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Page last updated
Wed 1 October 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

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Bivalvia | Sphaerioida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Euglesa

species Euglesa obtusalis (Lamarck, 1818): synonymy
     2 specimens + 18 Genbank vouchers

Cyclas obtusalis Lamarck, 1818
Lamarck, 1818. Hist. Natur. Anim. sans Vert. 5: 559.

Pisidium (Eupisidium) obtusaleZhadin (1965), Korniushin (1998)
Pisidium (Cyclocalyx) obtusaleClarke (1973), Falkner et al. (2001), Bank (2006), Voode (2017), Bespalaya et al. (2017)
Pisidium obtusaleBurch (1975), Kuiper et al. (1989), Korniushin et al. (2001), Taylor et al. (2007), Schultheiß et al. (2008), ... Múrria et al. (2020), Groh et al. (2020), Clewing et al. (2020), Saito et al. (2022), Clewing et al. (2022)
Pisidium (Euglesa) obtusaleKorniushin & Glaubrecht (2002)
Cyclocalyx obtusalisKantor et al. (2010)
Euglesa (Cyclocalyx) obtusaleVinarski & Kantor (2016)
Euglesa obtusalisPríe et al. (2021), Bespalaya et al. (2022), Prié et al. (2023)
Euglesa obtusaleBespalaya et al. (2021)
Euglesa (s.s.) obtusalisBespalaya et al. (2023)

Cyclas gibba Alder, 1831
Alder, 1831. Trans. Natur. Hist. Soc. Northumbld. Durham 1: 41.

Pisidium obtusaleHe & Zhuang (2013)

Cyclas ovalis Nilsson, 1832
Nilsson, 1832. Trans. Cambridge Phil. Soc. 4: ??.

Pisidium obtusaleHe & Zhuang (2013)

Pisidium dubrueili Baudon, 1872
Baudon, 1872. unknown publication: 30, pl. 3, figs. 1-4.

Cyclocalyx (s.s.) dubrueiliStarobogatov et al. (2004)
Cyclocalyx dubrueiliKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) dubrueiliVinarski & Kantor (2016)

Pisidium scholtzii Clessin, 1873
Clessin, 1873. Malak. Blatt. 20: 23, pl. 1, fig. 1.
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 540.
Clessin, 1874. Conch. Cab. 9(3): 18, pl. 2, figs. 1-3.

Corneocyclas (Cyclocalyx) scholtziDall (1903)
Pisidium obtusaleThiele (1934), IUCN (2011), Fauna Europaea (2012), He & Zhuang (2013)
Pisidium (Cyclocalyx) obtusaleClarke (1973)
Pisidium (Eupisidium) obtusaleKorniushin (1998)
Cyclocalyx (s.s.) scholtziStarobogatov et al. (2004)
Cyclocalyx scholtziiKantor et al. (2010)
Euglesa (Cyclocalyx) scholtziiVinarski & Kantor (2016)

Pisidium obtusale magnificum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 547.
Clessin, 1874. Conch. Cab. 9(3): 27.

Cyclocalyx (s.s.) magnificusStarobogatov et al. (2004)
Cyclocalyx magnificusKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) magnificaVinarski & Kantor (2016)

Pisidium obtusale solidum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1874. Conch. Cab. 9(3): 28.

Cyclocalyx (s.s.) solidusStarobogatov et al. (2004)
Cyclocalyx solidusKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) solidaVinarski & Kantor (2016)

Pisidium obtusale var. fragilis Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1874. Conch. Cab. 9(3): 28.

Cyclocalyx (s.s.) fragilisStarobogatov et al. (2004)
Cyclocalyx fragilisKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) fragilisVinarski & Kantor (2016)

Pisidium scholtzi var. lapponicum Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 540.
Clessin, 1874. Conch. Cab. 9(3): 19.

Pisidium obtusaleBurch (1975), He & Zhuang (2013)
Cyclocalyx (s.s.) lapponicusStarobogatov et al. (2004)
Cyclocalyx lapponicusKantor et al. (2010)
Euglesa (Cyclocalyx) lapponicaVinarski & Kantor (2016)

Pisidium obtusalastrum Woodward, 1921
Woodward, 1921. unknown publication: ??.

Pisidium obtusaleIUCN (2011), Fauna Europaea (2012)

Galileja lapponica var. cor Starobogatov & Streletzkaja, 1967
Starobogatov & Streletzkaja, 1967. Trudy Zool. Inst. 42: 251.

Cyclocalyx (s.s.) corStarobogatov et al. (2004)
Cyclocalyx corKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) corVinarski & Kantor (2016)

Euglesa (Cyclocalyx) chaunensis Prozorova, 1988
Prozorova, 1988. Zool. Zhur. 67(10): 1578, fig. 2.

