Neritidae

Wesselingh, Frank, Poorten, Jan Johan ter, Kijashko, Pavel, Albrecht, Christian, Anistratenko, Olga Yu, Frolov, Pavel, Gándara, Alberto Martinez, Gittenberger, Arjan, Gogaladze, Aleksandre, Mikhail Karpinsky, Popa, Luis, Sands, Arthur F, Vandendorpe, Justine & Wilke, Thomas, 2019, Mollusc species from the Pontocaspian region - an expert opinion list, ZooKeys 827, pp. 31-124 : 60

Family Neritidae Rafinesque, 1815

Theodoxus danubialis (Pfeiffer, 1828)

*1828 Nerita danubialis Pfeiffer: 48, pl. 8, figs 17, 18.

2009 Theodoxus danubialis (C. Pfeiffer, 1828). - Fehér et al.: figs 2 a–k, 4 a–c, 5 a–c.

2012 Theodoxus danubialis (Pfeiffer, 1828). - Welter-Schultes: 27, unnumbered text figures.

2016 Theodoxus (Theodoxus) danubialis (Pfeiffer, 1828). - Vinarski and Kantor: 156 [and synonyms therein].

Status. Accepted native species.

Type locality. Danube River, Vienna, Austria.

Distribution. Danube River catchment, central to south-eastern Europe, as well as northern Italy ( Fehér et al. 2009).

Taxonomic notes. The latest phylogenetic data supports a sister relationship between Theodoxus danubialis and the clade containing T. fluviatilis and T. velox (AFS, unpublished data). Some authors believe T. danubialis and T. prevostianus may represent different species given some level of genetic, ecological, and morphological differentiation ( Fehér et al. 2009, Welter-Schultes 2012; but see also Bandel 2001). More recent unpublished results may suggest that the genetic level of differentiation between these species is more indicative of intraspecific diversity within a single species (AFS, unpublished data).

Conservation status. Least Concern ( Tomovic et al. 2010).