UNIONIDAE Rafinesque, 1820

Coan, Eugene V., Pacaud, Jean-Michel & Kabat, Alan R., 2024, Gérard-Paul Deshayes (1796 - 1875) and his taxa, Geodiversitas 46 (16), pp. 553-930 : 719-720

Family UNIONIDAE Rafinesque, 1820

Emblema – Deshayes, 1840-DictUniv1: 334. Incorrect subsequent spelling of Amblema Rafinesque, 1820 .

Strophites – Deshayes, 1832-EncyMeth: 998. Incorrect subsequent spelling of Strophitus Rafinesque, 1820 , now regarded as a valid genus.

anceps , Unio – Deshayes in Deshayes & Jullien, 1876: 127-128, 160, pl. 6, figs 9-12. — Type locality: Mekong River, Cambodia. — Type age: Recent. — Type material: MNHN-IM-2000-1636, 2 syntypes. — Current status: Scabies anceps (Deshayes in Deshayes & Jullien, 1876) ( Graf & Cummings 2020).

broti , Unio – Deshayes in Deshayes & Jullien, 1876: 129-130, 160, pl. 7, figs 1-3. — Type locality: Sambor, Mekong River, Cambodia, 10-15 cm. of water. — Type age: Recent. — Type material: MNHN-IM-2000-1652, 1 syntype. — Preoccupies Unio broti Locard, 1893 , which has not been replaced. — Current status: Synonym of Unionetta fabagina (Deshayes in Deshayes & Jullien, 1876) ( Nevesskaja et al. 2013: 123, fig. 28-5; Graf & Cummings 2020).

cardiacea, Unio –Deshayes, 1839-TraitElem: 19, pl. 31, figs 1-2. — Type locality: none given. — Type age: Recent. This species was figured here and the same year in Guérin-Méneville (1839: 45, pl. 28, fig. 7), in the latter credited to Say, but Say did not describe it. (Say did have a Unio cardice as a nomen nudum in 1829: 292). — Current status: synonym of the North American Pleurobema rubrum (Rafinesque, 1820) [ Obliquaria ] ( Graf & Cummings 2020).

comptus , Unio – Deshayes in Deshayes & Jullien, 1876: 126-127, 159, pl. 6, figs 3-4. — Type locality: Cambodia. — Type age: Recent. — Type material:MNHN-IM-2000-1661, 1 syntype. Contradens comptus “(Deshayes & Jullien 1874) ” ( Konopleva et al. 2019: 5-7). — Current status: Lens comptus (Deshayes in Deshayes & Jullien, 1876) (J. M. Pfeiffer et al. 2021: 412-413).

crossei, Unio –Deshayes in Deshayes & Jullien, 1876: 124-125, 159, pl. 6, figs 5-7. — Type locality: Cambodia. — Type age: Recent. — Type material: MNHN-IM-2000-1668, 2 syntypes. Synonym of Contradens contradens ( I. Lea , 1838) [ Unio ] ( Do et al. 2018: 5). — Current status: synonym of Lens micropterus ( Morelet, 1866) [ Unio ] (J. M. Pfeiffer et al. 2021: 418).

cyreniformis, Unio – Deshayes, 1858-TraitElem: 215. Replacement name for Unio tumidus [as tumida ] J. de C. Sowerby, 1840 (explanation to pl. 47, figs 11-12), non Retzius, 1788. — Type locality: Decan Plateau, India. — Type age: Cretaceous. — Type material: BMNH-PIMB 953, lectotype; -952a-c, paralectotypes (Hartmann et al. 2008: 1245). However, this junior homonym was earlier renamed Unio subtumidus d’Orbigny, 1850b (d’Orbigny 1850b: 306, no. 172) and later unnecessarily renamed Unio malcolmsoni Hislop, 1860 ( Hislop 1860: 174). — Current status: Parreysia subtumida (d’Orbigny, 1850) .

