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The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)
FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!
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Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Psoronaias species Psoronaias guatemalensis (Simpson, 1900): synonymy
16 specimens + 2 Genbank vouchers Quadrula guatemalensis Simpson, 1900
  Simpson, 1900. Proc. Acad. Nat. Sci. 52: 83, pl. 2, fig. 4.
Simpson, 1900. Proc. U.S. Nat. Mus. 22: 796.
Simpson, 1914. Descr. Cat. Naiades: 909.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_128991, Usumacinta River, Guatemala.
Quadrula (Rotundaria) guatemalensis — Simpson (1900), Simpson (1914)
Quadrula guatemalensis — Simpson (1900)
Psoronaias guatemalensis — Frierson (1927), Graf & Cummings (2021), Czaja et al. (2023)
Amblema (Psorula) guatemalensis — Haas (1930)
Psorula guatemalensis — Haas (1969), Graf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Inoue et al. (2020), Freeman et al. (2025)
Psoronaias kuxensis — Cummings et al. (2025) | |
Psoronaias kuxensis Frierson, 1917
 Frierson, 1917. Nautilus 31: 48, pl. 7, figs. 1-2.
Frierson, 1927. Check List N. Amer. Naiades: 64, sp. 282.
Type(s): HOLOTYPE (ORIG. DESIG.) ANSP_117094, Kux Creek, Chama, Guatemala.
Psoronaias kuxensis — Frierson (1917), Frierson (1927), Haas (1929), Haas (1930), van der Schalie (1940), Haas (1969), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Cummings et al. (2025) | |
Elliptio divaricatus Marshall, 1926
 Marshall, 1926. Proc. U.S. Nat. Mus. 69(2638): 5, pl. 1, figs. 1-2; pl. 3, fig. 3.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_362398, Finca de Providencia, Guatemala.
Psoronaias kuxensis — Cummings et al. (2025) | |
Elliptio (Nephronaias) hermanni Haas, 1929
 Haas, 1929. Senckenbergiana 11: 323, figs. 12-13.
Haas, 1969. Das Tierreich 88: 194.
Type(s): HOLOTYPE (ORIG. DESIG.) SMF_3488, Mexico: Arroyo Limón, Staat Tabasco.
Elliptio (Nephronaias) hermanni — Haas (1929)
Nephronaias (s.s.) hermanni — Haas (1969)
Nephronaias hermanni — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023)
Psoronaias kuxensis — Cummings et al. (2025) | |
Taxonomic History (since 1900)Quadrula (Rotundaria) guatemalensis — Simpson (1900), Simpson (1914)
Quadrula guatemalensis — Simpson (1900)
Psoronaias kuxensis — Frierson (1917), Frierson (1927), Haas (1929), Haas (1930), van der Schalie (1940), Haas (1969), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Cummings et al. (2025)
Psoronaias guatemalensis — Frierson (1927), Graf & Cummings (2021), Czaja et al. (2023)
Elliptio (Nephronaias) hermanni — Haas (1929)
Amblema (Psorula) guatemalensis — Haas (1930)
Psorula guatemalensis — Haas (1969), Graf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Inoue et al. (2020), Freeman et al. (2025)
Nephronaias (s.s.) hermanni — Haas (1969)
Nephronaias hermanni — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023)
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