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

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Publication Watters et al. (2009): taxonomic opinions
     publication summary

Complete Citation

Watters, G.T., M.A. Hoggarth & D.H. Stansbery. 2009. The Freshwater Mussels of Ohio. 421 pp.

Taxonomic Opinions

Actinonaias ligamentina carinata (Barnes, 1823) = Ortmanniana ligamentina
+ Actinonaias carinata orbis Morrison, 1942

Actinonaias ligamentina ligamentina (Lamarck, 1819) = Ortmanniana ligamentina
+ Unio crassus Say, 1817
+ Lampsilis (sec. Eurynia) ligamentina var. gibbus Simpson, 1900
+ Unio tecomensis de Gregorio, 1914

Actinonaias ligamentina ligamentina (Lamarck, 1819) = Mesonaias tampicoensis

Alasmidonta marginata Say, 1818
+ Unio rugulosus Wood, 1828
+ Decurambis scriptum Rafinesque, 1831
+ Alasmodonta truncata Lea, 1836
+ Margaritana marginata Küster, 1862
+ Margaritana marginata var. truncata B.H. Wright, 1898
+ Alasmidonta (Decurambis) marginata susquehannae Ortmann, 1919
+ Alasmidonta (Decurambis) marginata variabilis F.C. Baker, 1928
+ Unio calceolus f.a sciotincola de Gregorio, 1914

Alasmidonta viridis (Rafinesque, 1820)
+ Unio calceolus Lea, 1828
+ Lasmigona viridis Rafinesque, 1831
+ Lasmigona viridis var. chloris Rafinesque, 1831
+ Lasmigona viridis var. radiata Rafinesque, 1831
+ Lasmigona viridis var. fuscata Rafinesque, 1831
+ Alasmodonta truncata Conrad, 1834
+ Margaritana deltoidea Lea, 1838
+ Calceola angulata Swainson, 1840
+ Margaritana minor Lea, 1845
+ Alasmidonta (Pressodonta) calceolus magnalacustris F.C. Baker, 1928
+ Alasmidonta (Pressodonta) calceolus danielsi F.C. Baker, 1928

Alasmidonta viridis (Rafinesque, 1820) = Pressodonta viridis

Amblema plicata perplicata (Conrad, 1841) = Amblema plicata

Amblema plicata plicata (Say, 1817) = Amblema plicata
+ Unio peruviana Lamarck, 1819
+ Unio rariplicata Lamarck, 1819
+ Amblema costata Rafinesque, 1820
+ Unio crassus Barnes, 1823
+ Unio gigantea Lea, 1838
+ Unio hippopoeus Lea, 1845
+ Unio hippopaeus Lea, 1852
+ Unio pearlensis Conrad, 1855
+ Unio heros Küster, 1855
+ Unio brazosensis Lea, 1868
+ Unio lincecumii Lea, 1868
+ Unio pauciplicatus Lea, 1872
+ Unio quintardii Cragin, 1887
+ Unio lincecurei Paetel, 1890
+ Unio pilsbryi Marsh, 1891
1 more...

Anodonta suborbiculata Say, 1831 = Utterbackiana suborbiculata

Anodontoides ferussacianus (Lea, 1834)
+ Anodonta buchanensis Lea, 1838
+ Anodonta subcylindracea Lea, 1838
+ Anodonta argentea Lea, 1840
+ Anodonta ferruginea Lea, 1840
+ Anodon plicatus Haldeman, 1842
+ Anodonta oblita Lea, 1852
+ Anodonta modesta Lea, 1857
+ Anodon subcylindracea Sowerby, 1867
+ Anodonta subcilindracea de Gregorio, 1914
+ Anodonta ferussaceana de Gregorio, 1914
+ Anodontoides birgei F.C. Baker, 1923

Anodontoides ferussacianus (Lea, 1834) = Anodontoides denigratus

Arcidens confragosus (Say, 1829)
+ Arcidens confragosa jacintoensis Strecker, 1931

