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!

Bivalvia | Unionoida | Unionoidea | 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), ... Dai et al. (2024), Hou et al. (2024), Dai et al. (2025), Wu et al. (2025), Chen 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: EF571380, COI: EF571435, go to Genbank) Abrantes, Tagus River, Tagus Basin, Portugal.

Mp_3580_UpictABR1.19. (16S: EF571345, COI: EF571413, go to Genbank) Abreiro, Tua River, Douro Basin, Portugal.

Mp_3580_UpictABR2.19. (16S: EF571346, COI: EF571414, go to Genbank) ditto.

Mp_3580_UpictME1.23. (16S: EF571364, COI: EF571426, go to Genbank) Capinha, Meimoa River, Tagus Basin, Portugal.

Mp_3580_UpictME2.23. (16S: EF571365, COI: EF571427, go to Genbank) ditto.

Mp_3580_UpictPN2.24. (16S: EF571369, COI: EF571430, go to Genbank) Castelo Branco, Pônsul River, Tagus Basin, Portugal.

Mp_3580_UpictPN3.24. (16S: EF571370, go to Genbank) ditto.

Mp_3580_UpictPON1.24. (16S: EF571371, COI: EF571431, go to Genbank) ditto.

Mp_3580_UpictPON2.24. (16S: EF571372, COI: EF571432, go to Genbank) ditto.

Mp_3580_UpictCOU2.12. (16S: EF571353, COI: EF571419, go to Genbank) Castelo Melhor, Côa River, Douro Basin, Portugal.

Mp_3580_UpictSB1.15. (16S: EF571375, go to Genbank) Cilhade, Sabor River, Douro Basin, Portugal.

Mp_3580_UpictSB2.15. (16S: EF571376, COI: EF571433, go to Genbank) ditto.

MNCN_COU1. (16S: KX400216, COI: EF571418, go to Genbank) Coa (Duero) River, Portugal.

Mp_3580_UpictAG1.1. (16S: EF571347, go to Genbank) Escalhão, Águeda River, Douro Basin, Portugal.

Mp_3580_UpictAG2.1. (16S: EF571348, go to Genbank) ditto.

Mp_3580_UpictVCU1.9. (16S: EF571384, COI: EF571440, go to Genbank) Espirito Santo, Vascão River, Guadiana Basin, Portugal.

Mp_3580_UpictVCU2.9. (16S: EF571385, COI: EF571441, go to Genbank) ditto.

Mp_3580_UpictAR1.6. (16S: EF571349, go to Genbank) Ladoeiro, Aravil River, Tagus Basin, Portugal.

Mp_3580_UpictAR2.6. (16S: EF571350, go to Genbank) ditto.

Mp_3580_UpictARP1.6. (COI: EF571415, go to Genbank) ditto.

Mp_3580_UpictARP2.6. (COI: EF571416, go to Genbank) ditto.

Mp_3580_UpictARS1.6. (16S: EF571351, COI: EF571417, go to Genbank) ditto.

Mp_3580_UpictARS2.6. (16S: EF571352, go to Genbank) ditto.

Mp_3580_UpictMER2.21. (16S: EF571366, COI: EF571428, go to Genbank) Mertola, Guadiana River, Guadiana Basin, Portugal.

Mp_3580_UpictRA1.14. (16S: EF571373, go to Genbank) Miradeses, Rabaçal River, Douro Basin, Portugal.

Mp_3580_UpictRA2.14. (16S: EF571374, go to Genbank) ditto.

Mp_3580_UpictSBR1.16. (16S: EF571377, go to Genbank) Mogadouro, Sabor River, Douro Basin, Portugal.

Mp_3580_UpictMBU1.17. (16S: EF571362, go to Genbank) Mondim-de-Basto, Tâmega River, Douro Basin, Portugal.

Mp_3580_UpictMBU2.17. (16S: EF571363, go to Genbank) ditto.

Mp_3580_UpictGUA11.20. (16S: EF571354, COI: EF571420, go to Genbank) Moura, Guadiana River, Guadiana Basin, Portugal.

Mp_3580_UpictGUA2.20. (16S: EF571355, go to Genbank) ditto.

Mp_3580_UpictGUA4.20. (16S: EF571356, COI: EF571421, go to Genbank) ditto.

Mp_3580_UpictGUA5.20. (16S: EF571357, COI: EF571422, go to Genbank) ditto.

Mp_3580_UpictTUA1.18. (COI: EF571436, go to Genbank) mouth of Tua River, Douro Basin, Portugal.

Mp_3580_UpictTUA2.18. (16S: EF571381, COI: EF571437, go to Genbank) ditto.

Mp_3580_UpictXEU1.3. (16S: EF571386, go to Genbank) Ouguela. Xévora River, Guadiana Basin, Portugal.

Mp_3580_UpictXEU2.3. (COI: EF571442, go to Genbank) ditto.

Mp_3580_UpictMO1.4. (16S: EF571367, COI: EF571429, go to Genbank) Pereira, Mondego River, Mondego Basin, Portugal.

Mp_3580_UpictMO2.4. (16S: EF571368, go to Genbank) ditto.

Mp_3580_UpictL1.22. (16S: EF571358, COI: EF571423, go to Genbank) Ponte-da-Barca, Lima River, Lima Basin, Portugal.

Mp_3580_UpictL2.22. (16S: EF571359, COI: EF571424, go to Genbank) ditto.

Mp_3580_UpictMA1.13. (16S: EF571360, COI: EF571425, go to Genbank) Quintanilha, Maças River, Douro Basin, Portugal.

Mp_3580_UpictMA2.13. (16S: EF571361, go to Genbank) ditto.

Mp_3580_UpictV2.25. (16S: EF571382, COI: EF571438, go to Genbank) Sever do Vouga, Vouga River, Vouga Basin, Portugal.

Mp_3580_UpictV4.25. (16S: EF571383, COI: EF571439, go to Genbank) ditto.

Mp_3580_UpictSDU1.5. (16S: EF571378, COI: EF571434, go to Genbank) Torre Vã, Sado River, Sado Basin, Portugal.

Mp_3580_UpictSDU2.5. (16S: EF571379, go to Genbank) ditto.