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Unionidae

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freshwater mussels
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Geography

Species Richness & Endemism of
freshwater mussels
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Data last updated
Thu 22 January 2026

species Diplodon rhuacoicus (d’Orbigny, 1835): specimens

4 available nominal species synonyms (8 total synonyms)

Recent Taxonomic Opinions

Diplodon rhuacoicus — Graf & Cummings (2007), Bogan (2010), Mansur et al. (2020), Graf & Cummings (2021), Torres et al. (2024)
Diplodon (s.s.) rhuacoicus — Rumi et al. (2008), Pereira et al. (2014), Torres et al. (2018)

Range

Paraná and Uruguay rivers and adjacent Atlantic streams from Rio de Janeiro, Brazil to Uruguay.

Map of Georeferenced Specimens

specimens map of Diplodon rhuacoicus

MUSSELp Specimen Records

SMF_11104
Rio Concepcion ?

Argentina

FMNH_216459
Gualeguaychu, Prov. Entre Rios, Argentina

Brazil

UMMZ_111246 Brazil	UMMZ_111246 Brazil	UMMZ_111246 Brazil
UMMZ_22923 Brazil	UMMZ_22923 Brazil	UMMZ_110963 Brazil
UMMZ_110963 Brazil	ZMB_MP_0344 Cargo da Concep fai perte Villa St Anna Distr. Macacu, Prov Rio de Jan	ZMB_17074 Fl. Guahyba, S Brasil
FMNH_48304 Itaguay, Est. Rio de Janeiro, Brazil	AMS_126880 Itaguay, Estado do Rio, Brazil	AMS_126880 Itaguay, Estado do Rio, Brazil
AMS_126880 Itaguay, Estado do Rio, Brazil	SMF_11102 Lagoa da Volta, Kuste d St. Rio Gr. do Sul, Bras.	UF_270593 Os Perus, São Paulo, Brazil
USNM_162419 Os Perus, Sao Paulo, Brazil	SMF_11110 Os Perus, St. Sao Paulo, Bras.	UF_270587 Ponte Grande, São Paulo, Brazil
SMF_11096 Rio Camaguam, Sr. Rio Gr. do S., Bras.	SMF_11107 Rio Camaguam, Sr. Rio Grande do Sul, Bras.	ZMB_MP_0382 Rio Concisai [?], Prov Rio de Janeiro, Brasilian
UF_270602 Rio De Janeiro, Brazil	USNM_128818 Rio Grande, trib of Rio Tiete, Sau Paulo, Brazil	SMF_11108 Rio Guahyba, St. Rio Grande do Sul, Bras.
SMF_11093 Rio Lageado, Nebenfl. d Rio Uruguay bei N Wuerttemberg, St. Rio Gr. do Sul, Bras.	ZMB_MP_0385 Rio Negro, Rio de Janeiro	FMNH_115954 Rio Tiete, Est. Sao Paulo, Brazil
CM_61.5862 Rio Uruguay (mud), Uruguayana, Rio Grande do Sul, Brazil	SMF_11097 Rio Uruguaym Nonohay, N. Uruguay	SMF_11112 Sao Lourenco, St. Rio Gr do Sul, Bras.
SMF_11109 Sao Paulo, Bras.	UF_270615 São Paulo, Brazil	UF_270616 São Paulo, Brazil
UF_270617 São Paulo, Brazil	SMF_11106 Sud Brasilien	ZMB_MP_0320 Taguara de Mundo Novo
SMF_11103 Taguara do Mundo Novo, Sr. Rio Grande do Sul, Bras.

PUCRS_MCP_3212. Brazil: Rio Grande do Sul: (Atlantic Ocean - Logoa Dos Patos - Guaíba - Jacuí): rio Jacuí: Cachoeira do Sul

PUCRS_MCP_3214. Brazil: Rio Grande do Sul: (Atlantic Ocean - Logoa Dos Patos - Guaíba - Jacuí): rio Jacuí: Cachoeira do Sul

PUCRS_MCP_3636. Brazil: Rio Grande do Sul: (Atlantic Ocean - Logoa Dos Patos - Guaíba): rio Guaíba: Porto Alegre

PUCRS_MCP_10094. Brazil: Rio Grande do Sul: Caçapava do Sul: (Atlantic Ocean - Logoa Dos Patos): Arroio Bicca

PUCRS_MCP_7773. Brazil: Rio Grande do Sul: Candiota: (Atlantic Ocean - Logoa Dos Patos - Lagoa Mirim - Yaguaron): -31.84935 -53.87871

PUCRS_MCP_8419. Brazil: Rio Grande do Sul: Uruguaiana: (Río de la Plata - Uruguay): Arroio Sanchuri: Estação 9, Arroio Sanchuri, Afluente do Rio Uruguai, Municipio de Uruguaiana: -29.54560 -56.82234

FAPESP_C5144T42069. Brazil: São Paulo: Morungaba: (Río de la Plata - Paraná - Tietê - Piracicaba - Jaguari): rio Jaguari

FAPESP_C5148T42082. Brazil: São Paulo: Valinhos: (Río de la Plata - Paraná - Tietê - Piracicaba): rio Atibaia

