Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Popenaiadini

genus Psoronaias Crosse & Fischer, 1894: synonymy

5 Recent freshwater species (5 total species)

Synonymy

Psoronaias Fischer & Crosse, 1894

(intro'd as sub-gen. of Unio Retzius, 1788)
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 556.
Type species: Unio psoricus Morelet, 1851 (orig. desig.) = Psoronaias crocodilorum

Barynaias Fischer & Crosse, 1894

(intro'd as sub-gen. of Unio Retzius, 1788)
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 557.
Type species: Unio pigerrimus Crosse & Fischer, 1894 (orig. desig.) = Psoronaias crocodilorum

Martensnaias Frierson, 1927

(intro'd as sub-gen. of Elliptio Rafinesque, 1819)
Frierson, 1927. Check List N. Amer. Naiades: 38.
Type species: Unio rubicundus Martens, 1900 (orig. desig.) = Psoronaias rubicunda

Psorula Haas, 1930

(intro'd as sub-gen. of Amblema Rafinesque, 1820)
Haas, 1930. Senckenbergiana 12(6): 319.
Type species: Quadrula rudis Simpson, 1900 (orig. desig.) = Psoronaias crocodilorum

Proronaias Barraza et al., 2026

(error for Psoronaias Fischer & Crosse, 1894)
Barraza et al., 2026. Check List 22(4): Table 1.
Type species: Unio psoricus Morelet, 1851 = Psoronaias crocodilorum

Martinsnaias Lopes-Lima et al., 2017

(error for Martensnaias Frierson, 1927)
‘Frierson’ Lopes-Lima et al., 2017. MPE 106: 182.
Type species: Unio rubicundus Martens, 1900 = Psoronaias rubicunda

Taxonomic History (since 1900)

The Taxonomic History lists the ways authors have classified the species currently assigned to Psoronaias, since 1900.

Quadrula (Rotundaria) — Simpson (1900)
Unio (sec. Elliptio) — Simpson (1900)
Unio (Psoronaias) — Martens (1900)
Unio (Pleurobema) — Martens (1900)
Unio (Elliptio) — Martens (1900)
Quadrula — Simpson (1900), Pilsbry (1910)
Unio — Pilsbry (1910)
Unio (sec. Elliptio) (Group of U. semigranosus) — Simpson (1914)
Unio (sec. Elliptio) (Group of U. pigerrimus) — Simpson (1914)
Quadrula (Rotundaria) (Group of Q. ostreata) — Simpson (1914)
Psoronaias — Frierson (1917), Frierson (1927), Haas (1929), Haas (1930), Thiele (1934), ... Freeman et al. (2025), Cummings et al. (2025), Campbell & Lydeard (2026), Martínez et al. (2026), Barraza et al. (2026)
Elliptio (Martensnaias) — Frierson (1927)
Elliptio (Barynaias) — Frierson (1927), Haas (1929)
Elliptio (Nephronaias) — Haas (1929)
Rotundaria — Haas (1929)
Amblema (Psorula) — Haas (1930), Haas (1969)
Amblema (sec. Psorula) — Thiele (1934)
Elliptio (sec. Barynaias) — Thiele (1934)
Elliptio — Thiele (1934), Contreras-Arquieta (2000)
Barynaias — Morrison (1966), Haas (1969), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023)
Psorula — Haas (1969), Graf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Inoue et al. (2020), Freeman et al. (2025)
Nephronaias (s.s.) — Haas (1969)
Nephronaias (Martensnaias) — Haas (1969), Haas (1969)
Martensnaias — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021)
Nephronaias — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023)