Cumberlandia monodonta (Say, 1829)
+ Unio soleniformis Lea, 1831

Cyclonaias tuberculata (Rafinesque, 1820)
+ Unio verrucosus Barnes, 1823
+ Unio tuberculosus Valenciennes, 1827
+ Unio verrucosus purpureus Hildreth, 1828
+ Unio graniferus Lea, 1838
+ Quadrula (sec. Rotundaria) granifera var. pusilla Simpson, 1900
+ Plethobasus cooperianus Utterback, 1915
+ Quadrula (Cyclonaias) tuberculata utterbackiana Frierson, 1927

Cyprogenia stegaria (Rafinesque, 1820)
+ Obovaria stegaria var. tuberculata Rafinesque, 1820
+ Unio irroratus Lea, 1828
+ Unio stegarius Say, 1834
+ Cyprogenia irrorata var. pusilla Simpson, 1900

Ellipsaria lineolata (Rafinesque, 1820)
+ Obliquaria (Plagiola) depressa Rafinesque, 1820
+ Obliquaria (Ellipsaria) ellipsaria Rafinesque, 1820
+ Unio securis Lea, 1829
+ Unio compressus Rafinesque, 1831
+ Unio lineolatus Say, 1834

Elliptio complanata (Lightfoot, 1786)

Elliptio crassidens (Lamarck, 1819)
+ Unio (Elliptio) nigra Rafinesque, 1820
+ Unio (Elliptio) nigra var. fusca Rafinesque, 1820
+ Unio (Elliptio) nigra var. maculata Rafinesque, 1820
+ Unio cuneatus Barnes, 1823
+ Obliquaria (Aximedia) venus Rafinesque, 1831
+ Unio discus Sowerby, 1868
+ Unio crassus Sowerby, 1868
+ Unio lehmanii S.H. Wright, 1897
+ Unio danielsii B.H. Wright, 1899
+ Unio polymorphus B.H. Wright, 1899
+ Elliptio pachyodon Olson & Harbison, 1953

Elliptio crassidens (Lamarck, 1819) = Elliptio monroensis

Elliptio crassidens (Lamarck, 1819) = Elliptio occulta

Elliptio dilatata (Rafinesque, 1820) = Eurynia dilatata
+ Unio nasuta Lamarck, 1819
+ Obliquaria (Ellipsaria) sinuata Rafinesque, 1820
+ Unio mucronatus Barnes, 1823
+ Unio gibbosus Barnes, 1823
+ Obliquaria violacea Rafinesque, 1831
+ Bariosta fulvus Rafinesque, 1831
+ Obliquaria bicolor Rafinesque, 1831
+ Unio euliratus Rafinesque, 1831
+ Unio dilatatus Say, 1834
+ Unio arctior Lea, 1838
+ Unio stonensis Lea, 1840
+ Unio gibbosus var. armathwaitensis B.H. Wright, 1898
+ Unio (sec. Elliptio) gibbosus var. delicatus Simpson, 1900
+ Unio propeverutus de Gregorio, 1914
+ Elliptio dilatata var. subgibbosa Utterback, 1915
1 more...

Epioblasma flexuosa (Rafinesque, 1820)
+ Obliquaria (Quadrula) flexuosa var. bullata Rafinesque, 1820
+ Unio foliatus Hildreth, 1828

Epioblasma lewisi (Walker, 1910) = Epioblasma lewisii

Epioblasma obliquata obliquata (Rafinesque, 1820) = Epioblasma obliquata
+ Unio ridibundus Say, 1829
+ Unio pectitus Conrad, 1854
+ Unio stewardsonii var. stewensoni de Gregorio, 1914
+ Unio propesulcatus de Gregorio, 1914
+ Unio propeculcatus Parmalee & Bogan, 1998

Epioblasma obliquata perobliqua (Conrad, 1836) = Epioblasma perobliqua

Epioblasma personata (Say, 1829)
+ Unio pileus Lea, 1831
+ Unio capillaris Lea, 1834

Epioblasma phillipsii (Conrad, 1835) = Epioblasma cincinnatiensis
+ Unio cincinnatiensis Lea, 1840

Epioblasma phillipsii (Conrad, 1835) = Obliquaria reflexa

Epioblasma torulosa rangiana (Lea, 1838) = Epioblasma rangiana
+ Epioblasma biloba Rafinesque, 1831
+ Truncilla (Scalenaria) sulcata var. delicata Simpson, 1900

