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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 | Unionoida | Unionoidea | Unionidae | Unioninae | Unionini | Unio

species Unio ionicus Drouët, 1879: synonymy
     1 specimen + 34 Genbank vouchers

Unio ionicus Drouët, 1879
‘Blanc, in litt.’ Drouët, 1879. J. de Conch. 27: 329.
(correct name for Unio jonicus Kobelt, 1886)
Type(s): TYPE ANSP_332761, Santa Maura Is., Greece.

Unio crassus jonicus [sic]Haas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (Crassunio) crassus ionicusBank (2006)
Unio ionicusAraujo et al. (2018), Graf & Cummings (2021), Príe et al. (2021), Lopes-Lima et al. (2021), Lyubas et al. (2022), Lopes-Lima et al. (2024), Hou et al. (2024)

Unio jonicus Kobelt, 1886
‘Drouët’ of Authors.
Kobelt, 1886. Icon. Land- und Süssw.-Moll. 2: 43.
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 153.
Kobelt, 1893. Icon. Land- und Süssw.-Moll. 6: 87.
Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 131.
Haas, 1969. Das Tierreich 88: 52.
Lopes-Lima et al., 2017. Biol. Rev. 92(1): 578.
Lyubas et al., 2022. Diversity 14(11), 935: Table S3.
(error for Unio ionicus Drouët, 1879)

Unio helenae Drouët, 1892
Drouët, 1892. J. de Conch. 40: 87.

Unio crassus jonicus [sic]Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio (Crassunio) crassus ionicusBank (2006)
Unio ionicusLopes-Lima et al. (2024)

Unio scissus Drouët, 1893
Drouët, 1893. J. de Conch. 41: 40.

Unio crassus bruguierianusHaas (1940), Haas (1969)
Unio (Crassunio) crassus bruguierianusBank (2006)
Unio ionicusLopes-Lima et al. (2024)

Taxonomic History (since 1900)

Unio crassus jonicus [sic]Haas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio crassus bruguierianusHaas (1940), Haas (1969)
Unio (Crassunio) crassus ionicusBank (2006)
Unio (Crassunio) crassus bruguierianusBank (2006)
Unio ionicusAraujo et al. (2018), Graf & Cummings (2021), Príe et al. (2021), Lopes-Lima et al. (2021), Lyubas et al. (2022), Lopes-Lima et al. (2024), Hou et al. (2024)

 
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