Monodacna albida (Logvinenko & Starobogatov, 1967)

*1967 Hypanis albida Logvinenko & Starobogatov: 232.

1969 Hypanis albida Logv. & Star. - Logvinenko and Starobogatov: 336, fig. 353(3).

1973 Hypanis albida Logvinenko & Starobogatov, 1967. - Grossu: 144, text fig. 28.

2013 Adacna (Monodacna) albida (Logvinenko & Starobogatov, 1967). - Kijashko in Bogutskaya et al.: 380, fig. 162, photo 51.

2016 Adacna (Monodacna) albida (Logvinenko & Starobogatov, 1967). - Vinarski and Kantor: 66.

Status. Pontocaspian species, endemic to Caspian Sea.

Type locality. "Western Caspian Sea southeastwards from Derbent" (Vinarski and Kantor 2016: 66).

Distribution. Caspian Sea (middle and southern Caspian Sea Basin). This species was mentioned from depths between 200 and 400 m in the South Caspian Basin of Azerbaijan (Mirzoev and Alekperov 2017, who reported the species as Hypanis albida).

Taxonomic notes. This species is part of a group of Caspian Monodacna with relative flat and wedge-shaped shells with low and sometimes poorly defined ribs ( M. albida, M. polymorpha). Like for the Monodacna caspia group (see below), we are in need of studies to assess whether these taxa might form ecomorphs of a single species.

Conservation status. Not assessed.