species Anodontites trigona (Spix in Wagner, 1827): specimens

18 available nominal species synonyms (26 total synonyms)

Recent Taxonomic Opinions

Anodontites trigonus — Graf & Cummings (2007), Hoeh et al. (2009), Bogan (2010), IUCN (2011), Zieritz et al. (2015), Prié et al. (2026)
Anodontites (s.s.) puelchanus — Rumi et al. (2008), Pereira et al. (2014), Torres et al. (2018)
Anodontites (s.s.) trigonus — Rumi et al. (2008)
Anodontites (s.s.) trigonus gorginae [sic] — Rumi et al. (2008)
Anodontites trigona — Lasso et al. (2009), Graf & Cummings (2021), Breure et al. (2022), Torres et al. (2024), Nagel (2025), Campbell & Lydeard (2026), Martínez et al. (2026), Barraza et al. (2026)
Anodontites puelchanus — Mansur et al. (2020)
Anodontites elongatus — Mansur et al. (2020)
Anodontites puelchana — Torres et al. (2024)

Range

Patagonia and the Paraná Basin, Argentina, north through the Amazon to Colombia and Ecuador. (South America: SA1 SA2 SA3 SA5 SA6)

Map of Georeferenced Specimens

specimens map of Anodontites trigona

MUSSELp Specimen Records

Type Specimens

USNM_86724
Upper Amazon, Brazil
lectotype
Anodonta amazonensis Lea, 1860

ANSP_125430
Upper Amazon R.
paratype
Anodonta amazonensis Lea, 1860

CM_61.5832
headwaters of the Rio Paraguay, Santa Rita, Matto Grosso, Brazil
lectotype
Anodontites hasemani Ortmann, 1921

CM_61.5829
Rio Tapajós, Santarem, Pará, Brazil
lectotype
Anodontites hyrioides Ortmann, 1921

USNM_86731
Amazon River
holotype
Anodontites pallescens Simpson, 1914

SMF_4053
Rio Parana, Prov. Corrientes, Argentinien
syntype
Unio chiquitana d’Orbigny, 1835

SMF_3822
Maloya Sumpfe, Prov Corrientes, Argentinien
paralectotype
Unio limnoica d’Orbigny, 1835

FMNH_21483
Rio Ibari, Bolivia
cotype
Anodontites lizeri Doello-Jurado, 1924

Other Specimens by Country | show by collection

1 Specimens from [blank]

UF_270542
Probably Paraná

19 Specimens from Argentina

SMF_11949
Argentinien

USNM_607081
Arroyo Malabrigo, trib. Rio San Javier, Santa Fe, Argentina

USNM_86604
Corrientes R. S.A.

MCZ_111731
Corrientes, Argentina

SMF_11951
Corrientes, Argentinien

USNM_86518
Corrientes, S. Am.

AMS_126854
Guadalupe Lagoon, Parana River, Santa Fe, Argentina

FMNH_216436
La Matanza, Prov. Salta, Argentina

CM_MP_83
Laguna del Arroyo Malabrigo, Romang, Santa Fe, Argentina

CM_MP_84
Laguna del Arroyo Malabrigo, Romang, Santa Fe, Argentina

AMNH_100112
Laguna Guadalupe, Dpto. La Capital, Prov, Santa Fe, Argentina

CM_66.101
Laguna Guadalupe, Santa Fe, Argentina

FMNH_216472
Laguna Oca, Prov. Formosa, Argentina

FMNH_216471
Laguna, near Airport Oran, Prov. of Salta, Argentina

FMNH_44560
Northern Santa Fe Prov., Argentina

USNM_86605
Rio Corrientes, South America

CM_61.5828
Rio Limay ?, Patagonia, Argentina

INHS_85705
Rio Parana (Río de la Plata Dr.) side channel, 17.3 mi SSW Esquina, Corrientes, Argentina, South America, -30.24806, -59.60724

SMF_11945
Rio Paraná, bei Godoy, Corrientes, Argentinien

31 Specimens from Bolivia

UF_93273
15.8 km SSW of San Rafael, Velasco Province, Santa Cruz Departemento, Bolivia 60 30’ W, 16 56’ S

UF_93311
16 km S of San Rafael, Velasco Province, Santa Cruz Departemento, Bolivia

UF_93270
3.5 km N of San Ramon, Santa Cruz Departemento, Bolivia

USNM_361150
Beni River, Rurrenebague, Bolivia, drains into the Madeira which drains into the Amazon

ZMB_MP_0178
Bolivia

INHS_18223
borrow pit (Rio Amazon - Rio Apere Dr.), 3 km E Estacion Biologica del Beni on rd. to San Ignacio, Beni, Bolivia

UF_93274
Comunidad La Esperanza, circa 40 km N of San Jose, Velasco Province, Santa Cruz Departemento, Bolivia

FMNH_21482
Ibares, Bolivia

FMNH_45716
Puerto Suarez, Departmento de Santa Fe, Bolivia, Paraguay drainage

UF_93373
Rio Ibare, 17 km SSE San Lorenzo, Marbon Province, Beni Departemento, Bolivia

