Radomaniola Szarowska, 2006

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

Radomaniola Szarowska, 2006

Remarks.

Replacement name for Orientalina Radoman, 1978. The genus is widely spread in the former Yugoslavia, but recorded also from Italy. Radoman (1983) distinguished six species of Radomaniola , and in one of them - R. curta - eight subspecies. It has to be noted that in modern phylogenetics, the only acceptable meaning of a subspecies is a geographic race, which was hardly the case in Radoman’s classification; also, far from being acceptable is that all his species-level taxonomy was based on the shell alone, strikingly variable in this genus (e.g., Falniowski et al. 2012; see also Fig. 5B-M ). Molecular and anatomical data ( Falniowski et al. 2012) did not confirm the classification of Radoman (1983), but demonstrated high genetic diversity, suggesting a flock of distinct species. The phylogeography as well as molecularly-based species discrimination in Radomaniola should be studied with more extensive material, which we are proposing to do. At the moment, considering only Radomaniola from the area sampled in this study, one can distinguish two main clades (Fig. 6 ), representing at least two distinct species. For the one including the sequences of the snails from the spring at Vranjicke Njive, type locality of Radomaniola curta curta (sequences KC011781 and KC011784), we used a provisional assignment to this species; for the second clade we provisionally used the name R. cf. bosniaca . In general, the representatives of Radomaniola were the most common snails at the studied localities, and were found at the surface, as well as in the pumped interstitial samples and could also be found in caves. Radomaniola , pigmented and with eyes, is a stygophile gastropod.

Figures

Figure 5. Shells of the studied gastropods: A Sadleriana fluminensis, locality 10 B-M Radomaniola B-H R. curta (localities: B-D - 10, E, F - 13, G - 17, H - 23) I-M R. cf. bosniaca (localities: I-K - 1, L, M - 12). Scale bar: 1 mm.

Figure 6. Maximum likelihood (ML) phylogram of the studied Radomaniola, based on the partial cytochrome oxidase subunit I (COI) sequences, bootstrap supports given if> 60 %, together with Bayesian probabilities; topotypes of R. curta curta marked with asterisks.