| Page last updatedWed 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! 
					Search the database pages: 
 Publication Herrington (1962): taxonomic opinionspublication summary
 Complete CitationHerrington, H.B. 1962. A revision of the Sphaeriidae of North America. Miscellaneous Publications, Museum of Zoology, University of Michigan (118). 74 pp. Taxonomic OpinionsPisidium adamsi Prime, 1851 = Euglesa adamsii+ Pisidium affine Sterki, 1901
 + Pisidium sargenti Sterki, 1901
 + Pisidium sphaericum Sterki, 1912
 + Pisidium deflexum Sterki, 1922
 Pisidium aequilaterale [sic] Prime, 1851 = Euglesa equilateralis Pisidium amnica (Müller, 1774) = Pisidium amnicum Pisidium casertanum (Poli, 1791) = Euglesa casertana+ Pisidium cinereum Alder, 1838
 + Cyclas (Pisidium) abditum Haldeman, 1841
 + Cyclas minor Mighels & Adams, 1842
 + Pisidium steenbuchi Möller, 1842
 + Pisidium roseum Scholtz, 1843
 + Pisidium regulare Prime, 1852
 + Pisidium noveboracense Prime, 1858
 + Pisidium occidentale Newcomb, 1861
 + Pisidium politum Sterki, 1895
 + Pisidium randolphii Roper, 1896
 + Pisidium trapezoideum Sterki, 1896
 + Pisidium roperi Sterki, 1898
 + Pisidium streatori Sterki, 1901
 + Pisidium strengii Sterki, 1902
 + Pisidium ashmuni Sterki, 1903
 26 more...
 Pisidium casertanum (Poli, 1791) = Euglesa ventricosa Pisidium compressum Prime, 1851 = Euglesa compressa Pisidium conventus Clessin, 1877 = Conventus conventus+ Pisidium abyssorum Sterki, 1898
 + Pisidium hendersoni Sterki, 1923
 + Pisidium clessini Surbeck, 1899
 + Pisidium tornense Odhner, 1908
 + Pisidium pusillum B.B. Woodward, 1913
 Pisidium conventus Clessin, 1877 = Euglesa nitida Pisidium cruciatum Sterki, 1895 Pisidium dubium (Say, 1816)+ Cyclas (Phymesoda) equalis Rafinesque, 1820
 + Cyclas (Pisidium) abruptum Haldeman, 1841
 + Pisidium virginicum Prime, 1865
 Pisidium fallax Sterki, 1896 = Euglesa fallax+ Pisidium kirklandi Sterki, 1899
 Pisidium ferrugineum Prime, 1851 = Euglesa ferruginea+ Pisidium (Fossarina) hibernicum Westerlund, 1894
 + Pisidium medianum Sterki, 1899
 + Pisidium costatum Sterki, 1903
 + Pisidium vexum Sterki, 1916
 Pisidium ferrugineum Prime, 1851 = Euglesa parvula Pisidium henslowanum (Sheppard, 1825) = Euglesa henslowana+ Pisidium supinum Schmidt, 1850
 Pisidium henslowanum (Sheppard, 1825) = Euglesa supina Pisidium idahoense Roper, 1890 = Pisidium idahoensis Pisidium insigne Gabb, 1868 = Conventus insigne Pisidium lilljeborgi Clessin, 1886 = Euglesa lilljeborgii+ Pisidium scutellatum Sterki, 1896
 + Pisidium lilljeborgi form cristatum Sterki, 1928
 Pisidium milium Held, 1836 = Euglesa milium Pisidium nitidum Jenyns, 1832 = Euglesa nitida+ Pisidium contortum Prime, 1858
 + Pisidium pauperculum Sterki, 1896
 + Pisidium splendidulum Sterki, 1898
 + Pisidium handwerki Sterki, 1899
 + Pisidium tenuissimum Sterki, 1901
 + Pisidium minusculum Sterki, 1906
 + Pisidium glabellum Sterki, 1913
 + Pisidium lermondi Sterki, 1913
 + Pisidium latchfordi Sterki, 1916
 + Pisidium limpidum Sterki, 1922
 + Pisidium prognathum Sterki, 1922