draparnaldi, Unio –Deshayes, 1831b: 43, 262, pl. 14, fig. 6. — Type locality: Lower Brittany, small river. — Type age: Recent. Deshayes stated that he was naming this species for J. P. R. Draparnaud, so the name could be corrected to U. draparnaudi . Unnecessarily renamed Unio littoralis var. subtriangularis Drouët, 1898 ( Drouët 1898: 41). — Current status: synonym of Potomida littoralis (Cuvier, 1798) [ Unio ] ( Araujo et al. 2009: 28).

draparnaudi , Unio – see previous entry.

durieui , Unio – Deshayes, 1848- Algér: pl. 109, figs 5-8. — Type locality: Algeria. — Type age: Recent. — Type material: lost. — Current status: Unio durieui Deshayes , “1847” ( Khalloufi et al. 2011: 108-111, figs 5A-D, 6A-E).

fabagina , Unio – Deshayes in Deshayes & Jullien, 1876: 128-129, 160, pl. 7, figs 4-6. — Type locality: Sombour, Mekong River, Cambodia, 10-15 cm. of water. — Type age: Recent. — Type material: MNHN-IM-2000-1694, 1 syntype. — Type species (OD) of Unionella F. Haas, 1913 , non Etheridge, 1888. Unionetta F. Haas, 1913 , replacement name. — Current status: Unionetta fabagina (Deshayes in Deshayes & Jullien, 1876) ( Brandt 1974: 280).

fellmanni, Unio – Deshayes, 1848- Algér: pl. 108, figs 8-9, pl. 109, fig. 9, pl. 110, figs 1-5, pl. 111, figs 1-6, pl. 112, figs 1-4, pl. 113, figs 1-4, pl. 114, figs 1-8. — Type locality: Lac Obeira, Algeria ( Daget 1998: 84-85). — Type age: Recent. — Current status: Synonym of Potomida littoralis (Cuvier, 1798) [ Unio ] ( Khalloufi et al. 2011: 113, as “1847”).

lucasii, Anodonta – Deshayes, 1848- Algér: pl. 108, figs 1-3. — Type locality: “La Calle” [ El Kala ], Algeria. — Type age: Recent. Morelet (1851: 359) redescribed the Deshayes species, and the “ holotype ” in NHMUK, 1893.2.4.1950, is the specimen used by Morelet, not the original Deshayes specimen ( Johnson 1971: 87, as “ holotype ” of Deshayes). — Current status: synonym of Anodonta cygnea (Linnaeus, 1758) [ Mytilus ] ( Daget 1998: 19; Graf & Cummings 2020).

michaudi , Unio –Deshayes, 1858-DescrCoqFoss: 62, pl. 62, figs 1-5; 1860-DescrCoqFoss: 802-803. — Type locality: Cuis. — Type age:

Eocene (Ypresian). — Type species (OD) of Propotomida Modell, 1964 . — Current status: Palindonaia michaudi (Deshayes, 1858) ( Le Renard & Pacaud 1995: 80) , now Propotomida michaudi (Deshayes, 1858) .

moreleti , Unio – Deshayes, 1848- Algér: pl. 109, figs 1-4, pl. 112, fig. 5. — Type locality: Algeria. — Type age: Recent. — Type material: lost. — Type species (SD Graf, 2010) of Moreletiana Locard, 1889, which is now regarded as a synonym of Unio . — Current status: synonym of Unio ravoisieri Deshayes, 1848 (first reviser: Daget 1998: 91, both as “1847”).

purpurea , Anodonta – Deshayes, 1826b: 61. — Type locality: Nile River. — Type age: Recent. Not to be confused with Anodonta purpurea Valenciennes, 1827 , type species of Simpsonella Cockerell, 1903 . Valenciennes’ name could perhaps be maintained under ICZN Code Art. 23.9.1, or the next available name, Simpsonella burroughiana I. Lea , 1834, could be used. — Current status: synonym of Mutela dubia (Gmelin, 1791) [ Mytilus ] ( Graf & Cummings 2020).

