MUSSELpdb | valid sp. Plectomerus dombeyanus synonymy

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Page last updated
Tue 01 Jul 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!

The nominal species (available and otherwise) in this synonymy are listed by usage rather than strictly by publication date. The primary sorting order is by the most recent year (since 1969) that the species name was treated as valid, and then nominal species are sorted secondarily by publication year.

The taxonomic history of the valid species (since 1900) is listed at the bottom of the page.

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species Plectomerus dombeyanus (Valenciennes in Humboldt & Bonpland, 1827): nominal species
3 specimens available.

Unio dombeyana Valenciennes, 1827
Valenciennes, 1827, Receuil Observ. Zool. 2(11-12): 227, pl. 53, figs. 1a-b.

Unio dombeyana — Valenciennes (1827)
Unio plicatus — Lea (1829), Ferussac (1835), Hanley (1843), Reeve (1864), Sowerby (1866)
Margarita (Unio) plicatus — Lea (1836), Lea (1838)
Unio (Theliderma) dombeyana — Swainson (1840)
Margaron (Unio) plicatus — Lea (1852), Lea (1870)
Plectomerus plicatus — Conrad (1853)
Quadrula (sec. Crenodonta) trapezoides — Simpson (1900), Simpson (1914)
Plectomerus trapezoides — Ortmann & Walker (1922)
Amblema (Plectomerus) dombeyana — Frierson (1927), Haas (1969)
Amblema dombeyana — Thiele (1934)
Plectomerus dombeyanus — Haas (1969), Burch (1975), Gordon et al. (1979), R.I. Johnson (1980), ..., Stodola et al. (2021), Graf & Cummings (2021), Hopper et al. (2023), Freeman et al. (2025)
Amblema dombeyanus — Davis & Fuller (1981)
Plectomerus dombeyana — Oesch (1984), Vidrine (1993)

Unio crassidens Lamarck, 1819
Lister, 1685, Conch.: pl. 150, fig. 5.
Lamarck, 1819, Hist. Natur. Anim. sans Vert. 6: 71, sp. 3, var. a. [in part]
(misidentified reference to Unio crassidens Lamarck, 1819)

Unio crassidens — Lamarck (1819)
Unio plicatus — Lea (1829)
Unio plicata — Ravenel (1834)
Unio trapezoides — Lea (1834), Hanley (1843), Küster (1862)
Unio trapezoïdes — Ferussac (1835)
Margarita (Unio) trapezoides — Lea (1836), Lea (1838)
Mysca crassidens — Schlüter (1838)
Unio (Theliderma) crassidens — Swainson (1840)
Margaron (Unio) trapezoides — Lea (1852), Lea (1870)
Plectomerus crassidens — Conrad (1853)
Quadrula (sec. Crenodonta) trapezoides — Simpson (1900), Simpson (1914)
Unio (s.s.) trapezoides — Call (1900)
Plectomerus trapezoides — Ortmann & Walker (1922)
Amblema (Plectomerus) dombeyana — Frierson (1927)
Plectomerus dombeyana — R.I. Johnson (1969), Oesch (1984)
Plectomerus dombeyanus — Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008)

Bariosta ponderosus Rafinesque, 1831
Rafinesque, 1831, Continuation: 2.
Rafinesque, 1864, [in] Binney & Tryon, reprint: 73.

Bariosta ponderosus — Rafinesque (1831), Simpson (1900), Simpson (1914)
Unio niger — Ferussac (1835)
Unio (Limnium sec. Bariosta) ponderosus — Fischer (1887)
Plectomerus trapezoides — Ortmann & Walker (1922)
Amblema (Plectomerus) dombeyana — Frierson (1927)
Plectomerus dombeyanus — Burch (1975), Howells et al. (1996)
Plectomerus dombeyana — Oesch (1984)

Lasmigona ponderosa Rafinesque, 1831
Rafinesque, 1831, Continuation: 5.
Rafinesque, 1864, [in] Binney & Tryon, reprint: 79.

