Alvania Risso, 1826: 140

Hasegawa, Kazunori, 2022, Bathyal Rissoidae (Gastropoda: Rissooidea) off the Russian Far East coast of the Sea of Japan, with redescription of Punctulum reticulatum Golikov, 1986, Ruthenica, Russian Malacological Journal 32 (2), pp. 85-92 : 86

Genus Alvania Risso, 1826: 140

Type species. Alvania europea Risso, 1826 , subsequent designation by Nevill [1885: 105].

Remarks. Criscione et al. [2017] suggested in their molecular phylogenetic study that all the rissoid species examined by them from bathyal depths in the Sea of Japan, e.g. Alvania cf. akibai , Frigidoalvania asura , Puctulum flavum and P. tanseimaruae , formed a well-supported clade with small genetic distances, and are clearly separated from Alvania sensu stricto. It is thus apparent that the following two species cannot ultimately be assigned to the genus Alvania . However, they are here provisionally retained therein, both because of the incompleteness of our understanding of the phylogenetic relationships of genera in the family and the absence of an appropriate genus to accommodate them.