UF_93360
Rio Ibare, Puerto Almecen, Cercado Province, Beni Departemento, Bolivia

UF_93362
Rio Ibare, Puerto Almecen, Cercado Province, Beni Departemento, Bolivia

UF_93363
Rio Ibare, Puerto Almecen, Cercado Province, Beni Departemento, Bolivia

UF_93364
Rio Ibare, Puerto Almecen, Cercado Province, Beni Departemento, Bolivia

AMNH_186421
Rio Itenez (=Guaporé), Bani, 4 km above Costa Marques, Brazil, Bolivia

FMNH_45717
Rio Mamore, Trinidad, Departmento de Benin, Bolivia

INHS_17845
Rio Matos (Rio Amazon - Rio Apere Dr.), 6 km E Estación Biologica del Beni on rd. to San Ignacio, Beni, Bolivia

INHS_17844
Rio Matos (Rio Amazon - Rio Apere Dr.), 6 km E Estación Biologica del Beni on rd. to San Ignacio, Beni, Bolivia

UF_93346
Rio Matos, 25 km E, 12 km S San Borja, Yacuma Province, Beni Departemento, Bolivia

UF_93349
Rio Matos, 25 km E, 12 km S San Borja, Yacuma Province, Beni Departemento, Bolivia

INHS_18226
Rio Moseruna (Rio Amazon - Rio Apere Dr.), 46 km E Estacion Biologica del Beni, on rd. to San Ignacio, Beni, Bolivia

UF_93377
Rio Parapeti, Estancia, Isla Verde, Chiquitos Province, Santa Cruz Departmento, Bolivia

UF_93296
Rio Tucavaca, Candelaria, Chiquitos Province, Santa Cruz Departemento, Bolivia

UF_93308
Rio Tucavaca, Candelaria, Chiquitos Province, Santa Cruz Departemento, Bolivia

UF_93310
Rio Tucavaca, Candelaria, Chiquitos Province, Santa Cruz Departemento, Bolivia

UF_93316
Rio Uroguaito, 39 km E Concepcion, Nuflo de Chavez Province, Santa Cruz Departemento, Bolivia

UF_93336
Rio Zapacos, 3 km W Asencion, Nuflo de Chavez Province, Santa Cruz Departemento, Bolivia

MNHN_MP_0671
Santa Anna de Chiquitos, Brazil

UF_93326
Small Arroyo, Circa 10 km W of Warnes, Andres Ibanez Province, Santa Cruz Departemento, Bolivia

UMMZ_112644
Tapacany River, Tarbusia, Bolivia

UF_93346B. Rio Matos, 25 km E, 12 km S San Borja, Yacuma Province, Beni Departemento, Bolivia

80 Specimens from Brazil

SMF_11943
A.d. Amazonas Fl.

MCZ_MP.171
Amazon

USNM_127191
Amazon

CM_61.11131
Amazon

DMNH_81458
Amazon River

ANSP_125438
Amazon River

FMNH_21479
Amazon River

FMNH_21493
Amazon River

FMNH_115948
Amazon River

AMNH_30865
Amazon River

UF_93181
Amazon River, Brazil

UMMZ_112431
Amazon River, Brazil

UMMZ_112617
Amazon River, Brazil

UMMZ_112394
Amazon River, South America

SMF_11934
Amazonas

INHS_79223
at mouth of rio Jarauçu (Aquiqui)

ZMB_40678
Bakairi, Kamayura

INHS_78833
beach on right bank ca. 60 km north of Vitória do Xingu

INHS_79198
beach on right bank, campsite 5 and vicinity, ca. 3.5 km southeast of Porto do Moz

MNHN_MP_0670
Brasil

MCZ_MP.164
Brazil

ANSP_125439
Brazil

UMMZ_112392
Brazil

USNM_126492
Brazil

ANSP_41853
Brazil

UMMZ_112432
Brazil

UMMZ_112626
Brazil

SMF_168140
Fluss Amazon

CM_61.5827
headwaters of Rio Paraguay, Santa Rita, Matto Grosso, Brazil

CM_61.5831
headwaters of Rio Paraguay, Santa Rita, Matto Grosso, Brazil

FMNH_54628
Igarapé Aniba, Amazonas, Brazil

SMF_11935
Itaituba am Amazonas

MCZ_MP.165
Javary, Brazil

MCZ_91165
Juruá River, Juao Pessoa, Brazil

USNM_853432
Juruá River, Juao Pessoa, Brazil

USNM_706865
Juruá River, Juao Pessoa, Brazil

DMNH_56336
Juruá River, Juao Pessoa, Brazil

DMNH_146473
Juruá River, Juao Pessoa, Brazil

DMNH_118526
Juruá River, Juao Pessoa, Brazil

AMNH_139058
Juruá River, Juao Pessoa, Brazil

SBMNH_367477
Juruá River, Juao Pessoa, Brazil

SBMNH_367467
Juruá River, Juao Pessoa, Brazil

FMNH_30447
mouth of Rio Curucumba, into Lake Mamuru, near Obidos, Pará, Brazil

INHS_78894
off island opposite of mouth of igarapé Tucuruí, ca. 4 km northeast of Vitória do Xingu

