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Page last updated
Thu 3 September 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 | Sphaeriida | Sphaerioidea | Sphaeriidae | Sphaeriinae

genus Euglesa Jenyns, 1832: synonymy
     88 Recent valid species (88 total species)

Euglesa Jenyns, 1832
‘Leach MS’ Jenyns, 1832. Trans. Cambridge Phil. Soc. 4: 302.

Galileja Costa, 1840
Costa, 1839. Corrisp. Zool.: 181.
Costa, 1840. Fauna Siciliana Molluschi: 1, pl. 1, figs. 2a, A.B.
Type species: Galileja tenebrosa Costa, 1839 (monotypy) = Euglesa pulchella

Euglesia Leach, 1852
Leach, 1852. Syn. Moll. Gr. Brit.: 291.
(error for Euglesa Jenyns, 1832)
Type species: Tellina henslowana Sheppard, 1825 = Euglesa henslowana

Cycladina Clessin, 1871
Clessin, 1871. Malak. Blatt. 18: 189.
(homonym of Latreille, 1827; Cantraine, 1835 [both Mollusca])
Type species: Pisidium nitidum Jenyns, 1832 = Euglesa nitida

Rivulina Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 532.
(homonym of Fleuriau de Belleville, 1820; Lea, 1851 [both Mollusca])
Type species: Pisidium supinum Schmidt, 1850 = Euglesa supina

Fossarina Westerlund, 1873
Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 535.
(homonym of Adams & Angas, 1863 [Gastro.]; renamed Clessinia Piaget, 1913)
Type species: Pisidium obtusale Pfeiffer, 1821 = Euglesa ventricosa

Casertiana Servain, 1888
Servain, 1888. Bull. Soc. Malac. France 5: 313.
Fagot, 1892. Bull. Soc. Ramond 27: 35.

Henslowiana Servain, 1888
Servain, 1888. Bull. Soc. Malac. France 5: 314.
Fagot, 1892. Bull. Soc. Ramond 27: 151, 36.
Type species: Tellina henslowana Sheppard, 1825 = Euglesa henslowana

Pusillana Fagot, 1892
Fagot, 1892. Bull. Soc. Ramond 27: 148, 33.
Type species: Tellina pusilla Gmelin, 1791 = Euglesa casertana

Roseana Fagot, 1892
Fagot, 1892. Bull. Soc. Ramond 27: 149.
Type species: Pisidium roseum Scholtz, 1843 = Euglesa casertana

Cyclocalyx Dall, 1903
Dall, 1903. Proc. Biol. Soc. Wash. 16: 7.
Type species: Pisidium scholtzii Clessin, 1873 = Euglesa obtusalis

Cymatocyclas Dall, 1903
Dall, 1903. Proc. Biol. Soc. Wash. 16: 7.
Type species: Pisidium compressum Prime, 1852 = Euglesa compressa

Cymatocylas Dall, 1903
Dall, 1903. Proc. Biol. Soc. Wash. 16: 7.
Type species: Pisidium compressum Prime, 1852 = Euglesa compressa

Tropidocyclas Dall, 1903
Dall, 1903. Proc. Biol. Soc. Wash. 16: 7.
Type species: Tellina henslowana Sheppard, 1825 = Euglesa henslowana

Galileja B.B. Woodward, 1913
‘Costa’ of Authors.
B.B. Woodward, 1913. Cat. Brit. Pisidium of the BMNH: 2.
(reference to Galileja Costa, 1840)
Type species: Cardium casertanum Poli, 1791 = Euglesa casertana

Clessinia Piaget, 1913
Piaget, 1913. J. de Conch. 60: 224.
(homonym of Doering, 1874 [Gastrop.]; new name for Fossarina Westerlund, 1873; renamed Cletella Strand, 1928)
Type species: Pisidium obtusale Pfeiffer, 1821 = Euglesa ventricosa

Pseudeupera Germain, 1913
Germain, 1913. Bull. Mus. Nation. Hist. Natur. 19: 295.
(intro'd as sub-gen. of Pisidium Pfeiffer, 1821)
Type species: Pisidium (Eupera) landeroini Germain, 1909 = Euglesa subtruncata

Fontinalina Sterki, 1918
Sterki, 1918. Ann. Carnegie Mus. 10: 473.
Type species: Cyclas fontinalis Draparnaud, 1806 = Euglesa casertana

Eupisidium Odhner, 1921
Odhner, 1921. J. of Conch. 16: 222.
Type species: Pisidium personatum Malm, 1855 = Euglesa personata

Cletella Strand, 1928
Strand, 1928. Arch. Naturg. 92: 68.
(new name for Clessinia Piaget, 1913)
Type species: Pisidium obtusale Pfeiffer, 1821 = Euglesa ventricosa

Australpera Iredale, 1943
Iredale, 1943. Austral. Zool. 10: 196.
Type species: Pisidium etheridgii E.A. Smith, 1882 = Euglesa etheridgii

