastropoda: Eupulmonata) from Laos with Description of a New Species. Tropical Natural History. 7 (May 2023), 203–212.



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