Didacna parallela

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 : 43

Didacna parallela Bogachev, 1932

*1932a Didacna parallela Bogachev: pl. 2, figs 2, 3.

1932b Didacna parallela Bogachev: 44, pl. 5, figs 1-7, 9.

1953 Didacna parallella [sic] Bogatchev, 1932. - Fedorov: 126, pl. 17, figs 1-11.

1969 Didacna parallella [sic] Bog. - Logvinenko and Starobogatov: 324-325, fig. 344(3).

1969 Didacna parallella [sic] Bogatchev, 1932. - Vekilov: 117-120, pl. 21, figs 1-8.

1973 Didacna parallella [sic] Bogatchev, 1922 [sic]. - Grossu: 131, text fig. 8, pl. 1, fig. 4.

2005 Didacna parallella [sic] Bogatchev, 1932. - Yanina: 237-238, pl. 12, figs 1-8.

2007 Didacna parallella [sic] Bogatchev, 1932. - Nevesskaja: 933-935, pl. 21, figs 1-5.

2013 Didacna parallela Bogachev, 1932. - Kijashko in Bogutskaya et al.: 355-356, fig. 138.

2016 Didacna parallela Bogachev, 1932. - Vinarski and Kantor: 72.

Status. Pontocaspian species, endemic to Caspian Sea.

Type locality. Khala, Apsheron Peninsula, Azerbaijan (early Khvalynian, Late Pleistocene).

Distribution. Caspian Sea, southern basin and western part of middle basin between 50-85 m water depth ( Logvinenko and Starobogatov 1969). This species was mentioned from depths between 200 and 300 m in the South Caspian Basin of Azerbaijan ( Mirzoev and Alekperov 2017), but we are not certain whether it concerns living specimens.

Remarks. Didacna parallela has been considered as extinct by Nevesskaja (2007) but was nevertheless treated in Kijashko in Bogutskaya et al. (2013). Live records are known at least until 1986 and we have no particular reason to assume it is extinct.

Conservation status. Not assessed.