Afropisidium Kuiper, 1962
Kuiper, 1962. J. de Conch. 102: 55.
(intro'd as sub-gen. of Pisidium Pfeiffer, 1821)
Type species: Pisidium lepus Kuiper, 1957 (orig. desig.) = Euglesa pirothi

Arcteuglesa Pirogov & Starobogatov, 1974
Pirogov & Starobogatov, 1974. Zool. Zhur. 53(9): 328.
Type species: Pisidium lilljeborgii Esmark & Hoyer, 1886 = Euglesa lilljeborgii

Cingulipisidium Pirogov & Starobogatov, 1974
Pirogov & Starobogatov, 1974. Zool. Zhur. 53(9): 328.
Type species: Pisidium nitidum Jenyns, 1832 = Euglesa nitida

Costopisidium Pirogov & Starobogatov, 1974
Pirogov & Starobogatov, 1974. Zool. Zhur. 53(9): 328.
Type species: Pisidium nitidum var. crassa Stelfox, 1918 = Euglesa nitida

Tetragonocyclas Pirogov & Starobogatov, 1974
Pirogov & Starobogatov, 1974. Zool. Zhur. 53(9): 328.
Type species: Pisidium milium Held, 1836 = Euglesa milium

Hiberneuglesa Dolgin, 1983
Starobogatov in Dolgin, 1983. unknown publication: ??.
Type species: Pisidium (Fossarina) hibernicum Westerlund, 1894 = Euglesa parvula

Pulchelleuglesa Dolgin, 1983
Starobogatov in Dolgin, 1983. unknown publication: ??.
Type species: Pisidium pulchellum Jenyns, 1832 = Euglesa pulchella

Pseudosphaerium Korniushin, 1990
Korniushin, 1990. unknown publication: ??.
Type species: Pisidium milium var. pseudosphaerium Favre, 1927 = Euglesa pseudosphaerium

Potamopisidium Korniushin, 1991
Korniushin, 1991. Zool. Zhur. 70(4): 16.
(intro'd as sub-gen. of Cingulipisidium Pirogov & Starobogatov, 1974)
Type species: Cingulipisidium likharevi Korniushin, 1991 = Euglesa casertana

Baicalipisidium Slugina et al., 1994
Slugina & Starobogatov in Slugina et al., 1994. Ruthenica 4(2): 142.
Type species: Pisidium raddei Dybowski, 1902 = Euglesa raddei

Hinziana Dolgin & Korniushin, 1994
Dolgin & Korniushin, 1994. Zool. Zhur. 73(12): 17.
(intro'd as sub-gen. of Cyclocalyx Dall, 1903)
Type species: Pisidium hinzi Kuiper, 1975 = Euglesa hinzi

Amurohenslowiana Korniushin, 1996
Korniushin, 1996. Pisid. Palaearctic: 100.
(intro'd as sub-gen. of Henslowiana Servain, 1888)
Type species: Pisidium chankense Zhadin, 1952 = Euglesa chankensis

Amuriana Prozorova et al., 1996
Prozorova et al., 1996. Zool. Zhur. 75(9): 1321.
(intro'd as sub-gen. of Amurohenslowiana Korniushin, 1996)
Type species: Pisidium chankense Zhadin, 1952 = Euglesa chankensis

Amureuglesa Korniushin, 1996
Korniushin, 1996. Pisid. Palaearctic: 133.
Type species: Euglesa khurbaensis Zatravkin, 1987 = Euglesa khurbaensis

Supiniana Korniushin, 1996
Korniushin, 1996. Pisid. Palaearctic: 97.
Type species: Pisidium supinum Schmidt, 1850 = Euglesa supina

Englesia Prime, 1852
‘Leach’ Prime, 1852. Boston J. Nat. Hist. 6(3): 348.
(error for Euglesia Leach, 1852)

Glacipisum Iredale, 1943
Iredale, 1943. Austral. Zool. 10: 197. [nomen nudum]
Type species: Glacipisum kosciusko Iredale, 1943 = Euglesa kosciusko

Baikalipisidium Korniushin, 1998
Korniushin, 1998. Malac. Review Bivalvia 7: 81.
(error for Baicalipisidium Slugina et al., 1994)
Type species: Pisidium raddei Dybowski, 1902 = Euglesa raddei

Cingilipisidium Vinarski & Kantor, 2016
‘Pirogov & Starobogatov’ Vinarski & Kantor, 2016. Analyt. Cat. Fr. Brack. Moll. Russia: 120.
(error for Cingulipisidium Pirogov & Starobogatov, 1974)

Taxonomic History (since 1900)

