species Fusconaia masoni (Conrad, 1834): synonymy

Unio masoni Conrad, 1834

Conrad, 1834. New Fresh-Water Shells: 34, pl. 5, fig. 2.
Conrad, 1836. Monogr. Fam. Unionidae 1(3): 28, pl. 12, fig. 2.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 252.

Unio (sec. Elliptio) masoni — Simpson (1900), Simpson (1914)
Elliptio (s.s.) masoni — Frierson (1927), Haas (1969)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Burch (1975), Davis & Fuller (1981), Johnson & Clarke (1983), Turgeon et al. (1988), Williams et al. (1993), ... FMCS (2021), Bolotov et al. (2022), Hopper et al. (2023), Hauck et al. (2023), FMCS (2025)

Unio pumilis ‘Lea’ of Authors

‘Lea’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 20.
Lea, 1838. Synopsis Fam. Naiades: 17.
Lea, 1852. Synopsis Fam. Naiades: 24.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 255.
(error for Unio pumilus Lea, 1838)

Unio subplanus Conrad, 1837

Conrad, 1837. Monogr. Fam. Unionidae 1(9): 73, pl. 41, fig. 1.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 258.

Unio (sec. Elliptio) subplanus — Simpson (1900)
Pleurobema (s.s.) subplanum — Simpson (1914)
Lexingtonia subplana — Ortmann (1914), Thiele (1934), Haas (1969), Haas (1969), Burch (1975), ... Turgeon et al. (1998), Graf & Cummings (2007), Cummings & Graf (2010), ITIS (2012), Jones (2015)
Pleurobema (Lexingtonia) subplanum — Frierson (1927)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Williams et al. (2008), Campbell & Lydeard (2012), Williams et al. (2017), Graf & Cummings (2021)
Fusconaia subplana — Bogan (2010)

Unio pumilus Lea, 1838

Lea, 1836. Synopsis Fam. Naiades: 20 [as ‘pumilis’]. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 23, pl. 7, fig. 17.
Type(s): HOLOTYPE USNM_84545, Black Cr., N.C.

Quadrula (sec. Fusconaia) pumila — Simpson (1900), Simpson (1914)
Pleurobema (Lexingtonia) subplanum — Frierson (1927)
Lexingtonia subplana — Haas (1969)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Burch (1975)

Unio utriculus Lea, 1845

Lea, 1845. Proc. Amer. Phil. Soc. 4: 164.
Lea, 1848. Trans. Amer. Phil. Soc. 10 [O. 4]: 69 [43], pl. 1, fig. 3.
Type(s): HOLOTYPE USNM_85172, N.C.

Quadrula (sec. Fusconaia) utriculus — Simpson (1900)
Pleurobema (s.s.) utriculum — Simpson (1914)
Pleurobema (Lexingtonia) utriculum — Frierson (1927)
Lexingtonia utriculus — Haas (1969)
Lexingtonia utricula — Graf & Cummings (2007), Cummings & Graf (2010)
Fusconaia masoni — Graf & Cummings (2021)

Unio merus Lea, 1852

Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 260 [16], pl. 15, fig. 10.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 251. [nomen nudum]
Type(s): HOLOTYPE USNM_85698, Abbeville District, S.C.

Unio (sec. Elliptio) merus — Simpson (1900), Simpson (1914)
Elliptio (s.s.) masoni — Frierson (1927), Haas (1969)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Burch (1975)

Unio striatulus Lea, 1857

Lea, 1857. Proc. Acad. Nat. Sci. 9: 86.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 8]: 55 [59], pl. 2, fig. 202.
Type(s): HOLOTYPE USNM_84548, Roanoke R., Weldon, N.C.

Unio (sec. Elliptio) striatulus — Simpson (1900)
Pleurobema (s.s.) striatulum — Simpson (1914)
Pleurobema (Lexingtonia) subplanum — Frierson (1927)
Lexingtonia subplana — Haas (1969)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Burch (1975)

Unio castus Lea, 1860

Lea, 1860. Proc. Acad. Nat. Sci. 12: 306.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 8]: 349 [31], pl. 57, fig. 174.
Type(s): HOLOTYPE USNM_84782, S.C.

Unio (sec. Elliptio) merus — Simpson (1900), Simpson (1914)
Unio castus — de Gregorio (1914)
Pleurobema (Lexingtonia) castum — Frierson (1927)
Lexingtonia casta — Haas (1969)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Burch (1975)

Unio brimleyi S.H. Wright, 1897

S.H. Wright, 1897. Nautilus 10(12): 138.
Type(s): LECTOTYPE USNM_149651, Neuse Riv., Raleigh, N.C.

Unio (sec. Elliptio) brimleyi — Simpson (1900)
Unio brimleyi — Simpson (1900)
Pleurobema (s.s.) brimleyi — Simpson (1914)
Pleurobema (Lexingtonia) subplanum — Frierson (1927)
Lexingtonia subplana — Haas (1969)
Pleurobema (Lexingtonia) masoni — R.I. Johnson (1970)
Fusconaia masoni — Burch (1975)

Parreysia robsoni Frierson, 1927

‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 36, sp. 198 [as ‘Unio pumilus’].
Frierson, 1927. Check List N. Amer. Naiades: 45.
(new name for Unio pumilus Sowerby, 1866)
Type(s): HOLOTYPE BMNH_1965150, Loc._ ?

Parreysia robsoni — Frierson (1927)
Parreysia favidens — Haas (1969)
Fusconaia masoni — Bolotov et al. (2022)

Unio pumilus Sowerby, 1866

‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 36, sp. 198.
(reference to Unio pumilus Lea, 1838)
Type(s): BMNH_1965150, Loc._ ?

Quadrula (sec. Fusconaia) pumila — Simpson (1900)
Parreysia robsoni — Frierson (1927)
Parreysia favidens — Haas (1969)
Fusconaia masoni — Bolotov et al. (2022)

Unio castus Simpson, 1900

‘Lea’ Simpson, 1900. Proc. U.S. Nat. Mus. 22: 708.
(reference to Unio castus Lea, 1860)

Elliptio (s.s.) masoni — Frierson (1927), Haas (1969)