Stagnicola (Corvusiana) corvus (Gmelin, 1791)

Anistratenko, V. V., Furyk, Yu. I., Anistratenko, O. Yu. & Degtyarenko, E. V., 2019, A Review Of Species Diversity, Distribution And Ecology Of Freshwater Gastropod Molluscs Inhabiting The Ukrainian Transcarpathian, Vestnik Zoologii 53 (5), pp. 349-374 : 363

Stagnicola (Corvusiana) corvus (Gmelin in Linnaeus, 1791)

Distribution. In Ukraine the species inhabits basins of the Dnipro Bug River and Pripyat Polissia zone (Anistratenko, Сhernogorenko, 1989; Stadnichenko, 2004). In the Transcarpathian Region S. corvus has been recently recorded ror the first time at only a single locality ( Anistratenko et al., 2018: shell depicted in fig. 3 , C). Currently populations of this snail found in few additional localities: 6-8, 14, 28 and 32 ( fig. 1 , table 1 ).

Remarks. In the Transcarpathian Region this species inhabits usually warm (T = 16.0–25.7 °С), mainly small even periodically dried waterbodies, natural ponds and roadside canals within the altitude range between 100 and 165 m a. s. l., occacionally — up to 560 m a. s. l. (table 2). S. corvus prefer clay-silty bottom sediments though are associating with macrophytes (e. g. Iris pseudacorus L.) too. These pond snails are relatively rare in terms of number of populations we found in the region.

Figures

Fig. 3. Shells of Transcarpathian gastropod molluscs: 1 — Viviparus viviparus (locality 12); 2 — Contectiana contecta (locality 15); 3 — Viviparus sphaeridius (locality 12); 4 — Bithynia tentaculata (locality 15); 5 — Valvata (Cincinna) ambigua (locality 15); 6 — Bithynia troschelii (locality 13); 7 — Valvata (Cincinna) piscinalis (locality 22); 8 — Lithoglyphus naticoides (locality 9); 9–11 — Planorbis planorbis (locality 15); 12, 13 — Planorbarius corneus (locality 15). Scale bars are given for 1–3, 4–8, and 9–13 correspondingly.

Fig. 1. Map showing the localities of samples studied. Details for each sampling point are given in table 1.