original description
(of Bythinia (Digyreidum) servainiana var. caspica Westerlund, 1902) Westerlund, C. A. (1902). Malacologische Bemerkungen und Beschreibungen. <em>Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft.</em> 34 (1/2): 19-26; 34 (3/4): 35-47. Frankfurt am Main [15 February; 13 March]., available online at https://www.biodiversitylibrary.org/page/15598758
page(s): 45 [details]
basis of record
Vinarski, M. V.; Kantor, Yu. I. (2016). Analytical catalogue of fresh and brackish water molluscs of Russia and adjacent countries. A. N. Severtsov Institute of Ecology and Evolution of Russian Academy of Science, Moscow, 544 pp.
page(s): 206 [details] Available for editors [request]
additional source
Vinarski M.V., Nekhaev I.O., Glöer P., von Proschwitz T. (2013). Type materials of freshwater gastropod species described by C.A. Westerlund and accepted in current malacological taxonomy: a taxonomic and nomenclatorial study. <em>Ruthenica.</em> 23(2): 79-108.
page(s): 82, fig. 2, C [details]
additional source
Beriozkina, G.V., Levina, O.V. & Starobogatov, Ya.I. (1995). Revision of Bithyniidae from European Russia and Ukraine. <em>Ruthenica.</em> 5(1): 27-38. Moscow.
page(s): 36, fig. 5 F [details] Available for editors [request]
From editor or global species database
Type locality “Kaspisches Meer an der Ostseite” (eastern part of the Caspian See) [Westerlund, 1902: 45]. Beriozkina et al. [1995] contend that this taxon was described from the vicinity of Krasnovodsk (Turkmenia) [details]