species Prisodon syrmatophorus (Gmelin, 1791): specimens

6 available nominal species synonyms (14 total synonyms)

Recent Taxonomic Opinions

Prisodon (Paxyodon) syrmatophorus — Graf & Cummings (2007)
Paxyodon syrmatophorus — Lasso et al. (2009), Bogan (2010), Santos-Neto et al. (2016), Santos-Neto et al. (2018), Mansur et al. (2020), Prié et al. (2026)
Prisodon syrmatophorus — IUCN (2014), Graf & Cummings (2021), Campbell & Lydeard (2026)
Paxyodon syrmathophorus [sic] — Pereira et al. (2014)
Prisodon alatus — Soliman et al. (2016)

Range

Northeastern South America, from the Orinoco and Guyana to the lower Amazon. (South America: SA2 SA3)

Map of Georeferenced Specimens

specimens map of Prisodon syrmatophorus

MUSSELp Specimen Records

Type Specimens

MNHN_MP_1542
Bresil
presumed syntype
Hyria complanata Hupé, 1857

USNM_83883
Amazon R., S. Am.
type
Unio brownianus Lea, 1838

USNM_83883A
Amazon R., S. Am.
paratype
Unio brownianus Lea, 1838

Other Specimens by Collection | show by country

15 Specimens from AMNH

AMNH_120676
Rio Itenez (=Guaporé), Beni, 4 km above Costa Marques, Brazil, Bolivia

AMNH_31294
Amazon River

AMNH_30844
Amazon River

AMNH_31270
Amazon River

AMNH_30842
Amazon River

AMNH_50937
Brazil

AMNH_88274
Brazil

AMNH_61962
Brazil

AMNH_146455
Rio Sao Francisco, Bahia, Brazil

AMNH_31272
Rio Solimoes, Brazil

AMNH_146547
Rio Tocantins, Bahai [Bahia ?] Brazil

AMNH_146456
Rio Tocantins, Brazil

AMNH_31271
Guiana

AMNH_31273
[no locality available - South America]

AMNH_31274
South America

3 Specimens from AMS

AMS_126889
Amazon River

AMS_126890
Brazil

AMS_1732
British Guiana

11 Specimens from ANSP

ANSP_125545
Amazon River

ANSP_133819
bought in the market at Pará, Brazil

ANSP_41788
Brazil

ANSP_41871
Brazil

ANSP_219176
Brazilian Consulate, Chicago, 1943

ANSP_281311
Rio Curua, near Santarem, on Amazon, below Manaus, Brazil

ANSP_167895
Rio Tapajós, Santarem, Pará, Brazil

ANSP_194573
Rio Tocantins, Trocara, Pará, Brazil

ANSP_41870
Santarem, Amazon River

ANSP_45723
[no locality available - South America]

ANSP_125546
Orinoco River

10 Specimens from BMNH

BMNH_MP_129
Amazon ?

BMNH_MP_127
Amazon River

BMNH_MP_126
Brazil

BMNH_MP_128
Brazil

BMNH_MP_435
Brazil

BMNH_MP_044
Rio Tapajós, Santarem, Pará, Brazil

BMNH_MP_171
Semuni Creek, [Simoni River], Rupununi River Dr., Station 665, British Guiana

BMNH_1851-11-3-373
[no locality available - South America]

BMNH_MP_130
[no locality available - South America]

BMNH_MP_150
[no locality available - South America]

4 Specimens from CM

CM_61.9272
Amazon River

CM_61.5109
Rio Tapajós, Santarem, Prov. Pará, Brazil

CM_61.2494
River Amazon

CM_61.1525
?, South America

6 Specimens from DMNH

DMNH_186554
Amazon River, Brazil

DMNH_173097
Amazon River, Brazil

DMNH_173125
Brazil

DMNH_173090
Brazil

DMNH_173096
Rio Jamauchim, Brazil

DMNH_149926
lower Amazon River, Brazil

28 Specimens from FMNH

FMNH_2590
Amazon River

FMNH_19417
Brazil

FMNH_29162
Lago de Tambaqui, Barra de Sao Manoel, Pará, Brazil

FMNH_49174
Lago de Xixia (Chichia), Municipio de Parintins, Amazonas, Brazil

FMNH_30428
Lago do Trocoa, near Lago Salgado, near Obidos, Pará, Brazil

FMNH_30430
Lago do Trocoa, near Lago Salgado, near Obidos, Pará, Brazil

FMNH_30457
Lago do Trocoa, near Lago Salgado, near Obidos, Pará, Brazil

FMNH_30426
lower Rio Tapajós, Lago Timbo, Pará, Brazil

FMNH_126608
Rio Araguaia, Barra do Tapirape, Mato Grosso, Brazil; 10°50’S, 50°40’

