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 scriptum — Simpson (1900), Simpson (1914)
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

‘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.
(intro'd as syn of Alasmidonta marginata Say, 1818)

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

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

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

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

B.H. Wright, 1898. Nautilus 11(11): 124.
(intro'd as intra-sp. of Alasmidonta marginata Say, 1818)
Type(s): 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

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

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

Alasmidonta (Decurambis) marginata susquehannae Ortmann, 1919

Ortmann, 1919. Mem. Carnegie Mus. 8(1): 187, pl. 12, fig. 4.
(intro'd as intra-sp. of Alasmidonta marginata Say, 1818)
Type(s): 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

F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 194, pl. 69, figs. 4-9.
(intro'd as intra-sp. of Alasmidonta marginata Say, 1818)
Type(s): 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

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

Mya regulosa Lea, 1836

‘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.
(error for Unio rugulosus Wood, 1828)