Systematic position of Lymnaea corvus (Gmelin, 1788) (Gastropoda: Pulmonata)

In her e.rlief paper (JACKIEWICZ 1959) the .uthor distinguished within the complex species Gill¥ jiWitt:dis" (0. F. M0LLER. 177<4) the three species: a.th ~ GMELIN, 1788, a &miYA6r HELD, 1836, .,d a ~ JACKIEWICZ, 1959. The species were distinguished mainly on a basis of the chwacters of their reproduclive organs. In the present paper it is shewn that, owinf to the chwacters of both its reproductive orgMS and shell. a tw'1W is most closely related to L_,_,,.,.. {KUSTER. 1862) and L. s~ (LINNAEUS. 1758). However, the latter hee species are m.kedly different from other lymnaeids, so that it seems justified to create within the genus L~• LAMARCK. 1799 the new separate subgenus L_,_, s. stricto, for the three spec~es to be placed in it