FMNH_49175
Rio Arapiuns, below Ponta Icuxi, Pará, Brazil

FMNH_30429
Rio Cumina, near Obidos, Pará, Brazil

FMNH_29161
Rio Sao Manoel, Barra de Sao Manoel, Pará, Brazil

FMNH_30427
Rio Tapajós, Belterra, Pará, Brazil

FMNH_29166
Rio Tapajós, Belterra, Pará, Brazil

FMNH_30431
Rio Tapajós, Pindobal, Pará, Brazil

FMNH_29168
Rio Tapajós, Pindobal, Pará, Brazil

FMNH_30459
Rio Tapajós, Pindobal, Pará, Brazil

FMNH_29167
Rio Tapajós, Santarem, Corôa de Areia, Pará, Brazil

FMNH_30458
Rio Tapajós, Santarem, off Mapiri Bay, Pará, Brazil

FMNH_29163
Rio Tapajós, Santarem, off Mapiri Bay, Pará, Brazil

FMNH_29165
Rio Tapajós, Santarem, Pará, Brazil

FMNH_115946
Rio Tapajós, Santarem, Pará, Brazil

FMNH_29164
Rio Tapajós, Santarem, Pará, Brazil

FMNH_216437
Rio Tocantins, Baiao, Brazil

FMNH_21815
Rio Tocantins, Brazil

FMNH_43782
Xingu Alto, Jacare, Mato Grosso, Brazil

FMNH_142704
South America

FMNH_112109B. Rio Tapirape, trib. to Rio Araguaia, Mato Grosso, Brazil

15 Specimens from INHS

INHS_79221
at mouth of rio Jarauçu (Aquiqui)

INHS_78831
beach on right bank ca. 60 km north of Vitória do Xingu

INHS_79197
beach on right bank, campsite 5 and vicinity, ca. 3.5 km southeast of Porto do Moz

INHS_79210
left bank ca. 5 km upstream from confluence with rio Xingu

INHS_79231
main channel off right bank campsite 5, ca. 3.5-4 km south-southeast of Porto do Moz

INHS_79214
mouth bay and confluence with rio Xingu

INHS_78886
off right bank ca. 17 km north-northwest (downstream) of Senador José Porfírio

INHS_78863
off right bank ca. 55 km south-southeast of Porto do Moz

INHS_78840
off right bank ca. 6 km north-northwest of Vitória do Xingu

INHS_78877
off right bank, point between campsite 5 and Porto do Moz

INHS_85708
Rio Tapajós, 2.8 km downriver of Villa Simoes, 2.8 km upriver of Vila Goreth, 5.6 km upriver of rio Arapiuns, Pará, Brazil

INHS_83152
Rio Tapajós, 2.8 km downriver of Villa Simoes, 2.8 km upriver of Vila Goreth, 5.6 km upriver of rio Arapiuns, Pará, Brazil

INHS_81417
Rio Tapajós, 6.5 km downstream Vila Goreth, 14.8 km Alter do Chao, Para, Brazil

INHS_45931
Rio Xingu, ~7 km N Senador José Porfîrio, Pará, Brazil

INHS_78845
shore along left bank at confluence with rio Xingu

36 Specimens from INPA

INPA_1571. Brazil: Amapá: (Amazon): rio Amazonas: prox. Forte Macapá 00° 1' 35" N, 51° 03' 05" W: 0.02638 -51.05140

INPA_1572. Brazil: Amapá: (Amazon): rio Amazonas: prox. Forte Macapá 00° 1' 47" N, 51° 2' 53'' W: 0.02972, -51.04806

INPA_943. Brazil: Pará: (Amazon - Trombetas): rio Trombetas: à jusante do porto Trombetas: -1.45950 -56.38131

INPA_872. Brazil: Pará: (Amazon - Trombetas): rio Trombetas: à montante do porto Trombetas: -1.45950 -56.38131

INPA_1408. Brazil: Pará: Barcarena: (Tocantins): rio Pará: baiá de Marajó: -1.50583 -48.6258

INPA_981. Brazil: Pará: Cametá: (Tocantins): rio Tocantins

INPA_1579. Brazil: Pará: Cametá: (Tocantins): rio Tocantins: vila do Carmo

INPA_219. Brazil: Pará: Itupiranga: (Tocantins): rio Tocantins

INPA_1347. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, enseada em frente à praia do lago Preto, jusante da Ponta de Pedras: -2.50454 -54.96061

INPA_1355. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, enseada em frente à praia em frente ao lago mais próximo da comunidade: -2.50454 -54.96061