ravoisieri , Unio – Deshayes, 1848- Algér: pl. 108, figs 4-7. — Type locality: Lac Oubeira, near La Calle, Algeria ( Daget 1998: 91). — Type age: Recent. — Type material: lost. — Current status: Unio ravoisieri Deshayes, 1848 ( Graf & Cummings 2011: 24; Khalloufi et al. 2011: 108-110, figs 3-4, as “1847”).

sculptus , Unio – Deshayes, 1874b: 9-10, 12, pl. 2, fig. 3. — Type locality: Du Petchily, China. — Type age: Recent. — Type material: MNHN-IM-2000-1779, 6 syntype pairs, 1 syntype valve. Deshayes species is the same year as the Miocene Unio sculptus Brusina, 1874 . While Brusina (1874) has not been pinned down to a specific date, Deshayes’ taxon was issued before August 1 and is thus senior. — Current status: synonym of Nodularia douglasiae (J. E. Gray, in Griffith & Pidgeon, 1833) ( Graf & Cummings 2020).

semialatus, Unio – Deshayes in Deshayes & Jullien, 1876: 123-124, 159, pl. 6, figs 1-2. — Type locality: Arroyo de Peam-Chelang, Cambodia; rare. — Type age: Recent. — Type material: MNHN- IM-2000-1780, holotype. — Current status: synonym of Physunio micropterus ( Morelet, 1866) [ Unio ] ( Brandt 1974: 296), now Lens micropterus ( Morelet, 1866) (J. M. Pfeiffer et al. 2021: 418).

sempervivens, Anodonta – Deshayes in Deshayes & Jullien, 1876: 120-123, 159, pl. 5, figs 4-5. — Type locality: Arroyo de Peam-Chelang, Cambodia; common. — Type age: Recent. — Type material: MNHN-IM-2000-1781, 4 syntypes. — Current status: synonym of Pilsbryoconcha exilis ( I. Lea , 1838) [ Anodonta ] ( Graf & Cummings 2020), or of Pilsbryoconcha carinifera (Conrad, 1837) (Jeratthikul et al. 2022: 7, figs 3e-4, 4).

wateleti , Unio –Deshayes, 1858-DescrCoqFoss: 62, as Unio “ deshayesi Watelet ”, pl. 62, figs 9-13; 1860-DescrCoqFoss: 804; 1865-DescrCoqFoss: 666 [error noted]. — Type localities: Soissons & Vauxbuin. — Type age: Eocene (Ypresian). — Current status: Palindonaia wateleti (Deshayes, 1858) ( Le Renard & Pacaud 1995: 80) .

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Purpurine – Blainville, 1826: 249, ex Deshayes ms. A vernacular, later latinized as Purpurina Herrmannsen, 1852 , non d’Orbigny, 1850 [ Gastropoda]. Herrmannsen’s genus, the type species (M) of which is Anodonta purpurea Valenciennes, 1827 , is an objective synonym of Simpsonella Cockerell, 1903 .

tumida , Monocondylea – Deshayes & Jullien, 1876: 117-120, pl. 5, figs 1-3, ” ex Morelet ms”. This has been treated by some authors as a homonym of Morelet’s Monodondylus tumida Morelet, 1866 ( Morelet 1866: 62), and then “renamed” Pseudodon moreleti Crosse & P. Fischer, 1876b ( Crosse & Fischer 1876b: 330). However, Deshayes & Jullien clearly indicate they are discussing Morelet’s species, so it is a case of alleged misuse, not homonymy, and there is no such Deshayes & Jullien species. The misinterpretation was continued in Breure et al. (2022a: 161) and in some online databases. Morelet’s species is now treated as Sundadontina tumida ( Morelet, 1866) in the Unionidae . Crosse & Fischer’s species is now treated as Sundadontina moreleti ( Crosse & Fischer 1876b) .