Epioblasma torulosa torulosa (Rafinesque, 1820) = Epioblasma torulosa
+ Amblema torulosa var. angulata Rafinesque, 1820
+ Amblema gibbosa Rafinesque, 1820
+ Amblema gibbosa var. olivacea Rafinesque, 1820
+ Amblema gibbosa var. radiata Rafinesque, 1820
+ Amblema gibbosa var. difformis Rafinesque, 1820

Epioblasma triquetra (Rafinesque, 1820)
+ Unio triangularis Barnes, 1823
+ Unio cuneatus Swainson, 1823
+ Unio formosus Lea, 1831
+ Unio triangularis var. pergibosus de Gregorio, 1914
+ Unio triangularis var. longiusculus de Gregorio, 1914

Fusconaia ebena (Lea, 1831) = Reginaia ebenus
+ Unio obliqua Ferussac, 1835
+ Amblema antrosa Rafinesque, 1820
+ Obovaria pachostea Rafinesque, 1820
+ Obovaria obovalis Rafinesque, 1820
+ Unio obovalis Say, 1834
+ Unio (s.s.) mytiloides Swainson, 1840

Fusconaia flava (Rafinesque, 1820)
+ Obliquaria (Sintoxia) lateralis Rafinesque, 1820
+ Unio undatus Barnes, 1823
+ Unio rubiginosus Lea, 1829
+ Unio trigonus Lea, 1831
+ Unio undatus Conrad, 1834
+ Unio flavus Conrad, 1837
+ Unio pilaris Reeve, 1865
+ Unio triangularis Küster, 1852
+ Fusconaia selecta Wheeler, 1914
+ Fusconaia flava var. parvula Grier, 1918
+ Fusconaia undata trigonoides Utterback, 1915
+ Fusconaia undata wagneri F.C. Baker, 1928
+ Unio validus var. continuus de Gregorio, 1914

Fusconaia subrotunda lesueuriana (Lea, 1840) = Fusconaia subrotunda

Fusconaia subrotunda subrotunda (Lea, 1831) = Fusconaia subrotunda
+ Obliquaria (Rotundaria) subrotunda var. maculata Rafinesque, 1820
+ Unio kirtlandianus Lea, 1834
+ Unio personatus Conrad, 1834
+ Unio politus Conrad, 1837
+ Unio kirklandianus Lea, 1838
+ Fusconaja [sic] subrotunda leucogona Ortmann, 1913

Glebula rotundata (Lamarck, 1819)
+ Unio suborbiculata Lamarck, 1819
+ Unio glebulus Say, 1831
+ Unio subglobosus Lea, 1834
+ Unio grandensis Conrad, 1855

Glebula rotundata (Lamarck, 1819) = Cyrtonaias berlandierii

Hemistena lata (Rafinesque, 1820)
+ Unio dehiscens Say, 1829
+ Unio oriens Lea, 1831
+ Odatelia radiata Rafinesque, 1832
+ Unio (Sayunio) dehiscens var. oriensopsis de Gregorio, 1914

Lampsilis abrupta (Say, 1831)
+ Toxolasma cyclips Rafinesque, 1831
+ Toxolasma cyclips var. fuscata Rafinesque, 1831
+ Toxolasma cyclips var. lutescens Rafinesque, 1831
+ Unio cyclips Ferussac, 1835
+ Unio crassus Conrad, 1836
+ Unio orbiculatus Hildreth, 1828

Lampsilis abrupta (Say, 1831) = Obovaria subrotunda

Lampsilis cardium Rafinesque, 1820
+ Unio ventricosus Barnes, 1823
+ Unio occidens Lea, 1829
+ Unio subovatus Lea, 1831
+ Unio cardium Conrad, 1834
+ Unio lenis Conrad, 1838
+ Unio ovatus Deshayes, 1839
+ Unio canadensis Lea, 1857
+ Unio dolabraeformis Sowerby, 1867
+ Unio latissimus Sowerby, 1868
+ Lampsilis ventricosa cohongoronta Ortmann, 1912
+ Lampsilis (s.s.) ventricosa var. lurida Simpson, 1914
+ Lampsilis ventricosa perglobosa F.C. Baker, 1928
+ Lampsilis ventricosa winnebagoensis F.C. Baker, 1928