Paraguay

FMNH_21841 Arroyo Mbobo, Villarrica, Paraguay	SMF_11111 Lagune des Arroyo Dona Juana Villarica, Paraguay	CM_MP_43 mountain creek at Sapucay, Paraguay
CM_MP_NO_1 mountain creek, Sapucay, SE of Asuncion, Paraguay	SMF_11091 Oberlauf des Rio Monday, Nebenfluss des Rio Parana, in Paraguay	SMF_640 Rio Paraguay, b. Conception, Paraguay
SMF_11092 Rio Paraná, b. Puerto Bertoni, Paraguay

Uruguay

CM_64.90 Arroyo Canelon Grande, Dept. Canelones, Uruguay	AMNH_306014 Arroyo Conventos, Uruguay	SMF_11095 Arroyo de los Molles, Uruguay
USNM_365400 Arroyo de los Vacas, Dept. Colonia, Uruguay	FMNH_70745 Arroyo Itabepi, Salto Uruguay	USNM_341375 Arroyo Manga, Dept. Montevideo, Uruguay
USNM_341375 Arroyo Manga, Dept. Montevideo, Uruguay	MCZ_212459 Arroyo Monzon, Cardona, Departmento de Soriano, Uruguay	SBMHN_140941 Arroyo Pando, Canelones, Uruguay
ANSP_396496 Arroyo Pando, Canelones, Uruguay	ANSP_396496 Arroyo Pando, Canelones, Uruguay	CM_64.86 Arroyo Pando, Dept. Canelones, Uruguay
FMNH_86706 Arroyo Pereira, Departmento de Colonia, Uruguay	SBMHN_367458 Arroyo Pereyra, Colonia, Uruguay	ANSP_249058 Arroyo Pereyra, Colonia, Uruguay
FMNH_70746 Arroyo Toledo, Canelones, Uruguay	CM_64.89 Arroyo Toledo, Dept. Canelones, Uruguay	INHS_24766 Arroyo Toledo, near the Carrasco Airport, close to Montevideo, Canelones, Uruguay
ANSP_334569 Arroyo Toledo, San Jose, Uruguay	CM_60-68 Arroyo Toledo, San Jose, Uruguay	SMF_11090 Cerro Largo, Uruguay
SMF_11098 Cerro Largo, Uruguay	FMNH_190543 Colonia, Uruguay	SMF_11094 Corrosco, Dept. Montevideo, Uruguay
FMNH_120332 Departmento de Canelones, Uruguay	ANSP_70252 freshwater lake nr. Maldonado, Uruguay	CM_61.70 Lago Potrero, Maldonado, Uruguay
SMF_14089 Laguna del Sauce, Maldonado, Uruguay	ANSP_69710 Lake Potrero, nr. Maldonado, Uruguay	ANSP_72630 Lake Potrero, nr. Maldonado, Uruguay
SMF_11101 Las Vaccas, Dept. Colonia, Uruguay	BMNH_54-12-4-838 Maldonado, Banda orientali, Uruguay	BMNH_54-12-4-838 Maldonado, Banda orientali, Uruguay
BMNH_54-12-4-838 Maldonado, Banda orientali, Uruguay	BMNH_54-12-4-838-1-3 Maldonado, Banda orientali, Uruguay	USNM_335775 Maldonado, Uruguay
ANSP_72632 Maldonado, Uruguay	ANSP_72632 Maldonado, Uruguay	SMF_11100 Montevideo
USNM_365401 no loc given (Colonia, Uruguay)	USNM_348738 Paysandu, Uruguay	UMMZ_219695 Proc. Lagunas de Arazati, Departmento de San Jose, Uruguay
USNM_347883 Rio Negro, Uruguay	FMNH_54048 Rio Olimar, Departmento de Treinta y Tres, Uruguay	FMNH_53761 Rio Olimar, Departmento de Treinta y Tres, Uruguay
UMMZ_110964 Rio Pentanozo; Riviere de Gentanesso qui se jette dans le Rio de la Plata, near Montevideo	UMMZ_110964 Rio Pentanozo; Riviere de Gentanesso qui se jette dans le Rio de la Plata, near Montevideo	UMMZ_110964 Rio Pentanozo; Riviere de Gentanesso qui se jette dans le Rio de la Plata, near Montevideo
CM_MP_42 Rio Queguay, road from Paysandu to Tacuarembo, near Lorenzo, Uruguay	SMF_11099 Rio Tacuarembo, Uruguay	SMF_11099 Rio Tacuarembo, Uruguay
UMMZ_248823 Rio Uruguay, Nueva Palmira, Departmento de Colonia, Uruguay	UMMZ_248823 Rio Uruguay, Nueva Palmira, Departmento de Colonia, Uruguay	UMMZ_248825 Rio Uruguay, Paysandu, Uruguay
UMMZ_248825 Rio Uruguay, Paysandu, Uruguay	USNM_380554 Rio Yaguaron, Cerro Largo, Uruguay	USNM_380554 Rio Yaguaron, Cerro Largo, Uruguay
USNM_380554 Rio Yaguaron, Cerro Largo, Uruguay	USNM_380556 Rio Yaguaron, Cerro Largo, Uruguay	USNM_381100 Rio Yaguaron, Dept. Cerro Largo, Uruguay
USNM_380756 Rio Yaguaron, Dept. Cerro Largo, Uruguay	USNM_425310 Rio Yaguaron, Dept. Cerro Largo, Uruguay	FMNH_21840 Uruguay
USNM_125737 Uruguay

Uruguay, Argentina, or Brazil

UF_270601
Uruguay River

Genbank Vouchers

There are no georeferenced Genbank vouchers for this species in the MUSSELpdb.