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Montenegro, Skadar Lake area, old stillwater channel near the River Crnojevica and above the village Rijeka Crnojevica, 15 m asl., 42°21.297'N, 19°01.122' E, 10.xi.2012, Pesic.
This species was described by Wohlberedt (1901) from River Crnojevica as subspeces of Bithynia mostarensis. In the short original description, Wolhberedt (1901) stated that it differs from the nominal form by one additional whorl and the more acute spire. Later on, Reischutz et al. (2008) reported this species from River Crnojevica and mentioned its similarity with Bithynia radomani Gloer & Pesic, 2007, a species relatively frequent in the Skadar Lake basin. Recently, we collected Bithynia montenegrina in an old stillwater channel near the River Crnojevica, so we were able to examine the morphology of this species and compare it with Bithynia radomani. From the latter species, Bithynia montenegrina can be distinguished by more slender penis and perennial appendix and the relatively shorter flagellum (compare Fig. 3b and 3d).
In some females we found specimens with a pseudopenis, a very small, not completely developed penis. This phenomenon is found also in Bithynia danubialis Gloer & Georgiev, 2012, a species recently described from the Bulgarian part of the Danube (Gloer and Georgiev, 2012). It is worth to note that most of collected specimens were taken under stones and mud when the old stillwater channel was dry (Fig. 4A).
- Pesic, V; Gloer, P; 2013: A new freshwater snail genus (Hydrobiidae, Gastropoda) from Montenegro, with a discussion on gastropod diversity and endemism in Skadar Lake ZooKeys, 281: 69-90. doi
- Reischutz A, Reischutz N, Reischutz P (2008) Ein Nachtrag zur Kenntnis der Bithynia-Arten von Montenegro (Gastropoda: Prosobranchia: Bythiniidae). Nachrichtenblatt der Ersten Vorarlberger Malakologischen Gesellschaft 15: 41-43.