Radix (Peregriana) tumida (Held, 1836)

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 : 367

Radix (Peregriana) tumida (Held, 1836)

D i s t r i b u t i o n. The species is recently found in the Transcarpathian Region for the first time ( Anistratenko et al., 2018: shell illustrated in fig. 3 , P). Currently only four localities of R. tumida are discovered in the region: 10, 18, 21 and 25 ( fig. 1 , table 1 ). In Ukraine the species registered in all regions (Anistratenko, Сhernogorenko, 1989; Stadnichenko, 2004). General distribution — Northern Palearctic ( Vinarski, Kantor, 2016).

Remarks. In the Transcarpathia R. tumida only inhabits well warmed up water of rivers of altitude zone in between 100 and 240 m a. s. l. (table 2) usually associating with vegetation. Shell of R. tumida resembles R. ampla differentiating by higher spire and less inflated aperture; some differences in the proportions of the copulatory organs of these two species exist too (see Anistratenko et al., 2018).

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.