 Pisidium obtusale Pfeiffer, 1821 = Euglesa ventricosa+ Pisidium ventricosum Prime, 1851
 + Pisidium rotundatum Prime, 1852
 + Pisidium vesiculare Sterki, 1896
 Pisidium obtusale Pfeiffer, 1821 = Euglesa rotundata Pisidium punctiferum (Guppy, 1867)+ Pisidium punctatum Sterki, 1895
 + Pisidium singleyi Sterki, 1898
 + Pisidium limatulum Sterki, 1905
 + Pisidium inornatum Sterki, 1911
 + Pisidium tenuilineatum Stelfox, 1918
 Pisidium punctiferum (Guppy, 1867) = Pisidium punctatum Pisidium punctiferum (Guppy, 1867) = Odhneripisidium tenuilineatum Pisidium subtruncatum Malm, 1855 = Euglesa subtruncata+ Pisidium marci Sterki, 1909
 + Pisidium overi Sterki, 1913
 + Pisidium apiculatum Sterki, 1922
 Pisidium ultramontanum Prime, 1865 = Euglesa ultramontana Pisidium variabile Prime, 1851 = Euglesa variabilis+ Pisidium cicer Prime, 1858
 + Pisidium decisum Sterki, 1922
 + Pisidium probum Sterki, 1923
 Pisidium walkeri Sterki, 1895 = Euglesa walkeri+ Pisidium walkeri var. mainense Sterki, 1898
 Sphaerium corneum (Linné, 1758) Sphaerium fabale (Prime, 1851) Sphaerium lacustre (Müller, 1774)+ Cyclas ryckholti Normand, 1844
 + Cyclas rosacea Prime, 1852
 + Cyclas jayensis Prime, 1852
 + Sphaerium lenticula Prime, 1862
 + Sphaerium raymondi Cooper, 1892
 + Musculium winkleyi Sterki, 1909
 + Musculium pusillum Sterki, 1910
 + Musculium declive Sterki, 1912
 Sphaerium nitidum Clessin in Westerlund, 1876+ Sphaerium uintaense Call, 1886
 + Sphaerium walkeri Sterki, 1901
 Sphaerium occidentale Prime, 1860+ Cyclas ovalis Prime, 1853
 Sphaerium partumeium (Say, 1822)+ Cyclas elevata Haldeman, 1841
 + Cyclas truncata Linsley, 1845
 + Sphaerium contractum Prime, 1865
 + Calyculina hodgsonii Sterki, 1902
 + Calyculina ferrissii Sterki, 1902
 + Musculium orbiculare Sterki, 1913
 Sphaerium partumeium (Say, 1822) = Sphaerium transversum Sphaerium patella (Gould, 1850)+ Sphaerium primeanum Clessin, 1878
 Sphaerium rhomboideum (Say, 1822) Sphaerium securis (Prime, 1851)+ Cyclas sphaerica Prime, 1853
 + Musculium parvum Sterki, 1909
 + Musculium australe Sterki, 1916
 Sphaerium striatinum (Lamarck, 1818)+ Cyclas triangularis Say, 1829
 + Cyclas staminea Conrad, 1834
 + Cyclas (Pisidium) dentata Haldeman, 1841
 + Cyclas flava Prime, 1852
 + Cyclas emarginata Prime, 1852
 + Cyclas acuminata Prime, 1852
 + Cyclas modesta Prime, 1852
 + Cyclas solidula Prime, 1852
 + Cyclas aurea Prime, 1852
 + Sphaerium vermontanum Prime, 1861
 + Sphaerium tumidum Baird, 1863
 + Sphaerium spokani Baird, 1863
 + Sphaerium lilycashense Baker, 1898
 + Sphaerium jalapensis Pilsbry, 1904
 + Sphaerium hendersoni Sterki, 1906
 5 more...
 Sphaerium striatinum (Lamarck, 1818) = Sphaerium triangulare Sphaerium striatinum (Lamarck, 1818) = Sphaerium jalapensis Sphaerium sulcatum (Lamarck, 1818) = Sphaerium simile+ Cyclas similis Say, 1817
 + Sphaerium crassum Sterki, 1901
 + Sphaerium lineatum Sterki, 1910
 + Sphaerium fallax Sterki, 1930
 Sphaerium transversum (Say, 1829)+ Sphaerium pallidum Gray, 1856
 + Sphaerium subtransversum Prime, 1860
 Sphaerium transversum (Say, 1829) = Sphaerium subtransversum |