Ladislavella (Ladislavella) terebra ( Westerlund, 1885 )

Marinskiy, Vadim V., 2017, Checklist of the freshwater snails (Mollusca: Gastropoda) of Mongolia, Zootaxa 4317 (1), pp. 45-78 : 54

Ladislavella (Ladislavella) terebra ( Westerlund, 1885)

( fig. 4 C)

Regional distribution. We found two empty ShellS of Ladislavella terebra in ZMMU collection (Orkhon RiVer floodplain near Shamor Settlement in Northern Mongolia, 31.07.1982, leg. K.G. MikhailoV). It iS the firSt report of L. terebra from thiS country.

Extra-limital distribution. ThiS SpecieS iS widely diStributed in Siberia; it haS repeatedly been recorded from EaStern Europe under the name Lymnaea occulta (Jackiewicz, 1959) (See VinarSki 2012 for detailS). The Snail iS common in regionS of Southern Siberia adjacent to Mongolia (StarobogatoV & Streletzkaja 1967; ProzoroVa et al. 2009).

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).