Radix (Peregriana) balthica (Linnaeus, 1758)

Marinskiy, Vadim V., 2017, Checklist of the freshwater snails (Mollusca: Gastropoda) of Mongolia, Zootaxa 4317 (1), pp. 45-78 : 58

Radix (Peregriana) balthica (Linnaeus, 1758)

( Table 5; fig. 4 L )

Regional distribution. ThiS wideSpread and conchologically Variable Euro-Siberian SpecieS of lymnaeid SnailS proVed to be more or leSS common in Mongolia. We found ShellS of Radix balthica in SampleS collected in VariouS waterbodieS of WeStern and Northern Mongolia. Lymnaea ovata (Draparnaud, 1805) recorded by SitnikoVa et al. (2006) from the HöVSgöl Lake Should, moSt probably, be identified with R. balthica .

Extra-limital distribution. Europe, Siberia ( KrugloV 2005).

Remark. Three nomimal SpecieS of Peregriana of Mongolia deScribed by KrugloV & StarobogatoV (1983) are probable junior SynonymS of R. balthica . TheSe are Lymnaea (Peregriana) nogoonica KrugloV et StarobogatoV, 1983 (See fig. 5 F), L. (P.) tsalolikhini KrugloV et StarobogatoV, 1983 (See fig. 5 G), and L. (P.) mongolitumida KrugloV et StarobogatoV, 1983 (See fig. 6 D in SitnikoVa et al. 2014a). We Studied the type SerieS of theSe lymnaeidS kept in ZIN (See alSo SitnikoVa et al. 2014a). The Shell characteriSticS of the three SpecieS are Very Similar to thoSe in R. balthica , and no SubStantial differenceS in the reproductiVe SyStem among them haVe been reported ( KrugloV 2005).

Figures

FIGURE 4. Shells and genitalia of the lymnaeid snails discUssed in the paper. A— Lymnaea stagnalis (31.07.1982, floodplain of the Orkhon River, leg. Mikhailov). B— L. stagnalis (15.07.2012, Chono-Khoraikhgol River, leg. Vinarski). C— Ladislavella terebra (31.07.1982, floodplain of the Orkhon River, leg. Mikhailov). D, E— Galba sibirica (19.07.2012, Teellin-gol River, leg. Vinarski). F— G. truncatula, the copUlatory apparatUs (25.02.2010, Abkhazia, Gagra District, Wet shore of Inkit Lake, leg. Palatov). G – Radix auricularia (19.07.2012, Teellin-gol River, leg. Vinarski). H— Radix bactriana (13.07.2012, Khar Us NUUr Lake, leg. Vinarski). I— R. parapsilia (09.06.2009, Khovd River, leg. Maryinskiy). J— R. mongolica (13.07.2012, Khar Us NUUr Lake, leg. Vinarski). K— R. mongolica, a scalarid specimen (Hövsgöl Lake, leg. et det. Sitnikova, LIN). L— R. balthica (20.07.1967, Khar Dorgon NUUr Lake, leg. Zhaltsanova). M— R. intermedia, a paralectotype of Limnaea eversa (1877, Eter River near Dja-Dzassyk Monastery, leg. Potanin, ZIN). Scale bars 1 mm (E, F), 2 mm (C, I, J, K), 5 mm (A, B, G, H, L, M).