Checklist of the freshwater snails (Mollusca: Gastropoda) of Mongolia Author Marinskiy, Vadim V. text Zootaxa 2017 2017-01-01 4317 1 45 78 journal article 32235 10.11646/zootaxa.4317.1.2 d9650b33-97b2-4d9c-867b-79cd628daf8f 1175-5326 880022 Cd399D08-1Db1-4319-Aa0D-Db560C7C38Df Gyraulus terekholicus (Prozorova et Starobogatov, 1997) ( fig. 7 A) Regional distribution. ThiS SpecieS waS mentioned for Mongolia ( HöVSgöl Lake) by SitnikoVa et al . (2006). We identified G. terekholicus in SampleS from three large lakeS of WeStern Mongolia—Dorgon , Khar, and Nogoon. In all three caSeS only empty ShellS were aVailable that makeS our identification proViSional. Extra-limital distribution. The type locality of G. terekholicus iS the Tere-Khol’ Lake , Situated in TuVa Republic near the RuSSian-Mongolian border ( ProzoroVa & StarobogatoV 1997 ). . Conchologically, G. terekholicus reSembleS G. chinensis but haS a little higher number (about 20) of the proState diVerticleS (SitnikoVa et al . 2006 ), whereaS in the latter SpecieS thiS number lieS between 12 and 17 ( Appleton & Miranda 2015 ).