Lymnaea fragilis (Linnaeus, 1758)

Anistratenko, Vitaliy V., Vinarski, Maxim V., Anistratenko, Olga Yu., Furyk, Yurii I. & Degtyarenko, Elena V., 2018, New data on pond snails (Mollusca: Gastropoda: Lymnaeidae) inhabiting the Ukrainian Transcarpathian: diversity, distribution and ecology, Ecologica Montenegrina 18, pp. 1-14 : 7

Lymnaea fragilis (Linnaeus, 1758)

( Fig. 3 , B)

Distribution: The species is recorded in the localities 7, 11 and 17 ( Table 1). In Ukraine the species is registered in all regions including the Transcarpathian ( Stadnichenko 2004: Stadnichenko & Gyrin 2011). General distribution covers Western and Central Europe.

Remarks: In the Transcarpathian this species occurs sporadically, inhabits mainly natural and artificial ponds, associated with macrophytes at depths of 0.5–1.0 m.

Though genetic studies (e.g. Mezhzherin et al. 2008; Vinarski et al. 2012a) did not reveal any reliable genetic traits distinguishing „ stagnalis ‟ and „ fragilis’ we treat these forms as two conchologically separated “morphospecies”. The proper status of L. fragilis is to be clarified by means of the integrative taxonomic approach.

Figures

Figure 3. Shells of pond snails found. A – Lymnaea stagnalis from locality 16; B – L. fragilis, locality 7; C – Stagnicola corvus, locality 8; D – Galba truncatula, locality 21; E – G. subangulata, locality 16; F – G. oblonga, locality 4; G, H – Ladislavella terebra, loc. 17; I – Radix auricularia, locality 3; J, K – R. parapsilia, locality 10; L – R. ampullаcea, locality 3; M – R. balthica, locality 2; N – R. intermedia, locality 4; O – R. ampla, locality 15; P – R. tumida, locality 15. Scale bar = 10 mm for A–C and 5 mm for D–P.