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!
Bivalvia | ... | Ambleminae | Popenaiadini | Psoronaias semigranosa nominal species Quadrula rudis Simpson, 1900   Simpson, 1900. Proc. Acad. Nat. Sci. 52: 82, pl. 3, fig. 2.
Simpson, 1914. Descr. Cat. Naiades: 910.
Type(s): HOLOTYPE (MONOTYPY) USNM_84210, Rio Taxtunilha, (tributary to the Rio de la Pasion), Guatemala.
= Psoronaias semigranosa Taxonomic Opinions= Psorula rudis (Simpson, 1900) — Freeman et al., 2025 + Psoronaias semigranosa (von dem Busch in Philippi, 1843) — Graf & Cummings, 2021 = Psorula rudis — Inoue et al., 2020 = Psorula rudis (Simpson, 1914) — Pfeiffer et al., 2019 = Psorula rudis Simpson, 1900 — Bogan, 2010 = Psorula rudis (Simpson, 1900) — Graf & Cummings, 2007 = Psorula rudis (Simpson, 1900) — Haas, 1969 + Psoronaias semigranosus (von dem Busch, 1845) — Goodrich & van der Schalie, 1937 = Amblema (sec. Psorula) rudis (Simpson) — Thiele, 1934 = Amblema (Psorula) rudis (Simpson) — Haas, 1930 = Rotundaria rudis (Simpson) — Haas, 1929 = Psoronaias rudis (Simpson, 1900) — Frierson, 1927 = Quadrula (Rotundaria) rudis Simpson, 1900 — Simpson, 1914 + — Simpson, 1900 = Quadrula rudis Simpson — Simpson, 1900
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