Lampsilis fasciola Rafinesque, 1820
+ Unio multiradiatus Lea, 1829
+ Unio fasciolus Say, 1834
+ Unio perradiatus Lea, 1858
+ Unio altilis Reeve, 1865
+ Unio perovalis Sowerby, 1866

Lampsilis ovata (Say, 1817)

Lampsilis radiata luteola (Lamarck, 1819) = Lampsilis radiata
+ Unio siliquoideus Barnes, 1823
+ Unio inflatus Barnes, 1823
+ Unio childreni Hanley, 1843
+ Unio siliquoides Küster, 1848
+ Unio hydianus Küster, 1861
+ Unio distans J.G. Anthony, 1865
+ Unio affinis Sowerby, 1868
+ Unio multiradiatus Sowerby, 1868
+ Unio superiorensis Marsh, 1897
+ Lampsilis siliquoidea pepinensis F.C. Baker, 1927
+ Lampsilis siliquoidea chadwicki F.C. Baker, 1928

Lampsilis radiata luteola (Lamarck, 1819) = Lampsilis siliquoidea

Lampsilis rafinesqueana Frierson, 1927
+ Actinonaias carinata carinata Murray & Leonard, 1962

Lampsilis teres (Rafinesque, 1820)
+ Unio anodontoides Lea, 1831
+ Unio oriens Sowerby, 1868
+ Lampsilis anodontoides F.C. Baker, 1898
+ Lampsilis fallaciosus Smith, 1899
+ Unio floridensis Lea, 1852

Lampsilis teres (Rafinesque, 1820) = Lampsilis floridensis

Lasmigona complanata (Barnes, 1823) = Pterosyna complanata
+ Unio gigas Swainson, 1824
+ Unio katherinae Lea, 1838
+ Alasmodon complanatus Sowerby, 1839
+ Complanaria gigas Swainson, 1840

Lasmigona complanata alabamensis Clarke, 1985 = Pterosyna alabamensis

Lasmigona compressa (Lea, 1829) = Platynaias compressa
+ Unio alasmodontina Lea, 1829
+ Unio compressus var. plebius C.B. Adams, 1842
+ Complanaria alasmodontina Stimpson, 1851
+ Margaron (Unio) pressus Lea, 1852
+ Unio compressa var. lindus de Gregorio, 1914

Lasmigona costata (Rafinesque, 1820)
+ Alasmodonta rugosa Barnes, 1823
+ Lasmigona rugosa Rafinesque, 1831
+ Amblasmodon hians Rafinesque, 1831
+ Alasmodonta hians Ferussac, 1835
+ Lasmigona costata var. eriganensis Grier, 1918
+ Lasmigona costata nuda F.C. Baker, 1928
+ Lasmigona costata pepinensis F.C. Baker, 1928

Lasmigona subviridis (Conrad, 1835) = Platynaias subviridis
+ Unio viridis Conrad, 1835
+ Unio tappanianus Lea, 1838
+ Unio hyalinus Lea, 1845
+ Unio tappianus Catlow & Reeve, 1845
+ Unio pertenuis Lea, 1863

Leptodea fragilis (Rafinesque, 1820) = Potamilus fragilis
+ Unio gracilis Barnes, 1823
+ Unio planus Barnes, 1823
+ Unio (Niaa) atrata Swainson, 1823
+ Mya plana Eaton, 1826
+ Lasmonos fragilis Rafinesque, 1831
+ Lampsilis simpsoni Ferriss, 1900
+ Unio leptodea var. planus Jay, 1850
+ Lampsilis gracilis lacustris F.C. Baker, 1922

Leptodea leptodon (Rafinesque, 1820) = Potamilus leptodon
+ Anodon purpurascens Swainson, 1823
+ Unio velum Say, 1829
+ Symphynota tenuissima Lea, 1829
+ Unio leptodon Conrad, 1836
+ Lampsilis blatchleyi Daniels, 1902

