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Page last updated
Wed 1 October 2025

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!

Search the database pages:

Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Psoronaias

species Psoronaias semigranosa (von dem Busch in Philippi, 1843): specimens
     2 available nominal species synonyms

Recent Taxonomic Opinions

Psoronaias semigranosaGraf & Cummings (2007), Bogan (2010), Pfeiffer et al. (2019), Pfeiffer et al. (2019), Inoue et al. (2020), Smith et al. (2020), Graf & Cummings (2021), Czaja et al. (2023), Freeman et al. (2025), Cummings et al. (2025)
Psoronaias herreraeGraf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023)

Range

Known from the San Fernando, Carrizal, and Pánuco basins, Mexico.

Map of Georeferenced Specimens

species map


Mexico

specimen
ANSP_125583

“Texas”

specimen
ANSP_125583

“Texas”

specimen
ANSP_129925

“Texas”

specimen
USNM_347183

Estera del Avileno, Tamaulipas, Mexico

specimen
USNM_347183

Estera del Avileno, Tamaulipas, Mexico

specimen
USNM_347183

Estera del Avileno, Tamaulipas, Mexico

specimen
USNM_347184

Estera del Avileno, Tamaulipas, Mexico

specimen
UF_267279

Lago de Jalpan, Queretaro, Mexico

specimen
UF_267279

Lago de Jalpan, Queretaro, Mexico

specimen
INHS_89427

Laguna la Nacha, 28 km E of San Fernando, 118 km SSW of Matamoros, Tamaulipas, Mexico

specimen
AMNH_51408

Mexico

specimen
BMNH_1907-10-28-261

Mexico

specimen
MCZ_221685

Mexico

specimen
ZMB_MP_0475

Mexico

specimen
MCZ_152861

near Tampico, Mexico

specimen
USNM_220015

Panuco R., Tampico, Mexico

specimen
USNM_1282609

Rio Carrizal, at Rt. Mex. 180 in Nuevo Progreso, ca. 20.8 mi N of road divergence (on Rt. Mex. 180) to Aldma and Est. Manuel, Tamaulipas, Mexico

specimen
INHS_89444

Rio Pánuco, 18 km WSW of Panuco, 55 km SW of Tampico [Oviedo], Tamaulipas, Mexico

specimen
NCSM_61424

Rio Pánuco, at Pánuco, Vera Cruz

specimen
MCZ_270065

Rio Panuco, Mexico

specimen
USNM_84334

Rio Panuco, near Tampico, Mexico

specimen
USNM_84334

Rio Panuco, near Tampico, Mexico

specimen
NCSM_61426

Rio Sabinas, Hwy. 85, @18 km E Gomez Farias, Tamaulipas, Mexico

specimen
INHS_89433

Rio San Fernando, Cisneros Bridge, Tamaulipas, Mexico

specimen
INHS_89439

Rio Tampaón [22 km SSW of Ciudad Valles, 38 km S of Tamuin, 132 km WSW of Tampico], San Luis Potosi, Mexico

specimen
USNM_1282607

Rio Tamuin [Tampaón], at Mex. 85 just S of Alvero Obregon, S of Ciudad Valles, San Luis Potosi, Mexico.

specimen
USNM_1282620

Rio Tamuin [Tampaón], at Mex. 85 just S of Alvero Obregon, S of Ciudad Valles, San Luis Potosi, Mexico.

specimen
USNM_1282608

San Luis Potosi, Rio Huichiuayan at road to Xilitla ca. 0.7 road miles from its junction with Rt. Mex. 85 (this junction is ca. 43.6 roadmiles S of junction of Rt. Mex. 85 and Rt. Mex. 70 in Ciudad Valles). N21°25'30" W9?°54'30"

specimen
USNM_1282621

San Luis Potosi, Rio Huichiuayan at road to Xilitla ca. 0.7 road miles from its junction with Rt. Mex. 85 (this junction is ca. 43.6 roadmiles S of junction of Rt. Mex. 85 and Rt. Mex. 70 in Ciudad Valles). N21°25'30" W9?°54'30"

specimen
AMNH_30508

Tampico, Mexico

specimen
BMNH_MP_415

Tampico, Mexico

specimen
ZMB_MP_0483

Tampico, Mexico

specimen
ZMB_MP_0487

Tampico, Mexico


unknown

specimen
ZMB_MP_0467

[no locality available - Central America]

specimen
ZMB_MP_0467

[no locality available - Central America]