Ladislavella B. Dybowski, 1912

Aksenova, Olga V., Vinarski, Maxim V., Itagaki, Tadashi, Ohari, Yuma, Oshida, Tatsuo, Kim, Sang Ki, Lee, Jin Hee, Kondakov, Alexander V., Khrebtova, Irina S., Soboleva, Alena A., Travina, Oksana V., Sokolova, Svetlana E., Palatov, Dmitry M., Bespalaya, Yulia V., Vikhrev, Ilya V., Gofarov, Mikhail Yu. & Bolotov, Ivan N., 2024, Taxonomy and trans-Beringian biogeography of the pond snails (Gastropoda: Lymnaeidae) of East Asia: an integrative view, Zoological Journal of the Linnean Society 201 (4), pp. 1-24 : 12

Genus Ladislavella B. Dybowski, 1912 s.l.

According to Vinarski (2012, 2013) and Vinarski and Kantor (2016), the genus Ladislavella consists of two vicariant subgenera: Ladislavella s.s. (Eastern Europe to Russian Far East) and Walterlymnaea Starobogatov & Budnikova, 1976 (Beringia, North American mainland, Greenland). As our multi-locus phylogeny shows, the Hawaiian endemic Erinna H. Adams & A. Adams, 1855 clusters with the nominative subgenus. This renders Ladislavella s.l. paraphyletic (see also Aksenova et al. 2023). To maintain monophyletic taxa, we elevate both to the rank of full genus. However, the phylogenetic position of Erinna and the topology of the phylogenetic tree might change in the future, when the two other Hawaiian endemic taxa (i.e. Pseudisidora Thiele, 1931 and Pseudobulinus Kruglov & Starobogatov, 1993 ) are included in a molecular analysis. Currently, genetic data on these two taxa are unavailable.