Unio subrostratus Say, 1831
Say, 1831. New Harm. Dissem. 1(29): [no pagination].
Say, 1858. [in] Binney, Compl. Writings T. Say: 134, 225.
Type(s): NEOTYPE SMF_4348, N. Amerika.

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Unio (s.s.) subrostratus — Call (1900)
Eurynia (s.s.) subrostrata — Ortmann (1912), Ortmann (1916), Utterback (1916)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
Lampsilis (Ligumia) subrostrata — Frierson (1927), Haas (1930)
Ligumia subrostratus — F.C. Baker (1928)
Ligumia subrostrata — Murray & Leonard (1962), Haas (1969), Gordon et al. (1979), R.I. Johnson (1980), Oesch (1984), ... Cummings & Graf (2010), ITIS (2012), Haag (2012), McMurray et al. (2012), Williams et al. (2017)
Sagittunio subrostratus — Watters (2018), Graf & Cummings (2021), Bieler (2021), FMCS (2021), FMCS (2025)
L. subrostrata — Marshall et al. (2018)
Sagittunio subrostrata — Hopper et al. (2023)

Unio nashvillianus Lea, 1834
Lea, 1834. Trans. Amer. Phil. Soc. 5 [O. 1]: 100, pl. 14, fig. 43.
Type(s): HOLOTYPE USNM_85114, Nashville, Tenn.

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
— de Gregorio (1914)
Micromya vanuxemensis — Ortmann (1924)
Ligumia subrostrata — Haas (1969), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Ligumia nasuta — Burch (1975)
Sagittunio subrostratus — Watters (2018), Bieler (2021)

Unio mississippiensis Conrad, 1850
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 277, pl. 38, fig. 11.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.
Type(s): HOLOTYPE MCZ_178777, Tributary of the Lower Mississippi, Louisiana.

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
Eurynia (s.s.) subrostrata — Utterback (1916)
Lampsilis (Ligumia) subrostrata — Frierson (1927)
Ligumia subrostrata — Haas (1969), Oesch (1984), Vidrine (1993), Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sagittunio subrostratus — Watters (2018)

Lampsilis nashvillensis Agassiz, 1852
‘Lea’ of Authors.
Agassiz, 1852. Arch. Naturg. 18(1): 44.
Lea, 1870. Synopsis Fam. Naiades: 45.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [4].
Ortmann, 1924. Amer. Midl. Nat. 9(1): 32.
(error for Unio nashvillianus Lea, 1834)

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
Lampsilis (Ligumia) subrostrata — Frierson (1927)
Ligumia subrostrata — Parmalee & Bogan (1998)
Sagittunio subrostratus — Watters (2018), Bieler (2021)

Unio rutersvillensis Lea, 1859
Lea, 1859. Proc. Acad. Nat. Sci. 11: 155.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 8]: 356 [38], pl. 60, fig. 181.
Type(s): HOLOTYPE USNM_84976, Clear Creek, Rutersville, Fayette Co., Texas.

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
Lampsilis (Ligumia) subrostrata — Frierson (1927)
Ligumia subrostrata — Haas (1969), Vidrine (1993), Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sagittunio subrostratus — Watters (2018)

Unio cocoduensis Reeve, 1865
‘White MS’ Reeve, 1865. Conch. Icon. 16: pl. 24, sp. 117.
Type(s): HOLOTYPE BMNH_1965187, Hab._?

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
Lampsilis (Ligumia) subrostrata — Frierson (1927)
Ligumia subrostrata — Haas (1969), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sagittunio subrostratus — Watters (2018)

Unio topekaensis Lea, 1868
Lea, 1868. Proc. Acad. Nat. Sci. 20: 144.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 313 [73], pl. 49, fig. 126.
Type(s): FIGURED SYNTYPE USNM_84978, Falls City, Nebraska.

Lampsilis (sec. Eurynia) subrostratus — Simpson (1900)
Lampsilis (Eurynia) subrostrata — Simpson (1914)
Eurynia (s.s.) subrostrata — Utterback (1916)
Lampsilis (Ligumia) subrostrata — Frierson (1927)
Ligumia subrostrata — Murray & Leonard (1962), Haas (1969), Oesch (1984), Howells et al. (1996), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sagittunio subrostratus — Watters (2018)

Lampsilis (Eurynia) subrostrata var. furva Simpson, 1914
Simpson, 1914. Descr. Cat. Naiades: 100.
(intro'd as intra-sp. of Unio subrostratus Say, 1831)
Type(s): LECTOTYPE USNM_126921 (by R.I. Johnson, 1975: 13), Lake at Warsaw, Indiana.

Lampsilis (Eurynia) subrostrata var. furva — Simpson (1914)
Lampsilis (Ligumia) subrostrata-furva — Frierson (1927)
Ligumia subrostrata — Haas (1969), R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sagittunio subrostratus — Watters (2018)

Unio topekensis Utterback, 1916
‘Lea’ of Authors.
Utterback, 1916. Amer. Midl. Nat. 4(10): 438.
Oesch, 1984. Missouri Naiades: 198.
(error for Unio topekaensis Lea, 1868)

Unio mississippianus Küster, 1861
‘Conrad’ Küster, 1861. Conchyl. Cab. 9(2): 245.
(error for Unio mississippiensis Conrad, 1850)

Unio nashvilleensis Lea, 1874
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 68 [as ‘nashvilleënsis’].
(error for Unio nashvillianus Lea, 1834)

Sagittunio subrostratus — Bieler (2021)

Margaron (Unio) nashvilliensis Simpson, 1900
‘Lea’ Simpson, 1900. Proc. U.S. Nat. Mus. 22: 547.
(error for Lampsilis nashvillensis Agassiz, 1852)