Pisidium — Martens (1900), Pilsbry (1904), Annandale (1918), Annandale & Prashad (1921), Pallary (1921), ... Kondakov et al. (2020), Saito et al. (2022), Clewing et al. (2022), Czaja et al. (2023), Wu et al. (2023)
Corneocyclas (s.s.) — Dall (1903)
Corneocyclas (Tropidocyclas) — Dall (1903)
Corneocyclas (Cymatocyclas) — Dall (1903)
Corneocyclas (Cyclocalyx) — Dall (1903)
Pisidium (Fossarina) — Pallary (1909)
Pisidium (Fluminina) — Pallary (1921)
Sphaerium — Pilsbry & Bequaert (1927), Ponder (1964)
Pisidium (Eupisidium) — Mori (1938), Mandahl-Barth (1938), van Benthem Jutting (1953), van Benthem Jutting (1955), Zhadin (1965), Subba Rao (1989), Korniushin (1998)
Pisidium (Afropisidium) — Kuiper (1962), Kuiper (1983), Subba Rao (1989), B.J. Smith (1992), Korniushin (2000), Korniushin & Glaubrecht (2002)
Pisidium (Speleopisidium) — Zhadin (1965)
Pisidium (Cyclocalyx) — Clarke (1973), Burch (1975), Cooley & Ó Foighil (2000), Falkner et al. (2001), Bank (2006), Mackie (2007), Voode (2017), Bespalaya et al. (2017), Fuentealba-Jara et al. (2017)
Pisidium (s.s.) — Brandt (1974), Subba Rao (1989), B.J. Smith (1992)
Pisidium (Odhneripisidium) — Subba Rao (1989)
Pisidium (Euglesa) — Korniushin (2000), Falkner et al. (2001), Korniushin & Glaubrecht (2002), Bank (2006), Nesemann et al. (2007)
Pisidium (Henslowiana) — Falkner et al. (2001)
Pisidium (Cingulipisidium) — Falkner et al. (2001), Bank (2006)
Pisidium (Pseudeupera) — Falkner et al. (2001)
Pisidium (Hiberneuglesa) — Falkner et al. (2001)
Cyclocalyx — Lee & Ó Foighil (2003), Kantor et al. (2010)
Euglesa (Casertiana) — Starobogatov et al. (2004), Bespalaya et al. (2023)
Cyclocalyx (s.s.) — Starobogatov et al. (2004)
Henslowiana (s.s.) — Starobogatov et al. (2004)
Cingulipisidium (s.s.) — Starobogatov et al. (2004)
Pulchelleuglesa — Starobogatov et al. (2004), Kantor et al. (2010)
Tetragonocyclas — Starobogatov et al. (2004), Kantor et al. (2010)
Euglesa (Potamopisidium) — Starobogatov et al. (2004)
Roseana — Starobogatov et al. (2004), Kantor et al. (2010)
Henslowiana (Supiniana) — Starobogatov et al. (2004)
Pseudeupera — Starobogatov et al. (2004), Slugina (2006), Kantor et al. (2010)
Euglesa (s.s.) — Starobogatov et al. (2004), Vinarski & Kantor (2016), Bespalaya et al. (2023)
Hiberneuglesa — Starobogatov et al. (2004), Kantor et al. (2010)
Henslowiana (Arcteuglesa) — Starobogatov et al. (2004)
Cingulipisidium (Costopisidium) — Starobogatov et al. (2004)
Pseudosphaerium — Starobogatov et al. (2004), Kantor et al. (2010)
Henslowiana (Amurohenslowiana) — Starobogatov et al. (2004)
Cyclocalyx (Hinziana) — Starobogatov et al. (2004)
Amureuglesa — Starobogatov et al. (2004), Kantor et al. (2010)
Pisidium (Tropidocyclas) — Bank (2006)
[Conventus] C. — Slugina (2006)
[Euglesa] E. — Slugina (2006)
Henslowiana — Slugina (2006), Kantor et al. (2010)
Euglesa — Kantor et al. (2010), IUCN (2011), Vinarski & Kantor (2016), Mouthon & Forcellini (2017), Vinarski et al. (2020), ... Czaja et al. (2023), Prié et al. (2023), Bespalaya et al. (2023), Wu et al. (2023), Huang et al. (2025)
Cingulipisidium — Kantor et al. (2010)
Conventus — Kantor et al. (2010)
Neopisidium — Kantor et al. (2010)
Pisidium (Neopisidium) — Jeong et al. (2015)
Euglesa (Cyclocalyx) — Vinarski & Kantor (2016), Mouthon & Forcellini (2017)
Euglesa (Henslowiana) — Vinarski & Kantor (2016), Bespalaya et al. (2023)
Euglesa (Cingilipisidium) [sic] — Vinarski & Kantor (2016)
Euglesa (Pulchelleuglesa) — Vinarski & Kantor (2016)
Euglesa (Tetragonocyclas) — Vinarski & Kantor (2016)
Euglesa (Roseana) — Vinarski & Kantor (2016)
Euglesa (Pseudeupera) — Vinarski & Kantor (2016), Bespalaya et al. (2023)
Euglesa (Hiberneuglesa) — Vinarski & Kantor (2016), Bespalaya et al. (2023)
Euglesa (Conventus) — Vinarski & Kantor (2016)
Euglesa (Pseudosphaerium) — Vinarski & Kantor (2016)
Euglesa (Amureuglesa) — Vinarski & Kantor (2016), Bespalaya et al. (2023)
Afropisidium — Sahidin et al. (2021)
Euglesa (Cingulipisidium) — Bespalaya et al. (2023)

 
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