INPA_1333. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, enseada em frente a um lago: -2.50454 -54.96061

INPA_1352. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, enseada próxima a um pontal: -2.50454 -54.96061

INPA_1353. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, margem da Ponta do Cururu até as barracas próximas da praça de Alter: -2.50454 -54.96061

INPA_496. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, margem próxima ao Tapajós: -2.50454 -54.96061

INPA_1162. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia à frente e esquerda do lago Jacundá, ponto 5: -2.50454 -54.96061

INPA_1330. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia a montante da comunidade: -2.50454 -54.96061

INPA_1351. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia da Ponta do Cururu: -2.50454 -54.96061

INPA_1169. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente à praça caminhando aprox. 1,5Km em direção à praia Ponta do Cururu, ponto 1: -2.50454 -54.96061

INPA_1177. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente a um igarapé próximo à Ponta de Pedra: -2.50454 -54.96061

INPA_1181. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente a um lago, ponto 4: -2.50454 -54.96061

INPA_1188. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente a um lago, ponto 8: -2.50454 -54.96061

INPA_1160. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente ao lago do Jacaré, ponto 2: -2.50454 -54.96061

INPA_1163. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente ao lago Itapari, ponto 10: -2.50454 -54.96061

INPA_1186. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente ao lago Muretá, ponto 7: -2.50454 -54.96061

INPA_1149. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia em frente ao lago Piranha: -2.50454 -54.96061

INPA_1339. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia entre lago próx. da comunidade e pontal: -2.50454 -54.96061

INPA_1341. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia entre lago próx. da comunidade e pontal: -2.50454 -54.96061

INPA_1158. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia Ponta do Cururu até barracas próximas à praça (aprox. 2 Km de caminhada), ponto 10: -2.50454 -54.96061

INPA_1182. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia próxima ao lago Jacundá, ponto 4: -2.50454 -54.96061

INPA_1187. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, praia próxima ao lago Muretá, ponto 9: -2.50454 -54.96061

INPA_225. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão: -2.50454 -54.96061

INPA_493. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão: -2.50454 -54.96061

INPA_974. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão: -2.50454 -54.96061

INPA_988. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão: -2.50454 -54.96061

INPA_1432. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão: -2.50454 -54.96061

INPA_1358. Brazil: Tocantins: Caseara: (Tocantins - Araguaia): rio Araguaia: -9.23073 -49.96436

2 Specimens from IRSNB

IRSNB_MP_0944
Cayenne

IRSNB_MP_0937
British Guiana

12 Specimens from MCZ

MCZ_MP.91
Amazon River, Brazil

MCZ_30644
Amazon River, Brazil

MCZ_MP.93
Amazon River, South America

MCZ_78431
bought in the market at Pará, Brazil

MCZ_6622
Brazil

MCZ_6623
Brazil

MCZ_297393
Rio Maica Faz, Taparinha, Santarem, Pará, Brazil

MCZ_MP.94
Rio Tapajós, Aramanahi, just above Belterra, Pará, Brazil

MCZ_47052
Rio Tapajós, Santarem, Pará, Brazil

MCZ_89497
Rio Tapajós, Santarem, Pará, Brazil

MCZ_186365
Rio Tocantins, Cameta, Est. Pará, Brazil

MCZ_MP.92
[no locality available - South America]

9 Specimens from MNHN

MNHN_MP_0647
Brasil

MNHN_MP_0644
Brazil

MNHN_MP_0789
Rio Tapajós, Santarem, Pará, Brazil

MNHN_MP_0799
British Guyana

MNHN_MP_0788
Guyane

MNHN_MP_0648
Perou

MNHN_MP_0781
[no locality available - South America]

MNHN_MP_0800
Uruguay [no]

MNHN_MP_0656
Orenoque

8 Specimens from PUCRS-MCP

PUCRS-MCP_6150. Brazil: Pará: (Amazon - Tapajós): rio Tapajós: Praia do Rio Tapajós

PUCRS-MCP_8531. Brazil: Pará: Afuá: (Amazon): Ilha do Chagas, afluente da Ilha do Pará: -1.99813 -54.93062

PUCRS-MCP_8351. Brazil: Pará: Ilha Grande: (Tocantins): Rio Tocantins: Vila do Carmo: -2.45094 -49.44318

PUCRS-MCP_8357. Brazil: Pará: Ilha Grande: (Tocantins): Rio Tocantins: Vila do Carmo: -2.45094 -49.44318

PUCRS-MCP_8527. Brazil: Pará: Ilha Grande: (Tocantins): Rio Tocantins: Vila do Carmo: -2.45094 -49.44318