Ligumia nasuta (Say, 1817) = Sagittunio nasutus
+ Obliquaria (Ellipsaria) attenuata Rafinesque, 1820
+ Unio rostrata Valenciennes, 1827
+ Unio vaughanianus Sowerby, 1868

Ligumia recta (Lamarck, 1819)
+ Unio (Eurynia) latissima Rafinesque, 1820
+ Unio praelongus Barnes, 1823
+ Unio rectus Conrad, 1836
+ Unio sageri Conrad, 1836
+ Unio leprosus Miles, 1861
+ Unio arquatus Conrad, 1854
+ Unio angustatus var. cuniculus de Gregorio, 1914

Ligumia subrostrata (Say, 1831) = Sagittunio subrostratus
+ Unio nashvillianus Lea, 1834
+ Unio mississippiensis Conrad, 1850
+ Unio rutersvillensis Lea, 1859
+ Unio cocoduensis Reeve, 1865
+ Unio topekaensis Lea, 1868
+ Lampsilis (Eurynia) subrostrata var. furva Simpson, 1914

Margaritifera margaritifera (Linnaeus, 1758)
+ Margaritana fluviatilis Schumacher, 1817
+ Unio elongata Lamarck, 1819
+ Alasmodonta arcuata Barnes, 1823
+ Unio roissyi Michaud, 1831
+ Unio margaritifer var. minor Rossmässler, 1835
+ Dichonca crassissima Klein, 1753
+ Unio tristis Morelet, 1845

Margaritifera margaritifera (Linnaeus, 1758) = Pseudunio auricularius

Megalonaias nervosa (Rafinesque, 1820) = Amblema plicata
+ Unio undulata Valenciennes, 1827
+ Unio crassus var. giganteus Barnes, 1823
+ Unio undulatus Barnes, 1823
+ Unio heros Say, 1829
+ Unio multiplicatus Lea, 1831
+ Unio eightsii Lea, 1860
+ Unio atrocostatus Lea, 1845
+ Unio atrocostatus Reeve, 1864
+ Unio eighti Paetel, 1890
+ Unio triumphans B.H. Wright, 1898

Megalonaias nervosa (Rafinesque, 1820)

Obliquaria reflexa Rafinesque, 1820
+ Unio cornutus Barnes, 1823
+ Unio torulosus Short & Eaton, 1831
+ Obliquaria reflexa conradi Frierson, 1927

Obovaria olivaria (Rafinesque, 1820)
+ Unio brevialis Sowerby & Sowerby, 1821
+ Unio ellipsis Lea, 1828
+ Unio olivarius Conrad, 1834
+ Diplasma vitrea Potiez & Michaud, 1844
+ Unio taitanus Sowerby, 1868
+ Unio pealei Lea, 1871
+ Unio pearlii Scammon, 1906

Obovaria retusa (Lamarck, 1819)
+ Obovaria torsa Rafinesque, 1820
+ Unio torsus Potiez & Michaud, 1844

Obovaria subrotunda (Rafinesque, 1820)
+ Unio (Aximedia) levigata Rafinesque, 1820
+ Obovaria striata Rafinesque, 1820
+ Unio orbiculatus Hildreth, 1828
+ Unio circulus Lea, 1829
+ Unio lens Lea, 1831
+ Unio laevigatus Say, 1834
+ Unio rotundus Wood, 1828
+ Unio leibii Lea, 1862
+ Unio depygis Conrad, 1866
+ Obovaria lens var. parva Simpson, 1914
+ Obovaria lens var. elongata Simpson, 1914
+ Obovaria subrotunda globula Morrison, 1942

Plethobasus cicatricosus (Say, 1829)
+ Unio varicosus Lea, 1831
+ Unio detectus Frierson, 1911
+ Unio cicatricoides Frierson, 1911
+ Plethobasus pachosteus Morrison, 1969

Plethobasus cooperianus (Lea, 1834)
+ Unio striatus Reeve, 1864

Plethobasus cyphyus (Rafinesque, 1820)
+ Unio aesopus Green, 1827
+ Unio cyphia Rafinesque, 1820
+ Unio scyphius Küster, 1861
+ Unio compertus Frierson, 1911