INHS_78879
off right bank, point between campsite 5 and Porto do Moz

FMNH_126609
Rio Araguaia, Barra do Tapirape, Mato Grosso, Brazil; 10°50’S, 50°40’

ZMB_37269
Rio de Miranda, Mattogrosso

FMNH_54603
Rio Juruá, near João Pessoa, Amazonas, Brazil

FMNH_25885
Rio Juruá, near João Pessoa, Amazonas, Brazil

MCZ_297399
Rio Maica Faz, Taparinha, Santarem, Pará, Brazil

ANSP_158784
Rio Paraguay, Descalvados, Matto Grosso, Brazil

CM_MP_77
Rio Paraguay, Sao Luis de Caceres, Matto Grosso, Brazil

SMF_11947
Rio Paraguay, Staat Matto Grosso, Brasilien

UMMZ_4392
Rio Purús, Brazil

CM_MP_75
Rio Tapajós, Santarem, Pará, Brazil

FMNH_112110
Rio Tapirape, affl. of Rio Araguaia, Mato Grosso, Brazil

ZMB_35612
Rio Tocantins

INHS_45937
Rio Xingu, ~7 km N Senador José Porfîrio, Pará, Brazil

SBMNH_367481
S. Joai, Matto Grosso

UMMZ_112397
Southern Brazil

UMMZ_112438
trib. to Amazon River, 100 mi from Parà, Brazil

UF_270563
tributary of The Amazon River

FMNH_43783
Xingu Alto, Jacare, Mato Grosso, Brazil

PUCRS-MCP_6119. Brazil: Acre: Marechal Taumaturgo: (Amazon - Juruá): rio Tejo: -8.94684 -72.59079

INPA_1577. Brazil: Amapá: (Amazon): rio Amazonas: prox. Forte Macapá 00° 1' 47" N, 51° 2' 53'' W: 0.02972, -51.04806

PUCRS-MCP_8538. Brazil: Amazonas: Humaitá: (Amazon - Madeira): rio Madeira: -7.51509 -63.01646

INPA_909. Brazil: Amazonas: Iranduba: (Amazon - Negro): rio Negro: Catalão, entre o flutuante do INPA e a margem do rio Negro: -3.14898 -59.91798

INPA_1451. Brazil: Amazonas: Iranduba: (Amazon - Negro): rio Negro: Catalão, local 1, caminho entre flutuante do INPA e margem direita do rio Negro: -3.14898 -59.91798

INPA_1124. Brazil: Amazonas: Iranduba: (Amazon - Negro): rio Negro: Catalão, margem direita do paraná que liga o lago Catalão até o rio Negro: -3.14833 -59.91833

INPA_1325. Brazil: Amazonas: Iranduba: (Amazon - Negro): rio Negro: Catalão, praia na boca do paraná do lago Catalão: -3.14833 -59.91833

PUCRS-MCP_9081. Brazil: Goias: São Miguel do Araguaia: (Tocantins - Araguaia)

INPA_491. Brazil: Mato Grosso do Sul: Aquidauana: (Río de la Plata - Paraná - Miranda): rio Negro: na fazenda São Pedro

MHNCI_2525. Brazil: Mato Grosso do Sul: Corumbá: (Río de la Plata - Paraná - Paraguay)

PUCRS-MCP_6151. Brazil: Pará: (Amazon - Tapajós): rio Tapajós: Praia do Rio Tapajós

PUCRS-MCP_8537. Brazil: Pará: Afuá: (Amazon): Ilha do Chagas, afluente da Ilha do Pará: -1.99813 -54.93062

INPA_1521. Brazil: Para: Rio Xingu, ilha do Kaituka

PUCRS-MCP_8528. Brazil: Pará: Santarém: (Tocantins): Ponta das Pedras: -1.26962 -48.79856

INPA_630. Brazil: Pará: Terra Santa: (Amazon lake): Lago Piraruacá: -2.03830 -56.30357

INPA_848. Brazil: Pará: Terra Santa: (Amazon lake): Lago Piraruacá: -2.03830 -56.30357

INPA_1360. Brazil: Tocantins: Caseara: (Tocantins - Araguaia): rio Araguaia: -9.23073 -49.96436

4 Specimens from Colombia

UMMZ_112434
Colombia, South America

ZMB_35610
Mocoa

MCZ_134967
Rio Putumayo, Pto. Asis, Colombia

INPA_1406. Colombia: Vichada:(Orinoco - Guaviare): rio Guaviare: Laguna Paluame, margem esquerda rio Guaviare, próximo confluência Guaviare-Inírida: 4.05008 -67.75001

13 Specimens from Ecuador

ZMB_MP_0179
Ecuador