Abstract
The present work contains descriptions of two new species of Landouria and a key to Thai species of this genus. Landouria bellasp. nov. is described from isolated limestone hills in Ratchaburi and Phetchaburi provinces, western Thailand. This new species is characterized by its small depressed-globose shell without a peripheral keel, the presence of a small, thin lamella on the columellar side of the inner aperture, a long, cylindrical distally bent flagellum, a short penis with a rounded verge, and a short, thick free oviduct and vagina. The second new species, Landouria monodonsp. nov. is described from sandstone hills in Kalasin Province, northeastern Thailand. This species has a depressed-conic shell with a blunt peripheral keel, a thick prominent lamella on the columellar side of the inner aperture, a short, finger-shaped, distally bent flagellum, and a long penis with a small, short verge.
Reference42 articles.
1. The diversity of land snail fauna in Chonburi Province, Eastern Thailand.;Boonngam;Witthayasan Kasetsat Witthayasat,2008
2. Techniques for collecting, handling, preparing, storing and examining smallmolluscan specimens
3. Mollusca, IX
4. Aktualisierte Liste der terrestrischen Gastropoden Thailands.;Hemmen;Schriften zur Malakozoologie aus dem Haus der Nature—Cismar,2001