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 Assiminea brevicula ( Pfeiffer, 1855 ) Figs 7 G–H Hydrocena brevicula Pfeiffer, 1855 : 306 . Assiminea brevicula : Abbott 1958 : 238 –241, pl. 15, fig.7, pl. 22; Thach 2005 : 55 , pl. 8, fig. 21. Optediceros brevicula : Lozouet & Plaziat 2008 : 118 –121, pl. 23, figs 3–4, pl. 24, fig. 8. Metassiminea philippinica : Zvonareva et al . 2015 : 9 . Material examined. Nha Phu Bay , Dam Bay , mangrove plantation, 40 specimens . Abundance. Common. Measurements. Up to 6.5 mm ( Lozouet & Plaziat 2008 ). Ecological notes. Found on mud bottom of the lower estuarine mangals ( Lozouet & Plaziat 2008 ). In studied sites it was found on mud surface under mangrove trees. Relation to mangroves. Mangrove-associated (D.G. Reid, personal communication). Distribution in Vietnam . Central coast ( Thach 2005 ). General distribution. From Thailand to Philippines. Ceylon and west side of India eastward through the Philippines to Borneo and north to Taiwan ( Abbott 1958 ).