Paladilhiopsis arion Rysiewska & Osikowski, 2021

Falniowski, Andrzej, Lewarne, Brian, Rysiewska, Aleksandra, Osikowski, Artur & Hofman, Sebastian, 2021, Crenobiont, stygophile and stygobiont molluscs in the hydrographic area of the Trebisnjica River Basin, ZooKeys 1047, pp. 61-89 : 61

Paladilhiopsis arion Rysiewska & Osikowski, 2021

Fig. 14D, E

GenBank no.

COI: MW741739-MW741740; H3: MW776424-MW776425

Remarks.

Live specimens were pumped from an interstitial habitat at the locality 21 (Fig. 4 ). They were recently described as new to science ( Hofman et al. 2021). Morphologically and molecularly, they were distinct from the moitessieriid species discussed in Hofman et al. (2018). Rysiewska et al. (2021) demonstrated that at least some of the species assigned to the genus Plagigeyeria Tomlin, 1930 belong to the genus Paladilhiopsis Pavlović, 1913. Our specimens from Gučina in Trebinje molecularly formed the sister clade with Plagigeyeria montenegrina Bole, 1961 from Obodska Pečina in Montenegro. Also, the outline and orientation of the long axis of the aperture was characteristic of Plagigeyeria . The similarly shaped shell and geographic range may suggest assignment to P. nitida Schütt, 1963, but the number of whorls of our specimens is much higher than presented by Schütt (1972).

Figures

Figure 4. Distribution of the studied taxa. Localities' numbers correspond to Table 1.

Figure 14. Shells of the studied gastropods: A-C Emmericia ventricosa (localities: A - 1, B - 5, C - 12) D, E Paladilhiopsis arion (locality 21) F Valvata montenegrina (locality 20) G Radix labiata (locality 16) H, I Galba truncatula (localities: H - 15, I - 16) J, K Ancylus recurvus (localities: J - 15, K - 13) L, M Ancylus sp. C 4 (localities: L - 9, M - 16) N Succinea cf. putris (locality 10). Scale bars: 1 mm.