Valvata (Sibirovalvata) brevicula Kozhov, 1936

Marinskiy, Vadim V., 2017, Checklist of the freshwater snails (Mollusca: Gastropoda) of Mongolia, Zootaxa 4317 (1), pp. 45-78 : 53

Valvata (Sibirovalvata) brevicula Kozhov, 1936

( fig. 2 F)

Regional distribution. A Single dry Shell identified by uS aS belonging to Valvata brevicula (See fig. 2 F) waS found among SpecimenS collected by ZhaltSanoVa in an unknown waterbody of Mongolia (the label of thiS Sample waS totally deStroyed).

Extra-limital distribution. The type locality of V. brevicula iS Boguchan Bay of the Baikal Lake ( VinarSki & Kantor 2016). It iS broadly diStributed in Siberia and the RuSSian Far EaSt, including areaS neighbouring to Mongolia (SitnikoVa et al. 2015).

Morphology. The Shell of V. brevicula iS heaVily ribbed and reSembleS ShellS of V. confusa . The main difference between the two SpecieS lieS in the relatiVe height of Shell Spire; in V. brevicula it iS Significantly leSS than in V. confusa .

Figures

FIGURE 2. Valvatidae of Mongolia. A— Ƒalvata depressa (18.07.2012, Airag NUUr Lake, leg. Palatov & Vinarski). B— Ƒ. antiqua (Darkhad depression, sampling date UnknoWn, leg. Zhaltsanova). C— Ƒ. sibirica f. typica (01.08.1980, Ugiy NUUr Lake, leg. Zhaltsanova). D— Ƒ. sibirica f. frigida (20.08.2010, Zavkhan River, leg. Prokin). E— Ƒ. confusa (01.08.1980, Terkhiyn Tsagaan NUUr lake, leg. Zhaltsanova). F— Ƒ. brevicula (from an UnknoWn Waterbody, leg. Zhaltsanova). Scale bars 2 mm (except of C— 1 mm).