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 | 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 | Unionoida | Unionoidea | Unionidae | Ambleminae | Pleurobemini genus Hemistena Rafinesque, 1820: synonymy1 Recent freshwater species (1 total species)
 Hemistena Rafinesque, 1820Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 317.
 Rafinesque, 1864. [in] Binney & Tryon, reprint: 60.
 (intro'd as sub-gen. of Anodonta Lamarck, 1799)
 Type species: Anodonta (Lastena) lata Rafinesque, 1820 (monotypy) = Hemistena lata
 Odatelia Rafinesque, 1832Rafinesque, 1832. Atl. Jour. 1(4): 154.
 Rafinesque, 1864. [in] Binney & Tryon, reprint: 92.
 Type species: Odatelia radiata Rafinesque, 1832 (monotypy) = Hemistena lata
 Sayunio de Gregorio, 1914de Gregorio, 1914. Il Nat. Siciliano 2: 62.
 (intro'd as sub-gen. of Unio Retzius, 1788)
 Type species: Unio dehiscens Say, 1829 (herein) = Hemistena lata
 Hemilastena Agassiz, 1852‘Rafinesque’ Agassiz, 1852. Arch. Naturg. 18(1): 50.
 (error for Hemistena Rafinesque, 1820)
 Hemilastina Frierson, 1914Frierson, 1914. Nautilus 28: 40.
 (error for Hemistena Rafinesque, 1820)
Taxonomic History (since 1900)Lastena — Simpson (1900), Ortmann (1912), Simpson (1914), Vanatta (1915), Walker (1918), Ortmann (1918), Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), Haas (1969), Stansbery (1970) Unio (Anodonta) — Call (1900)
 Unio (Sayunio) — de Gregorio (1914)
 Hemistena — Frierson (1927), Thiele (1934), Haas (1969), Burch (1975), R.I. Johnson (1980), ... Klymus et al. (2020), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025)
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