Radix (Peregriana) intermedia (Lamarck, 1822)
publication ID |
https://doi.org/ 10.37828/em.2018.18.1 |
persistent identifier |
https://treatment.plazi.org/id/03F76832-EB6E-FFAF-2681-FE16BBD6FB43 |
treatment provided by |
Felipe |
scientific name |
Radix (Peregriana) intermedia (Lamarck, 1822) |
status |
|
Radix (Peregriana) intermedia (Lamarck, 1822)
( Fig. 3 View Figure 3 , N)
Distribution: One of the widespread pond snails in the region – we found its populations in seven localities ( Table 1). In Ukraine the species is registered in Forest-Steppe and Polissya zones ( Stadnichenko 1982, 2004), recently recorded also in Transcarpathian ( Stadnichenko & Gyrin 2011). General distribution – Palearctic.
Remarks: In the Transcarpathian this species inhabits shallow zone of rivers and canals up to 400 m a.s.l. associating mostly with macrophytes.
Taxonomic remarks: Like R. ampullacea (see above), this species is closely allied to R. balthica and can be distinguished from the latter by its higher spire and more oblong shell. The validity of R. intermedia is accepted in the Russian literature ( Stadnichenko 2004; Kruglov 2005), whereas the Western European malacologists usually consider it as a synonym of R. balthica .
Interestingly, that among the mollusks listed as co-occurring with the pond snails ( Table 1) two records are apparently new for the Transcarpathian region of Ukraine. In a stagnant pool located in Mukacheve district likely Bithynia troschelii (Paasch, 1842) , a regionally new species of the family Bithyniidae was found (locality 7). The shells of this species having convex whorls separated by a deep suture have usually been identified as “ Bithynia leachii ” or ” Bithynia troschelii ” (e.g. Falniowski et al. 2004); more material are necessary to ensure of specimens found identity. Only B. tentaculata (Linnaeus, 1758) was included into the regional malacofauna lists so far ( Zdun 1960).
Finding of Terrestribythinella baidashnikovi in the locality 13 adds the new record for this rare species distribution, only known from a few other Transcarpathian locations so far ( Anistratenko & Stadnichenko 1995; Anistratenko et al. 2017).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.