PUCRS-MCP_8355. Brazil: Pará: Santana do Araguaia: (Tocantins - Araguaia): Lagoa da Mata: Rio Araguaia

PUCRS-MCP_8515. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, margem direita do rio Rio Tapajós: -2.50454 -54.96061

PUCRS-MCP_8516. Brazil: Pará: Santarém: (Amazon - Tapajós): rio Tapajós: Alter do Chão, margem direita do rio Rio Tapajós: -2.50454 -54.96061

11 Specimens from SMF

SMF_11757
Brasilien

SMF_11758
Brasilien

SMF_182137
Brasilien

SMF_11756
Rio Araguaya bei Goyaz, Brasilien

SMF_11755
Rio Araguaya, bei Goyaz, Ilha do Bananal, Bras.

SMF_11761
Rio Tapajós, Santarem, Pará, Brazil

SMF_36729
Rio Tocantins, Amazonas, Geb., b. Cameta, Staat Pará, Bras.

SMF_283463
Rio Tocantins, Baiao

SMF_11760
Guyana

SMF_11759
[no locality available - South America]

SMF_319657
Pemones Indian Reserve Territory (Orinoco Dr.) Venezuela

1 Specimens from UF

UF_93178
Brazil

11 Specimens from UMMZ

UMMZ_184032
Amazon River

UMMZ_110935
Amazon River, Brazil

UMMZ_110931
Amazon River, South America

UMMZ_110933
Brazil

UMMZ_4388
Largo Grande, Brazil

UMMZ_110932
Rio Jamachim, Brazil

UMMZ_62226
Rio Tapajós, Santarem, Pará, Brazil

UMMZ_110937
Rio Tapajós, Santarem, Pará, Brazil

UMMZ_110940
Rio Tapajós, Santarem, Pará, Brazil

UMMZ_110936
Rio Tocantins, Brazil

UMMZ_65581
Rio Tocantins, Cameta, Pará, Brazil

9 Specimens from USNM

USNM_83881
Amazon

USNM_83882
Amazon

USNM_36095
Amazon

USNM_120133
Amazon R.

USNM_853888
Amazon, Para City, Brazil

USNM_653460
Brazilian Consulate, Chicago, 1943

USNM_83880
Pará City, Brazil

USNM_339717
British Guiana

USNM_853812
[no locality available - South America]

7 Specimens from ZMB

ZMB_40674-01
Bakairi, Kamayura

ZMB_36001
Rio Tocantins

ZMB_MP_0222
Guiana

ZMB_MP_0227
Guyana

ZMB_MP_0226
[no locality available - South America]

ZMB_7479
[no locality available - South America]

ZMB_7480
[no locality available - South America]

6 Specimens from other collections

UCM_36453
Lake Fundacion, 20 km E Soledad, on floodplain of the Orinoco River, Anzoategui, Venezuela

UCM_36458
Lake Tineo, 15 km E Soledad, on floodplain of the Orinoco River, Anzoategui, Venezuela

UCM_36454
Lake Tineo, 15 km E Soledad, on floodplain of the Orinoco River, Anzoategui, Venezuela

COMA_B.1054.

RMNH_327159. Brasile

RMNH_327157. Para, Brasile

GenBank Vouchers

Georeferenced GenBank Vouchers

Brazil

Mp_3739_Psyr_3. (16S: KU888216, COI: KU888256, ITS1, 18S: KU888186, go to GenBank) Amazon River (51°08’43.81” W; 0°08’05.52” S).

Mp_3739_Psyr_5. (16S: KU888218, COI: KU888258, ITS1, 18S: KU888187, go to GenBank) Amazon River (51°08’43.81” W; 0°08’5.52” S).

Mp_3739_Psyr_6. (COI: KU888259, go to GenBank) Pará River (48°46’34.8600 W; 1°31’40.4500 S).

Mp_3739_Psyr_1. (COI: KU888254, ITS1, 18S: KU888185, go to GenBank) Tocantins River (49°25’06.17” W; 2°30’01.28” S).

Mp_3739_Psyr_2. (16S: KU888215, COI: KU888255, go to GenBank) ditto.

Mp_3739_Psyr_4. (16S: KU888217, COI: KU888257, go to GenBank) ditto.

Mp_3739_Psyr_7. (16S: KU888219, COI: KU888260, ITS1, 18S: KU888188, go to GenBank) ditto.

Mp_3739_Psyr_8. (COI: KU888261, go to GenBank) ditto.

Mp_3739_Psyr_9. (16S: KU888220, COI: KU888262, ITS1, 18S: KU888189, go to GenBank) ditto.

MUSSELpdb

Taxonomy

Geography