Subfamily Hydrobiinae Stimpson, 1865

Remarks. In addition to the taxa discussed below, the following species of Hydrobiinae have been mentioned from the Black Sea basin (updated statuses after MolluscaBase 2018a): Hydrobia aciculina (Bourguignat, 1876), H. acuta (Draparnaud, 1805), H. euryomphala (Bourguignat, 1876), H. mabilli (Bourguignat, 1876) [currently accepted as Peringia mabilli], H. macei Paladilhe, 1867 [currently accepted as Heleobia macei], H. procerula (Paladilhe, 1869) [currently considered a synonym of H. acuta] (Anistratenko et al. 2011). These species were described from the Western Mediterranean and their occurrence in the Black Sea region requires re-investigation; partly the records might be misidentifications of the species of Ecrobia listed below or Eupaludestrina ( Cochliopidae) listed above.