Pleurobema clava (Lamarck, 1819)
+ Unio (Aximedia) elliptica Rafinesque, 1820
+ Pleurobema mytiloides Rafinesque, 1820
+ Pleurobema cuneata Rafinesque, 1820
+ Obliquaria (Scalenaria) scalenia Rafinesque, 1820
+ Unio patulus Lea, 1829
+ Unio cuneatus Say, 1834
+ Unio bournianus Lea, 1840
+ Unio consanguineus de Gregorio, 1914
+ Unio anaticulus var. ohiensis de Gregorio, 1914

Pleurobema cordatum (Rafinesque, 1820)
+ Unio obliqua Lamarck, 1819
+ Obovaria cordata var. rosea Rafinesque, 1820
+ Unio mytiloides Short & Eaton, 1831
+ Unio obliquus Call, 1900

Pleurobema plenum (Lea, 1840)
+ Quadrula cordata Vanatta, 1915

Pleurobema rubrum (Rafinesque, 1820) = Pleurobema sintoxia
+ Unio cardiacea Guérin-Méneville, 1823
+ Unio obliquus Wood, 1828
+ Unio mytiloides Bory de St. Vincent, 1827
+ Unio pyramidatus Lea, 1831
+ Unio ruber Conrad, 1853
+ Unio mytilloides Frierson, 1927

Pleurobema sintoxia (Rafinesque, 1820)
+ Unio coccineus Conrad, 1836
+ Unio catillus Conrad, 1836
+ Unio cuneus Conrad, 1838
+ Unio solidus Lea, 1838
+ Unio cardiacea Deshayes, 1839
+ Unio gouldianus Jay, 1839
+ Unio fulgidus Lea, 1845
+ Unio obovalis Conrad, 1853
+ Unio catilus B.H. Wright, 1888
+ Quadrula (sec. Fusconaia) coccinea var. paupercula Simpson, 1900
+ Pleurobema missouriensis Marsh, 1901
+ Quadrula (sec. Fusconaia) coccinea var. magnalacustris Simpson, 1914
+ Pleurobema coccineum var. mississippiensis F.C. Baker, 1928

Potamilus alatus (Say, 1817)
+ Metaptera megaptera Rafinesque, 1820

Potamilus capax (Green, 1832)
+ Symphynota globosa Lea, 1834

Potamilus ohiensis (Rafinesque, 1820)
+ Symphynota laevissima Lea, 1829
+ Unio ohiensis Say, 1834
+ Unio discoideus Sowerby, 1866

Ptychobranchus fasciolaris (Rafinesque, 1820) = Ligumia recta
+ Obliquaria (Plagiola) interrupta Rafinesque, 1820
+ Obliquaria (Ellipsaria) fasciolaris var. interrupta Rafinesque, 1820
+ Obliquaria (Ellipsaria) fasciolaris var. fuscata Rafinesque, 1820
+ Obliquaria (Ellipsaria) fasciolaris var. obliterata Rafinesque, 1820
+ Obliquaria (Ellipsaria) fasciolaris var. longa Rafinesque, 1820
+ Unio phaseolus Hildreth, 1828
+ Unio planulatus Lea, 1829
+ Unio camelus Lea, 1834
+ Unio fasciolaris Conrad, 1834
+ Unio compressissimus Lea, 1845
+ Unio compressissimus f.a performosus de Gregorio, 1914
+ Unio lanceolatus var. blandus de Gregorio, 1914
+ Unio imperitus de Gregorio, 1914
+ Ptychobranchus fasciolaris var. lacustris F.C. Baker, 1928
+ Unio arquatus Conrad, 1854

Ptychobranchus fasciolaris (Rafinesque, 1820)

Pyganodon cataracta marginata (Say, 1817) = Pyganodon cataracta

Pyganodon grandis grandis (Say, 1829) = Utterbackiana suborbiculata
+ Anodonta lugubris Say, 1829
+ Anodonta palna Lea, 1834
+ Anodonta stewartiana Lea, 1834
+ Symphynota benedictensis Lea, 1834
+ Anodonta declivis Conrad, 1834
+ Anodonta corpulenta Cooper, 1834
+ Anodonta gigantea Lea, 1838
+ Anodonta ovata Lea, 1838
+ Anodonta salmonia Lea, 1838
+ Anodonta decora Lea, 1838
+ Anodonta pepinianus Lea, 1838
+ Anodonta harpethensis Lea, 1840
+ Anodonta maryattiana Lea, 1840
+ Anodonta footiana Lea, 1840
+ Anodonta maryattana Lea, 1840
29 more...

