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.