Lasmigona ponderosa — Rafinesque (1831)
Alasmodonta ponderosa — Ferussac (1835)

Unio interruptus Say, 1831
Say, 1831, Transylvania J. Med. Assoc. Sci. 4: 525.
Say, 1832, Amer. Conch. 4: pl. 33.
(homonym of Unio (Eurynia) solenoides var. interrupta Rafinesque, 1820)

Unio interruptus — Say (1831)
Unio trapezoïdes — Ferussac (1835)
Margarita (Unio) trapezoides — Lea (1836), Lea (1838)
Unio trapezoides — Hanley (1843), Küster (1862), Reeve (1864), Call (1895)
Margaron (Unio) trapezoides — Lea (1852), Lea (1870)
Plectomerus crassidens — Conrad (1853)
Quadrula (sec. Crenodonta) trapezoides — Simpson (1900), Simpson (1914)
Plectomerus trapezoides — Ortmann & Walker (1922)
Amblema (Plectomerus) dombeyana — Frierson (1927)
Plectomerus dombeyanus — Haas (1969), Burch (1975), Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008)
Plectomerus dombeyana — Oesch (1984)

Unio trapezoides Lea, 1831
Lea, 1831, Trans. Amer. Phil. Soc. 4 [O. 1]: 69 [79], pl. 3, fig. 1.
Type(s): FIGURED SYNTYPE USNM_84103, Lake St. Joseph, Mis.

Unio trapezoides — Lea (1831), Lea (1834), Jay (1835), Hanley (1843), Küster (1862), Reeve (1864), B.H. Wright (1888), Singley (1893), Call (1895), Pilsbry & Rhoads (1896)
Unio trapezoïdes — Ferussac (1835)
Margarita (Unio) trapezoides — Lea (1836), Lea (1838)
Complanaria trapezius — Agassiz (1852)
Margaron (Unio) trapezoides — Lea (1852), Lea (1870)
Plectomerus crassidens — Conrad (1853)
Unio (Diplodon) trapezoides — Adams & Adams (1857)
Quadrula (sec. Crenodonta) trapezoides — Simpson (1900), Simpson (1914)
Unio (s.s.) trapezoides — Call (1900)
Quadrula trapezoides — Ortmann (1909)
Crenodonta trapezoides — Ortmann (1912)
Plectomerus trapezoides — Ortmann & Walker (1922)
Amblema (Plectomerus) dombeyana — Frierson (1927)
Plectomerus dombeyanus — Haas (1969), Burch (1975), R.I. Johnson (1980), Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008), Williams et al. (2014), Graf & Cummings (2021)
Plectomerus dombeyana — Oesch (1984), Vidrine (1993)

Unio dombeiana Ferussac, 1835
‘Valenciennes’ of Authors.
Ferussac, 1835, Mag. Zool. 5: 27, 33.
Hanley, 1843, Illustr. Descr. Cat. Rec. Bivalve Shells: 175.
(error for Unio dombeyana Valenciennes, 1827)

Unio dombeiana — Ferussac (1835)

Complanaria trapezius Agassiz, 1852
Agassiz, 1852, Arch. Naturg. 18(1): 49.
(error for Unio trapezoides Lea, 1831)

Complanaria trapezius — Agassiz (1852)

Quadrula trapezoides var. pentagonoides Frierson, 1902
Frierson, 1902, Nautilus 16(4): 39.
Frierson, 1927, Check List N. Amer. Naiades: 62 [as ‘A. (Plectomerus) dombeyana’].
(intro'd as intra-sp. of Unio trapezoides Lea, 1831)
Type(s): LECTOTYPE ANSP_128928, Lake Charles, La.

Quadrula trapezoides var. pentagonoides — Frierson (1902)
Quadrula (sec. Crenodonta) trapezoides var. pentagonoides — Simpson (1914)
Amblema (Plectomerus) dombeyana — Frierson (1927)
Plectomerus dombeyanus — Haas (1969), Parmalee & Bogan (1998)

Taxonomic History (since 1900)

Quadrula (sec. Crenodonta) trapezoides — Simpson (1900), Simpson (1914)
Unio (s.s.) trapezoides — Call (1900)
Bariosta ponderosus — Simpson (1900), Simpson (1914)
Quadrula trapezoides var. pentagonoides — Frierson (1902)
Quadrula trapezoides — Ortmann (1909)
Crenodonta trapezoides — Ortmann (1912)
Quadrula (sec. Crenodonta) trapezoides var. pentagonoides — Simpson (1914)
Plectomerus trapezoides — Ortmann & Walker (1922)
Amblema (Plectomerus) dombeyana — Frierson (1927), Haas (1969)
Amblema dombeyana — Thiele (1934)
Plectomerus dombeyana — R.I. Johnson (1969), Oesch (1984), Vidrine (1993)
Plectomerus dombeyanus — Haas (1969), Burch (1975), Gordon et al. (1979), R.I. Johnson (1980), ..., Stodola et al. (2021), Graf & Cummings (2021), Hopper et al. (2023), Freeman et al. (2025)
Amblema dombeyanus — Davis & Fuller (1981)

Page updated: 07:54:30 Tue 01 Jul 2025

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