Pyganodon grandis grandis (Say, 1829) = Anodonta californiensis

Pyganodon grandis grandis (Say, 1829) = Pyganodon grandis

Pyganodon lacustris (Lea, 1857)

Quadrula cylindrica cylindrica (Say, 1817) = Theliderma cylindrica
+ Unio naviformis Lamarck, 1819
+ Unio (Eurynia) solenoides Rafinesque, 1820
+ Unio rugosus Chenu, 1862
+ Unio cilindricus de Gregorio, 1914
+ Unio cilindricus [sic] var. propetipicus de Gregorio, 1914
+ Unio cilindricus [sic] var. acrispatus de Gregorio, 1914

Quadrula fragosa (Conrad, 1835) = Quadrula quadrula
+ Unio rugosus Barnes, 1823
+ Margarita (Unio) fragrosus Lea, 1836
+ Unio tragosus Hanley, 1843

Quadrula fragosa (Conrad, 1835)

Quadrula metanevra (Rafinesque, 1820) = Theliderma metanevra
+ Unio nodosus Barnes, 1823
+ Unio metanever Lea, 1829
+ Unio metaniver Catlow & Reeve, 1845
+ Unio metaneurus Herrmannsen, 1849
+ Unio wardii Lea, 1861

Quadrula nodulata (Rafinesque, 1820) = Pustulosa nodulata
+ Unio pustulatus Lea, 1831
+ Unio nodulatus Say, 1834

Quadrula pustulosa pustulosa (Lea, 1831) = Pustulosa pustulosa
+ Obliquaria (Quadrula) bullata Rafinesque, 1820
+ Obliquaria (Quadrula) retusa Rafinesque, 1820
+ Unio verrucosa Valenciennes, 1827
+ Unio premorsus Rafinesque, 1831
+ Unio nodulosus Say, 1834
+ Unio bullatus Conrad, 1838
+ Unio prasinus Conrad, 1834
+ Unio schoolcraftensis Lea, 1834
+ Unio dorfeuillianus Lea, 1838
+ Unio pernodosus Lea, 1845
+ Unio schoolcraftii Lea, 1870
+ Quadrula pustulosa asperatus Utterback, 1915

Quadrula quadrula (Rafinesque, 1820)
+ Unio lacrymosus Lea, 1828
+ Unio asperrimus Lea, 1831
+ Unio quadrulus Say, 1834
+ Quadrula lachrymosa Swainson, 1840
+ Unio quadratus Reeve, 1864
+ Unio lunulatus Pratt, 1876
+ Quadrula quadrula contraryensis Utterback, 1915
+ Quadrula (Quadrula) quadrula bullocki F.C. Baker, 1928

Simpsonaias ambigua (Say, 1825)
+ Unio hildrethianus Lea, 1834
+ Alasmidonta dubia Ferussac, 1835

Strophitus undulatus (Say, 1817)
+ Anodonta pensylvanica Lamarck, 1819
+ Anodon rugosus Swainson, 1822
+ Anodonta undulata Hildreth, 1828
+ Anodonta pennsylvanica Stark, 1828
+ Alasmodonta edentula Say, 1829
+ Anodon areolatus Swainson, 1829
+ Anodonta marginata Ferussac, 1835
+ Anodonta ferussaciana Ferussac, 1835
+ Anodonta virgata Conrad, 1836
+ Anodonta wardiana Lea, 1838
+ Anodon unadilla De Kay, 1843
+ Anodonta pavonia Lea, 1838
+ Anodonta tetragona Lea, 1845
+ Anodonta arkansensis Lea, 1852
+ Anodonta shaefferiana Lea, 1852
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Toxolasma lividum (Rafinesque, 1831)
+ Unio glans Lea, 1831
+ Unio moestus Lea, 1841
+ Unio maestus Lea, 1842

