5. Viviparus contectus (Millet, 1813)

Findings in Serbia.

Paludina fasciata: Möllendorff (1873) .

Vivipara contecta: Zilch (1955) .

Viviparus fasciatus: Paunović et al. (2007a) .

Viviparus contectus: Frank et al. (1990); Karaman (2001); Karaman & Karaman, (2007); Paunović et al. (2008); Martinović-Vitanović et al. (2013); Novaković (2014 –2019 pers. comm.).

Common name. Lister’s river snail.

Morphology. Large-sized species. Greenish or black shell with three colour bands and deep suture can be up to 55 mm high. Apex is pointed, umbilicus is narrow. Animal itself is dark with yellow dots. For more details see Welter-Schultes (2012: 32, figure in the middle of the page).

Distribution and ecology. The Palearctic species is found across whole Europe and could be found in the western Siberia as well (Vavrova 2010; Vinarski & Kantor 2016). It prefers muddy substrate of standing waters, or larger rivers with plenty of vegetation. In Serbia, this species inhabits the Pannonian part, and it has been recorded from the Danube and Sava Rivers, as well from some smaller rivers (Plazović River), and lakes (Ludaš Lake).

Other remarks. The species can hybridize with Viviparus ater (Trüb & Ribi 1997) making positive identification difficult. Threatened in some parts of its areal (England, Portugal, Switzerland, Germany, and Austria) (Welter-Schultes 2012). On the IUCN Red List it has been assessed as LC, with the decreasing population trend in Europe (Vavrova 2010).