Taxonomic assessment of genetically-delineated species of radicine snails (Mollusca, Gastropoda, Lymnaeidae) Author Vinarski, Maxim V. Laboratory of Macroecology and Biogeography of Invertebrates, Saint-Petersburg State University, 7 / 9 Universitetskaya Emb., 199034, Saint-Petersburg, Russia & Omsk State University, 28 Adrianova Str., 644077, Omsk, Russia https://orcid.org/0000-0002-7644-4164 radix.vinarski@gmail.com Author Aksenova, Olga V. Laboratory of Macroecology and Biogeography of Invertebrates, Saint-Petersburg State University, 7 / 9 Universitetskaya Emb., 199034, Saint-Petersburg, Russia & N. Laverov Federal Center for Integrated Arctic Research, Ural Branch of the Russian Academy of Sciences, 23 Severnaya Dvina Emb., 163000, Arkhangelsk, Russia https://orcid.org/0000-0002-0817-7105 Author Bolotov, Ivan N. N. Laverov Federal Center for Integrated Arctic Research, Ural Branch of the Russian Academy of Sciences, 23 Severnaya Dvina Emb., 163000, Arkhangelsk, Russia & Northern (Arctic) Federal University, 17 Severnaya Dvina Emb., 163002, Arkhangelsk, Russia https://orcid.org/0000-0002-3878-4192 text Zoosystematics and Evolution 2020 96 2 577 608 http://dx.doi.org/10.3897/zse.96.52860 journal article http://dx.doi.org/10.3897/zse.96.52860 1860-0743-2-577 D4882E78D81B5FA394A6A156886835E4 B8CF4E84-1FEE-46F3-B275-BAFA6824902B 28. Bullastra cumingiana (L. Pfeiffer, 1845) Figs 8N ; 9P ; Table 3 Amphipeplea cumingiana Pfeiffer 1845 : 68. Amphipeplea cumingi Pfeiffer 1854-1860 : 5, pl. II, figs 3, 4. Bullastra velutinoides Bergh 1901 : 254, pl. 20, figs 22-34. Lymnaea cumingiana - Hubendick 1951 : 162, fig. 355. Bullastra cumingiana - Aksenova et al. 2018a : 4. TL. Philippines, island of Luzon, Naga, province of South Camerines. Probable syntypes. ZMB (see Vinarski 2016a for details). Hubendick (1951) provided a description of shell, radula and genital morphology of this peculiar species. By its almost globose shell, with extremely reduced spire and extended and reflected mantle border, B. cumingiana superficially resembles M. glutinosa ; however, the alleged phylogenetic affinity between the two snails has been rejected by Hubendick (1951) and Kruglov (2005) . Two specimens of B. cumingiana originated from Lake Sampaloc (Philippines, Luzon Island; LMBI collection) were dissected during this study. The structure of the copulatory apparatus is typical for radicines. Praeputium is enlarged and widened, its length is around twice that of the penis sheath length (see Fig. 8N ). Penis sheath is short and narrow. The ICA values of the two dissected individuals were 2.11 and 2.13. Both parts of the copulatory apparatus are light-coloured. B. cumingiana is endemic to the Philippine Islands ( Hubendick 1951 ).