Toxolasma parvum (Barnes, 1823)
+ Carunculina parva cahni F.C. Baker, 1927
+ Unio pertennis de Gregorio, 1914

Tritogonia verrucosa (Rafinesque, 1820) = Quadrula verrucosa
+ Unio tuberculatus Barnes, 1823
+ Unio verrucosus Say, 1834
+ Unio (Theliderma) pustulata Swainson, 1840
+ Unio gigas Sowerby, 1867
+ Unio conjugans B.H. Wright, 1899
+ Tritogonia tuberculata var. obesa Simpson, 1900
+ Quadrula tritogonia Ortmann, 1909
+ Quadrula parkeri Geiser, 1911

Truncilla donaciformis (Lea, 1828)
+ Unio zigzag Lea, 1829
+ Unio nervosa Conrad, 1834
+ Unio zig-zag var. illius de Gregorio, 1914

Truncilla truncata Rafinesque, 1820
+ Truncilla truncata var. fusca Rafinesque, 1820
+ Truncilla truncata var. vermiculata Rafinesque, 1820
+ Unio elegans Lea, 1831
+ Unio truncatus Say, 1834
+ Unio elegans var. elegantopsis de Gregorio, 1914
+ Unio elegans var. magnelegans de Gregorio, 1914
+ Truncilla truncata var. lacustris F.C. Baker, 1928

Uniomerus declivis (Say, 1831) = Uniomerus tetralasmus
+ Unio sayanus Conrad, 1838
+ Unio symmetricus Lea, 1845

Uniomerus declivis (Say, 1831)

Uniomerus tetralasmus (Say, 1831)
+ Unio camptodon Say, 1832
+ Unio declivis Conrad, 1836
+ Unio sayii Tappan, 1839
+ Unio parallelus Conrad, 1841
+ Unio rivularis Conrad, 1853
+ Unio porrectus Conrad, 1854
+ Unio subcroceus Conrad, 1854
+ Unio manubius Gould, 1855
+ Unio jamesianus Lea, 1857
+ Unio electrinus Reeve, 1865
+ Unio manubrius Paetel, 1890
+ Uniomerus tetralasma comptodon Utterback, 1915

Utterbackia imbecillis (Say, 1829)
+ Anodonta incerta Lea, 1834
+ Anodon horda Gould, 1855
+ Anodonta imbecilis Lea, 1836
+ Anodonta henryiana Lea, 1857
+ Anodonta hordeum Paetel, 1890
+ Anodonta phalena de Gregorio, 1914
+ Anodonta ohiensis Utterback, 1915
+ Utterbackia imbecillis fusca F.C. Baker, 1927

Venustaconcha ellipsiformis (Conrad, 1836)
+ Unio venustus Lea, 1838
+ Unio spatulatus Lea, 1845

Villosa fabalis (Lea, 1831) = Paetulunio fabalis
+ Unio lapillus Say, 1831
+ Unio capillus Say, 1831
+ Unio donacopsis de Gregorio, 1914

Villosa iris (Lea, 1829) = Cambarunio iris
+ Unio novieboraci Lea, 1838
+ Unio subrostratus Küster, 1861
+ Unio opalinus J.G. Anthony, 1866
+ Lampsilis (Ligumia) nervosa Frierson, 1927

Villosa lienosa (Conrad, 1834) = Leaunio lienosus
+ Unio saxeus Conrad, 1838
+ Unio gouldii Lea, 1845
+ Unio caliginosus Lea, 1845
+ Unio nigerrimus Lea, 1852
+ Unio concestator Lea, 1857
+ Unio intercedens Lea, 1857
+ Unio apicinus Lea, 1857
+ Unio fallax Lea, 1857
+ Unio prattii Lea, 1858
+ Unio contiguus Lea, 1861
+ Unio fuligo Reeve, 1865
+ Unio bicaelatus Reeve, 1865
+ Unio porphyreus Lea, 1861
+ Unio fontanus Conrad, 1866
+ Unio unicostatus B.H. Wright, 1899

Villosa lienosa (Conrad, 1834) = Leaunio umbrans