Cheсklist of gastropod molluscs in mangroves of Khanh Hoa province, Vietnam Author Zvonareva, Sofya Author Kantor, Yuri text Zootaxa 2016 4162 3 401 437 journal article 10.11646/zootaxa.4162.3.1 bc54479e-1a51-4fea-861e-757a5a391348 1175-5326 254973 DDBC36A0-5305-45FD-9C79-170C53B72DA9 Clithon oualaniense (Lesson, 1831) Figs 3 M–N Neritina oualaniensis Lesson, 1831: 379 . Clithon ( Pictoneritina ) oualaniense : Okutani 2000 : 108 –109, pl. 54, fig. 37. Theodoxus ( Pictoneritina ) oualaniensis : Thach 2005 : 39 , pl. 8, fig. 27. Clithon oualaniensis : Lozouet & Plaziat 2008 : 96 –97, pl. 12, figs 3–4; Tan & Clements 2008 : 491 , figs 3-37, 3-38; Poppe 2008a : 266 –267, pl. 78, figs 1–2, 4–7, 9, 11; Fukumori & Kano 2014 , 217. Clithon oualaniense : Zvonareva et al . 2015 : 8 , fig. 3(6). Material examined. Dam Bay , mangrove plantation and natural mangroves, Nha Phu , over 500 specimens . Abundance. Common. Measurements. Up to 11 mm ( Tan & Clements 2008 ). Ecological notes. Development with free swimming veliger ( Fukumori & Kano 2014 ). Generally associated with marine intertidal environments adjacent to mangroves, such as sandy banks of mangrove streams, on sand in drains and canals, and on mud in mangroves, but also is reported to occur on estuarine intertidal sand banks and mudflats ( Tan & Clements 2008 ). In studied sites it was found on mud surface under mangrove trees, on sand banks of mangrove streams and in the canals in upper and mid-intertidal zones in mangrove plantation and in natural mangroves, locally very abundant. Relation to mangroves. Eurybiotic. Distribution in Vietnam . Central coast ( Thach 2005 ). General distribution. Widespread in the Indo-Pacific region (IWP) ( Haynes 1988 ).