original description
(of Cyclas nucleus Studer, 1820) Studer, S. (1820). Kurzes Verzeichnis der bis jetzt in unserm Vaterlande entdeckten Conchylien. Naturwissenschaftlicher Anzeiger der Allgemeinen Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften, 3 (11): 83-90; (12): 91-94. Bern [1 May; 1 June]. [reprinted as a separate work under the title: Systematisches Verzeichniss der bis jetzt bekannt gewordenen Schweizer-Conchylien. Bern (Stämpfli: 32 pp. > 5 April)]
page(s): 93 [details]
original description
(of Cyclas scaldiana Normand, 1844) Normand, N. A. J. (1844). Notice sur plusieurs nouvelles espèces de Cyclades découvertes dans les environs de Valenciennes. Paris; Valenciennes, A., 8 pp., plate 1. , available online at http://biodiversitylibrary.org/page/35730160
page(s): 5, figs 1-2 [details]
original description
(of Sphaerium galitzini Clessin, 1875) Clessin, S. (1875). Mollusken des Wolgagebietes. <em>Jahrbücher der Deutschen Malakozoologischen Gesellschaft.</em> 2: 36-42, pl. 2., available online at https://www.biodiversitylibrary.org/page/27002678
page(s): 40-41, pl. 2, fig. 6 [details]
original description
(of Sphaerium draparnaldi Clessin, 1873) Westerlund, C. A. (1873). <i>Fauna molluscorum terrestrium et fluviatilium Sveciæ, Norvegiæ et Daniæ. - Sveriges, Norges och Danmarks land- och sötvatten-mollusker</i>. II. <i>Sötvattenmollusker</i>. [1-3], i-v, 297-651 pp. Stockholm: Bonnier. , available online at https://www.biodiversitylibrary.org/page/13188948
page(s): 512 [details]
original description
(of Sphaerium galitzinianum Clessin, 1877) Clessin, S. (1874-1879). Die Familie der Cycladeen. In Abbildungen nach der Natur mit Beschreibungen. In Systematisches Conchylien-Cabinet von Martini und Chemnitz. 1-40, pl. 1-6 (1874), 41-48 (1875), 49-56 (1876), 57-160, pl. 7-30 (1877), 161-200, pl. 31-42 (1878), 201-283, pl. 43-46 (1879). Nürnberg. , available online at http://biodiversitylibrary.org/page/34337291
page(s): 88 [details]
additional source
Petkevičiūtė, R.; Stunžėnas, V.; Stanevičiūtė, G. (2018). Comments on species divergence in the genus Sphaerium (Bivalvia) and phylogenetic affinities of Sphaerium nucleus and S. corneum var. mamillanum based on karyotypes and sequences of 16S and ITS1 rDNA. <em>PLOS ONE.</em> 13(1): e0191427., available online at https://doi.org/10.1371/journal.pone.0191427 [details]
status source
Korniushin, A. (2001). Taxonomic revision of the genus Sphaerium sensu lato in the Palaearctic Region, with some notes on the North American species (Bivalvia: Spbaeriidae). <em>Archiv für Molluskenkunde.</em> 129(1-2): 77-122., available online at https://www.schweizerbart.de/papers/archmoll_alt/detail/129/88911/Taxonomic_revision_of_the_genus_Sphaerium_sensu_lato_in_the_Palaearctic_Region_with_some_notes_on_the_North_American_species_Bivalvia_Spbaeriidae [details] Available for editors [request]
From editor or global species database
Type locality Switzerland, Yverdonles-Bains (“Gegend von Yverdon”) [details]