Page last updated
Thu 17 July 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!

Bivalvia | ... | Unionidae | Unioninae | Unionini | Unio

species Unio delphinus Spengler, 1793: specimens
     38 available nominal species synonyms (45 total synonyms)

Recent Taxonomic Opinions

Unio delphinus — Araujo et al. (2009), Khalloufi et al. (2011), IUCN (2011), Graf & Cummings (2011), Fauna Europaea (2012), ... Wu et al. (2024), Dai et al. (2024), Hou et al. (2024), Dai et al. (2025), Wu et al. (2025)
Unio mancus requienii — Prie (2012)
Unio pictorum — He & Zhuang (2013)

Range

Atlantic basins of the Iberian Peninsula and Morocco.

Map of Georeferenced Specimens

France

MNHN_22547. La Grosne, à Marnay (Saône-et-Loire)

MNHN_22549. La Loire à Nantes (Loire-Infereur)

MNHN_22563. La Loire, près Angers

MNHN_22548. La Saône, à Châlon-sur-Saône

MNHN_22564. la Saône, à Collonges (Rhône)

MNHN_22546. Varennes (Jura)

Morocco

Portugal

BMNH_92-2-4-1975. Portugal

Georeferenced Genbank Vouchers

Portugal

Mp_3580_UpictTU2.7. (16S, COI) Abrantes, Tagus River, Tagus Basin, Portugal

Mp_3580_UpictABR1.19. (16S, COI) Abreiro, Tua River, Douro Basin, Portugal

Mp_3580_UpictABR2.19. (16S, COI) Abreiro, Tua River, Douro Basin, Portugal

Mp_3580_UpictME1.23. (16S, COI) Capinha, Meimoa River, Tagus Basin, Portugal

Mp_3580_UpictME2.23. (16S, COI) Capinha, Meimoa River, Tagus Basin, Portugal

Mp_3580_UpictPN2.24. (16S, COI) Castelo Branco, Pônsul River, Tagus Basin, Portugal

Mp_3580_UpictPN3.24. (16S) Castelo Branco, Pônsul River, Tagus Basin, Portugal

Mp_3580_UpictPON1.24. (16S, COI) Castelo Branco, Pônsul River, Tagus Basin, Portugal

Mp_3580_UpictPON2.24. (16S, COI) Castelo Branco, Pônsul River, Tagus Basin, Portugal

Mp_3580_UpictCOU2.12. (16S, COI) Castelo Melhor, Côa River, Douro Basin, Portugal

Mp_3580_UpictSB1.15. (16S) Cilhade, Sabor River, Douro Basin, Portugal

Mp_3580_UpictSB2.15. (16S, COI) Cilhade, Sabor River, Douro Basin, Portugal

MNCN_COU1. (16S, COI) Coa (Duero) River, Portugal

Mp_3580_UpictAG1.1. (16S) Escalhão, Águeda River, Douro Basin, Portugal

Mp_3580_UpictAG2.1. (16S) Escalhão, Águeda River, Douro Basin, Portugal

Mp_3580_UpictVCU1.9. (16S, COI) Espirito Santo, Vascão River, Guadiana Basin, Portugal

Mp_3580_UpictVCU2.9. (16S, COI) Espirito Santo, Vascão River, Guadiana Basin, Portugal

Mp_3580_UpictAR1.6. (16S) Ladoeiro, Aravil River, Tagus Basin, Portugal

Mp_3580_UpictAR2.6. (16S) Ladoeiro, Aravil River, Tagus Basin, Portugal

Mp_3580_UpictARP1.6. (COI) Ladoeiro, Aravil River, Tagus Basin, Portugal

Mp_3580_UpictARP2.6. (COI) Ladoeiro, Aravil River, Tagus Basin, Portugal

Mp_3580_UpictARS1.6. (16S, COI) Ladoeiro, Aravil River, Tagus Basin, Portugal

Mp_3580_UpictARS2.6. (16S) Ladoeiro, Aravil River, Tagus Basin, Portugal

Mp_3580_UpictMER2.21. (16S, COI) Mertola, Guadiana River, Guadiana Basin, Portugal

Mp_3580_UpictRA1.14. (16S) Miradeses, Rabaçal River, Douro Basin, Portugal

Mp_3580_UpictRA2.14. (16S) Miradeses, Rabaçal River, Douro Basin, Portugal

Mp_3580_UpictSBR1.16. (16S) Mogadouro, Sabor River, Douro Basin, Portugal

Mp_3580_UpictMBU1.17. (16S) Mondim-de-Basto, Tâmega River, Douro Basin, Portugal

Mp_3580_UpictMBU2.17. (16S) Mondim-de-Basto, Tâmega River, Douro Basin, Portugal

Mp_3580_UpictGUA11.20. (16S, COI) Moura, Guadiana River, Guadiana Basin, Portugal

Mp_3580_UpictGUA2.20. (16S) Moura, Guadiana River, Guadiana Basin, Portugal

Mp_3580_UpictGUA4.20. (16S, COI) Moura, Guadiana River, Guadiana Basin, Portugal

Mp_3580_UpictGUA5.20. (16S, COI) Moura, Guadiana River, Guadiana Basin, Portugal

Mp_3580_UpictTUA1.18. (COI) mouth of Tua River, Douro Basin, Portugal

Mp_3580_UpictTUA2.18. (16S, COI) mouth of Tua River, Douro Basin, Portugal

Mp_3580_UpictXEU1.3. (16S) Ouguela. Xévora River, Guadiana Basin, Portugal

Mp_3580_UpictXEU2.3. (COI) Ouguela. Xévora River, Guadiana Basin, Portugal

Mp_3580_UpictMO1.4. (16S, COI) Pereira, Mondego River, Mondego Basin, Portugal

Mp_3580_UpictMO2.4. (16S) Pereira, Mondego River, Mondego Basin, Portugal

Mp_3580_UpictL1.22. (16S, COI) Ponte-da-Barca, Lima River, Lima Basin, Portugal

Mp_3580_UpictL2.22. (16S, COI) Ponte-da-Barca, Lima River, Lima Basin, Portugal

Mp_3580_UpictMA1.13. (16S, COI) Quintanilha, Maças River, Douro Basin, Portugal

Mp_3580_UpictMA2.13. (16S) Quintanilha, Maças River, Douro Basin, Portugal

Mp_3580_UpictV2.25. (16S, COI) Sever do Vouga, Vouga River, Vouga Basin, Portugal

Mp_3580_UpictV4.25. (16S, COI) Sever do Vouga, Vouga River, Vouga Basin, Portugal

Mp_3580_UpictSDU1.5. (16S, COI) Torre Vã, Sado River, Sado Basin, Portugal

Mp_3580_UpictSDU2.5. (16S) Torre Vã, Sado River, Sado Basin, Portugal