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 Collection | show by country

11 Specimens from AMNH

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

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

AMNH_30865
Amazon River

AMNH_139058
Juruá River, Juao Pessoa, Brazil

AMNH_88043
Villarrica, Paraguay

AMNH_89111_2
along water line at Tierra Blanca, Peru

AMNH_89109
along water line at Tierra Blanca, Peru

AMNH_146580
Huazabamba, East Peru

AMNH_89223
Lake Yarina-Cocha, Pucallpa, Peru

AMNH_89123
Rio Ucayali, Peru

AMNH_30864
Upper Amazon River

1 Specimens from AMS

AMS_126854
Guadalupe Lagoon, Parana River, Santa Fe, Argentina

12 Specimens from ANSP

ANSP_125438
Amazon River

ANSP_125439
Brazil

ANSP_41853
Brazil

ANSP_158784
Rio Paraguay, Descalvados, Matto Grosso, Brazil

ANSP_125432
Napo River, Ecuador

ANSP_232407
Huazabamba, East Peru

ANSP_125431
Maranon River, Amazon R.

ANSP_125440
Peru

ANSP_125434
[no locality available - South America]

ANSP_85115
[no locality available - South America]

ANSP_41858
So. America

ANSP_125448
South America

2 Specimens from BMNH

BMNH_1934-7-3-22-23
Villarica, Paraguay

BMNH_MP_292
India ? [no - South America]

13 Specimens from CM

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

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

CM_66.101
Laguna Guadalupe, Santa Fe, Argentina

CM_61.5828
Rio Limay ?, Patagonia, Argentina

CM_61.11131
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

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

CM_MP_75
Rio Tapajós, Santarem, Pará, Brazil

CM_61.5826
swamp of Lambare, Asuncion, Paraguay

CM_61.59
Peru

CM_MP_78
Peru

CM_1279
[no locality available - South America]

8 Specimens from DMNH

DMNH_81458
Amazon River

DMNH_56336
Juruá River, Juao Pessoa, Brazil

DMNH_146473
Juruá River, Juao Pessoa, Brazil

DMNH_118526
Juruá River, Juao Pessoa, Brazil

DMNH_173915
Ecuador

DMNH_173141
Rio Paraná, Paraguay

DMNH_195828
Rio Calleria, Colonia Calleria, 15 km from Ucayali, Loreto, Peru

DMNH_78643
Upper Amazon River

27 Specimens from FMNH

FMNH_216436
La Matanza, Prov. Salta, 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

FMNH_21482
Ibares, Bolivia

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

FMNH_45717
Rio Mamore, Trinidad, Departmento de Benin, Bolivia

FMNH_21479
Amazon River

FMNH_21493
Amazon River

FMNH_115948
Amazon River

FMNH_54628
Igarapé Aniba, Amazonas, Brazil

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

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

FMNH_54603
Rio Juruá, near João Pessoa, Amazonas, Brazil

FMNH_25885
Rio Juruá, near João Pessoa, Amazonas, Brazil

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

FMNH_43783
Xingu Alto, Jacare, Mato Grosso, Brazil

FMNH_21480
Rio Napo, Ecuador

FMNH_21478
Arroyo Mbobo, Villarrica, Paraguay

FMNH_120662
Rio Paraguay, Paraguay

FMNH_50769
Rio Pilcomayo, 3 mi N Linares, Paraguayan Chaco

FMNH_120331
Huacabamba, Peru

FMNH_21481
Huayabama, Peru

FMNH_47103
Laguna Yarinacocha, Pucallpa, Peru

FMNH_216446
Laguna Yarinacocha, Pucallpa, Peru

FMNH_114172
Rio Calleria, Colonia Calleria, 15 km from Ucayali, Loreto, Peru

FMNH_216668
Rio Samiria, N. trib of the Amazon River, between Rio Huallaga and Ucayali, Peru

33 Specimens from INHS

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

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

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

INHS_79223
at mouth of rio Jarauçu (Aquiqui)

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

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

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

INHS_23406
Rio Marañon, 1 mi S Nauta, in large shallow oxbow lake S of southern braid of main channel, Loreto, Peru

INHS_14962
Caño Cumarepo, ca. 4 km N Guanarito on rd. from Guanare to Guanarito, Portuguesa, Venezuela

INHS_14960
Caño Cumarepo, ca. 4 km N Guanarito on rd. from Guanare to Guanarito, Portuguesa, Venezuela

INHS_14869
Caño el Sardinero, 14 km SE Guanare, Portuguesa, Venezuela

INHS_14951
Caño el Sardinero, 14 km SE Guanare, Portuguesa, Venezuela

INHS_14925
Caño Guaritico, 58 km SSW Bruzual, Apure, Venezuela

INHS_17014
Caño Hermosa, just W La Pedrera, Tachira, Venezuela

INHS_14907
Caño Hondo, Agua Negra, Barinas, Venezuela

INHS_14929
Caño Igües, La Capilla, Portuguesa, Venezuela

INHS_15940
Caño Igües, Puerto Papelón, Portuguesa, Venezuela

INHS_84696
Cano Mamon (Rio Orinoco - Apure Dr.) El Mamon, 24 km E Guanare, Portuguesa, Venezuela, 9.07106, -69.52521

INHS_14901
Cano Maraca, 60 km S Guanare, on rd to Guanarito, Portuguesa, Venezuela

INHS_14938
Cano Maraca, 60 km S Guanare, on rd to Guanarito, Portuguesa, Venezuela

INHS_17024
Cano Maraca, 60 km S Guanare, on rd to Guanarito, Portuguesa, Venezuela

INHS_17019
Caño Maraca, SW Agua Clara, Portuguesa, Venezuela

INHS_14808
Caño Masparito, 1 km NW Libertad, Barinas, Venezuela

INHS_16998
caño, 10 km NW Libertad, on rd. from Libertad to Barinas, Barinas, Venezuela

INHS_16996
caño, 10 km NW Libertad, on rd. from Libertad to Barinas, Barinas, Venezuela

INHS_17004
caño, between Ciudad de Nutrias & Puerto de Nutrias, Barinas, Venezuela

INHS_17040
Laguna Macupina, Santa Maria, Apure, Venezuela

INHS_14889
Rio Camoruco, between Estero & Campo Alegre, about 10 km NW Libertad, Cojedes, Venezuela

INHS_17041
Rio Orinoco, Soledad at inundated lagoon, Anzoategui, Venezuela

11 Specimens from INPA

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

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

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

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

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

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

3 Specimens from IRSNB

IRSNB_MP_0917
Equatuer