Gyraulus eichwaldi

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 : 99

Gyraulus eichwaldi (Clessin & Dybowski in Dybowski, 1887)

°1876 Pl.[anorbis] Eichwaldi. - Grimm: 157 (nomen nudum).

*1887 Planorbis Eichwaldi Clessin & Dybowski in Dybowski: 49-52.

1888 Planorbis Eichwaldi Grimm. - Dybowski: 79, pl. 2, fig. 11 a–c, pl. 3, fig. 10 a–c.

?1966b Anisus (Andrusowia) [sic] eichwaldi infundibularis Logvinenko and Starobogatov: 1472, fig. 4.

?1977 Anisus djalali Tadjalli-Pour: 109, pl. 2, fig. 10.

2016 Gyraulus (Gyraulus) eichwaldi (Grimm in W. Dybowski, 1888). - Vinarski and Kantor, 2016: 378.

Status. Accepted Pontocaspian species.

Type locality. Caspian Sea (no details).

Distribution. Middle and southern Caspian Sea ( Logvinenko and Starobogatov 1969). This species was mentionedfrom depths between 200 and 900 m in the South Caspian Basin of Azerbaijan ( Mirzoev and Alekperov 2017, who reported the species as Anisus eichwaldi ).

Taxonomic notes. The species is characterised by a relatively large, asymmetrical shell. Anisus eichwaldi infundibularis is probably a morphotype of G. eichwaldi . We are uncertain about the status of Anisus djalali Tadjalli-Pour, 1977 as the description is very brief and the photographs are not very clear. It may be within the range of the morphological variability of G. eichwaldi .

Conservation status. Not assessed.