Physa taslei Bourguignat, 1860 / Ph. dalmatina Küster, 1844

(fig. 6 B)

Regional distribution. Another SpecieS of Physa, with relatiVely higher Spire (aS compared to Ph. fontinalis) and oVoid Shell Shape (See fig. 6 B), waS found in a Sample collected in the HöVSgöl Lake, at the mouth of the Khankh RiVer (leg. T. SitnikoVa; LIN). Taylor & SitnikoVa (2004) and SitnikoVa et al. (2006) mentioned thiS SpecieS aS Physa dalmatina KüSter, 1844 . No localitieS of it in Mongolia, except of the HöVSgöl Lake, haVe been reported.

Remarks. According to Taylor (2003), Ph. dalmatina iS known from a Very limited number of localitieS Situated in the Balkan countrieS and in the Southern part of WeStern Siberia (Lake Sartlan). StarobogatoV et al. (1989) accepted Ph. dalmatina aS a Valid SpecieS but belieVed itS diStribution iS reStricted to Southern Europe and did not include it into their liSt of the PhySidae of the ex-USSR fauna. TheSe authorS thought that the RuSSian waterbodieS are inhabited by Ph. bulla O.F. Müller, 1774 (= Ph. taslei Bourguignat, 1860) that iS cloSely allied to Ph. dalmatina . Recently, Khokhutkin & VinarSki (2013) accepted the taxonomic name Ph. bulla aS a junior Synonym of Ph. fontinalis, that SubSequently waS corroborated by NekhaeV et al. (2015) after examination of the type SerieS of Ph. bulla .

Due to Scarcity of information on Ph. dalmatina (the type SerieS of it waS deStroyed during WWII, and Taylor [2003: 165] confeSSed he haS Seen no Specimen of thiS SpecieS), it iS currently impoSSible to decide if thiS taxonomic name repreSentS a Senior Synonym of Ph. taslei .