Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae) Author Bespalaya, Yulia V. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation & Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Universitetskaya Emb. 7 - 9, 199034 Saint Petersburg, Russian Federation Author Vinarski, Maxim V. Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Universitetskaya Emb. 7 - 9, 199034 Saint Petersburg, Russian Federation Author Aksenova, Olga V. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Babushkin, Evgeniy S. Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Universitetskaya Emb. 7 - 9, 199034 Saint Petersburg, Russian Federation & Surgut State University, Lenina Ave., 1, 628403 Surgut, Russian Federation Author Gofarov, Mikhail Yu. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Kondakov, Alexander V. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Konopleva, Ekaterina S. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Kropotin, Alexander V. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Mabrouki, Youness Biotechnology, Conservation and Valorisation of Natural Resources Laboratory, Faculty of Sciences Dhar El Mehraz, Sidi Mohamed Ben Abdellah University, Fez. B. P. 1796, 30003 Fès-Atlas, Morocco Author Ovchankova, Nadezda B. Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Universitetskaya Emb. 7 - 9, 199034 Saint Petersburg, Russian Federation & Zoological Institute, Russian Academy of Sciences, Universitetskaya Emb. 1, 199034 Saint Petersburg, Russian Federation Author Palatov, Dmitry M. Laboratory of Macroecology & Biogeography of Invertebrates, Saint Petersburg State University, Universitetskaya Emb. 7 - 9, 199034 Saint Petersburg, Russian Federation & A. N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninsky Prt., 33, 119071 Moscow, Russian Federation Author Sokolova, Svetlana E. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Shevchenko, Alexander R. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Travina, Oksana V. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Taybi, Abdelkhaleq F. Mohammed Premier University, Multidisciplinary Faculty of Nador, Applied Biology and Biotechnology Research Team, B. P 300, 62700 Selouane, Morocco Author Soboleva, Alena A. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Zubrii, Natalia A. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation Author Bolotov, Ivan N. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Nikolsky Avenue 20, 163020 Arkhangelsk, Russian Federation text Zoological Journal of the Linnean Society 2024 2023-11-04 201 2 305 338 http://dx.doi.org/10.1093/zoolinnean/zlad139 journal article 10.1093/zoolinnean/zlad139 0024-4082 13220074 DC94015-12D0-42CB-B21E-F7C950E94EFDEuglesa Euglesa hinzi (Kuiper, 1975) ( Fig. 9F ) Pisidium hinzi Kuiper, 1975 : text 27–31, figs 1–6, 28, 30. Type series: Holotype : SMF No. 192849, and 10 paratypes ZIN , nos 1, 2 in the systematic catalogue. Type locality: Norway , ‘ Buetjörni (=Davggeluobal), 147 m NN, Flachsee (tiefste Stelle 9 m), Varangerhalbiusel im NO Norwegens’ . Material examined: Russia: Yakutia , Ust-Kuiga , Yana River Basin , VIII.2019 , Zubrii leg., one specimen (lot no. RMBH MSph-572- 2); Gydan Peninsula VII.2017 , Sokolova & Shevchenko leg., 25 specimens (lot nos RMBH MSph-361, MSph-366, MSph-374), VashutkinylakesVIII.2016, Aksenova , Aksenov , Bespaliy , Sokolova & Shevchenko leg., one specimen (lot no. RMBH , MSph-161) . Description: The mean shell length ± SD is 2.4 ± 0.2 mm ( N = 15), shell is rounded in shape ( Fig. 9F ). The beaks are rounded, slightly prominent, offset to the posterior edge of the valves ( Fig. 10A ). The cardinal tooth of the right valve is curved, with a branched posterior end. The cardinal teeth of the left valve are slightly curved, almost parallel to each other ( Fig. 10A ). Distribution: Northern Europe and Siberia. Comments: We analysed the original descriptions and type specimens of some nominal species described from Eurasian localities where our speciments were found or from closely situated localities: Euglesa jacutica (Starobogatov & Streletzkaja, 1967) , Euglesa jamalensis Dolgin & Starobogatov, 1973 , Euglesa johanseni Dolgin & Korniushin, 1994 , Euglesa hinzi Kuiper, 1975 , and Euglesa obensis Starobogatov, Anistratenko & Dolgin, 1990 (Supporting Information, Fig. S1 ). The molecular genetic data (16S rRNA sequences) obtained have no analogues in GenBank, with Euglesa parvula (Clessin in Westerlund, 1873) being the closest ally. Morphologically, nominal species in this group have similar conchological features with the E. hinzi group, i.e. the section Hinziana Dolgin & Korniushin, 1993 ( Korniushin 1996 ). Thus, according to morphological features and molecular-genetic analysis, this species shoud be classified as E. hinzi ( Fig. 9F ). The species status of E. jacutica , E. jamalensis , E. johanseni , and E. obensis needs to be clarified and cannot be solved here, since molecular studies of the topotypes of these species are necessary.