Cyclocalyx (s.s.) chaunensisStarobogatov et al. (2004)
Cyclocalyx chaunensisKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) chaunensisVinarski & Kantor (2016)

Euglesa (Cyclocalyx) ovata Prozorova, 1988
Prozorova, 1988. Zool. Zhur. 67(10): 1579, fig. 3.

Cyclocalyx (s.s.) ovatusStarobogatov et al. (2004)
Cyclocalyx ovatusKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) ovataVinarski & Kantor (2016)

Euglesa (Cyclocalyx) angarensis Slugina et al., 1994
Slugina & Starobogatov in Slugina et al., 1994. Ruthenica 4(2): 136.

Cyclocalyx (s.s.) angarensisStarobogatov et al. (2004)
Cyclocalyx angarensisKantor et al. (2010)
Pisidium obtusaleHe & Zhuang (2013)
Euglesa (Cyclocalyx) angarensisVinarski & Kantor (2016)

Pisidium obtusale Brown, 1831
Brown, 1831. Edinb. J. Nat. & Geogr. 4: 412.

Pisidium obtusale Scholtz, 1853
Scholtz, 1853. Land- und Wassermoll. Schlesiens: 142. [in part]

Pisidium obtusale solidum Kantor et al., 2010
Kantor et al., 2010. Cat. Contin. Moll. Russia: 306.

Taxonomic History (since 1900)

Corneocyclas (Cyclocalyx) scholtziDall (1903)
Pisidium obtusaleThiele (1934), Burch (1975), Kuiper et al. (1989), Korniushin et al. (2001), Taylor et al. (2007), ... Múrria et al. (2020), Groh et al. (2020), Clewing et al. (2020), Saito et al. (2022), Clewing et al. (2022)
Pisidium (Eupisidium) obtusaleZhadin (1965), Korniushin (1998)
Pisidium (Cyclocalyx) obtusaleClarke (1973), Falkner et al. (2001), Bank (2006), Voode (2017), Bespalaya et al. (2017)
Pisidium (Euglesa) obtusaleKorniushin & Glaubrecht (2002)
Cyclocalyx (s.s.) dubrueiliStarobogatov et al. (2004)
Cyclocalyx (s.s.) scholtziStarobogatov et al. (2004)
Cyclocalyx (s.s.) magnificusStarobogatov et al. (2004)
Cyclocalyx (s.s.) solidusStarobogatov et al. (2004)
Cyclocalyx (s.s.) fragilisStarobogatov et al. (2004)
Cyclocalyx (s.s.) lapponicusStarobogatov et al. (2004)
Cyclocalyx (s.s.) corStarobogatov et al. (2004)
Cyclocalyx (s.s.) chaunensisStarobogatov et al. (2004)
Cyclocalyx (s.s.) ovatusStarobogatov et al. (2004)
Cyclocalyx (s.s.) angarensisStarobogatov et al. (2004)
Cyclocalyx obtusalisKantor et al. (2010)
Cyclocalyx dubrueiliKantor et al. (2010)
Cyclocalyx scholtziiKantor et al. (2010)
Cyclocalyx magnificusKantor et al. (2010)
Cyclocalyx solidusKantor et al. (2010)
Cyclocalyx fragilisKantor et al. (2010)
Cyclocalyx lapponicusKantor et al. (2010)
Cyclocalyx corKantor et al. (2010)
Cyclocalyx chaunensisKantor et al. (2010)
Cyclocalyx ovatusKantor et al. (2010)
Cyclocalyx angarensisKantor et al. (2010)
Euglesa (Cyclocalyx) obtusaleVinarski & Kantor (2016)
Euglesa (Cyclocalyx) dubrueiliVinarski & Kantor (2016)
Euglesa (Cyclocalyx) scholtziiVinarski & Kantor (2016)
Euglesa (Cyclocalyx) magnificaVinarski & Kantor (2016)
Euglesa (Cyclocalyx) solidaVinarski & Kantor (2016)
Euglesa (Cyclocalyx) fragilisVinarski & Kantor (2016)
Euglesa (Cyclocalyx) lapponicaVinarski & Kantor (2016)
Euglesa (Cyclocalyx) corVinarski & Kantor (2016)
Euglesa (Cyclocalyx) chaunensisVinarski & Kantor (2016)
Euglesa (Cyclocalyx) ovataVinarski & Kantor (2016)
Euglesa (Cyclocalyx) angarensisVinarski & Kantor (2016)
Euglesa obtusalisPríe et al. (2021), Bespalaya et al. (2022), Prié et al. (2023)
Euglesa obtusaleBespalaya et al. (2021)
Euglesa (s.s.) obtusalisBespalaya et al. (2023)

 
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