Radix (Radix) parapsilia Vinarski et Glöer, 2009

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 : 365

Radix (Radix) parapsilia Vinarski et Glöer, 2009

Distribution. The species is recently found at a single locality and was declared as formally new species for the Transcarpathian malacofauna ( Anistratenko et al., 2018: shell illustrated in fig. 3 , J, K). At the same time some records of R. peregra (O. F. Müller, 1774) in there as well as in adjacent Ivano-Frankivsk Region ( Stadnichenko, 2004) might be treated as R. parapsilia . Currently only three localities of this species are discovered in the region: 16, 53 and 56 ( fig. 1 , table 1 ). Distribution of R. parapsilia in Ukraine is also not clearly studied and needs more extensive field samplings. General distribution — Northern Eurasia ( Vinarski, Kantor, 2016).

R e m a r k s. In the Transcarpathia the species is found in shallow zone of rivers, streams and canals from 120 up to 540 m a. s. l. (table 2). Long time this species had been known in the Russian literature as Lymnaea (Radix) psilia (Bourguignat, 1862) . However, Vinarski and Glöer (2009) showed that the syntypes of L. psilia represent juvenile specimens of L. stagnalis and thus a substitute name was created to replace L. psilia sensu Kruglov, 2005 non Bourguignat, 1862. The specimens of R. parapsilia differ from the typical R. auricularia by its higher spire and less inflated body whorl ( Anistratenko et al., 2018: compare fig. 3 , I and fig. 3 , J, K).

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.