species Alasmidonta marginata Say, 1818: synonymy

Alasmidonta marginata Say, 1818

Say, 1818. Jour. Acad. Nat. Sci. 1(11): 459.
Say, 1819. Nich. Encyc. 4: sp. 1.
Say, 1858. [in] Binney, Compl. Writings T. Say: 62.

Alasmidonta (Rugifera) marginata — Simpson (1900), Ortmann (1909), Simpson (1914)
Unio (Margaritana) marginata — Call (1900)
Alasmidonta marginata — Fox (1901), Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912), ... Hopper et al. (2023), Dai et al. (2025), Perkins et al. (2025), FMCS (2025), Chen et al. (2025)
Alasmidonta (Decurambis) marginata — Ortmann (1918), Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), F.C. Baker (1928), Haas (1969), Haas (1969), R.I. Johnson (1970), Clarke (1981), Graf & Cummings (2007), Campbell & Lydeard (2026)
Decurambis marginata — Frierson (1927)
Alasmidonta (s.s.) marginata — Burch (1975)
Alasmidonta sp. — Araujo et al. (2018)

Unio rugulosus Wood, 1828

Wood, 1828. Suppl. Index Testac.: 3 [as ‘Mya rugulosa’]. [nomen nudum]
Wood, 1828. Suppl. Index Testac.: 57, pl. 1, sp. 7.

Alasmidonta (Rugifera) marginata — Simpson (1900)
Alasmidonta (Rugifera) varicosa — Simpson (1914)
Alasmidonta (Decurambis) varicosa — R.I. Johnson (1970)
Alasmidonta (s.s.) varicosa — Burch (1975)
Alasmidonta (Decurambis) marginata — Clarke (1981)
Alasmidonta marginata — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Decurambis scriptum Rafinesque, 1831

Rafinesque, 1831. Continuation: 5.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 80.

Alasmidonta (Decurambis) marginata — Ortmann & Walker (1922), F.C. Baker (1928), Haas (1969), Haas (1969), Clarke (1981), Graf & Cummings (2007)
Decurambis marginata — Frierson (1927)
Alasmidonta (s.s.) marginata — Burch (1975)
Alasmidonta marginata — Williams et al. (2008), Watters et al. (2009)

Alasmodonta truncata ‘Say, in lit.’ of Authors

(intro'd as syn of Alasmidonta marginata Say, 1818)
‘Say, in lit.’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 44.
Lea, 1838. Synopsis Fam. Naiades: 27.
Agassiz, 1852. Arch. Naturg. 18(1): 46.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 262.

Alasmidonta (Rugifera) truncata — Simpson (1900)
Alasmidonta (Rugifera) marginata — Simpson (1914)
Decurambis marginata — Frierson (1927)
Alasmidonta (Decurambis) marginata — Haas (1969)
Alasmidonta marginata — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Margaritana marginata ‘Say’ of Authors

(reference to Alasmidonta marginata Say, 1818)
‘Say’ of Authors.
Küster, 1862. Conchyl. Cab. 9(2): 297, pl. 99, fig. 3.
Sowerby, 1866. Conch. Icon. 16: pl. 51, sp. 267.

Alasmidonta (Rugifera) truncata — Simpson (1900)
Alasmidonta (Rugifera) marginata — Simpson (1914)
Alasmidonta marginata — Watters et al. (2009)

Margaritana marginata var. truncata B.H. Wright, 1898

(intro'd as intra-sp. of Alasmidonta marginata Say, 1818)
B.H. Wright, 1898. Nautilus 11(11): 124.
LECTOTYPE USNM_150545, Clinch R., Va.

Alasmidonta (Rugifera) truncata — Simpson (1900)
Alasmidonta marginata — Ortmann (1909), R.I. Johnson (1980), Strayer & Jirka (1997), Watters et al. (2009)
Alasmidonta (Rugifera) marginata — Ortmann (1909)
Alasmidonta (Decurambis) marginata truncata — F.C. Baker (1928)
Alasmidonta (Decurambis) marginata — Clarke (1981)

Unio calceolus f.a sciotincola de Gregorio, 1914

(intro'd as intra-sp. of Unio calceolus Lea, 1828)
de Gregorio, 1914. Il Nat. Siciliano 2: 54, pl. 9, figs. 3a-d.

Unio calceolus f.a sciotincola — de Gregorio (1914)
Alasmidonta marginata — Watters et al. (2009)

Alasmidonta (Decurambis) marginata susquehannae Ortmann, 1919

(intro'd as intra-sp. of Alasmidonta marginata Say, 1818)
Ortmann, 1919. Mem. Carnegie Mus. 8(1): 187, pl. 12, fig. 4.
LECTOTYPE CM_61.4679 (by Parodiz, 1967: 26), Susquehanna River, Selins Grove, Snyder County, Pennsylvania.

Decurambis marginata — Frierson (1927)
Alasmidonta (Decurambis) marginata — Haas (1969), Clarke (1981)
Alasmidonta (s.s.) marginata — Burch (1975)
Alasmidonta marginata — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Alasmidonta (Decurambis) marginata variabilis F.C. Baker, 1928

(intro'd as intra-sp. of Alasmidonta marginata Say, 1818)
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 194, pl. 69, figs. 4-9.
LECTOTYPE UMMZ_209183 (by Franzen, 1957: 33), Red Cedar R., Chetek, Wis.

Alasmidonta (Decurambis) marginata variabilis — F.C. Baker (1928)
Alasmidonta marginata — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Alasmidonta (Decurambis) marginata — Clarke (1981)

Decurambis literata Rafinesque, 1831

(intro'd as syn of Decurambis scriptum Rafinesque, 1831)
Rafinesque, 1831. Continuation: 5. [nomen nudum]
Rafinesque, 1864. [in] Binney & Tryon, reprint: 80.

Mya regulosa Lea, 1836

(error for Unio rugulosus Wood, 1828)
‘Wood’ Lea, 1836. Synopsis Fam. Naiades: 44.
‘Wood’ Lea, 1838. Synopsis Fam. Naiades: 27.
‘Wood’ Lea, 1852. Synopsis Fam. Naiades: 42.
‘Wood’ Lea, 1870. Synopsis Fam. Naiades: 67.