Bivalvia | Unionida | Hyrioidea | Hyriidae | Hyriinae | Rhipidodontini | Guyanhyrida

species Guyanhyrida demeraraensis (Lea, 1859): specimens

1 available nominal species synonym (6 total synonyms)

Recent Taxonomic Opinions

Diplodon demeraraensis — Graf et al. (2015), Santos-Neto et al. (2016), Bolotov et al. (2016), Wu et al. (2021)
“Diplodon suavidicus” ** — Bolotov et al. (2017), Bolotov et al. (2017), Konopleva et al. (2017), Huang et al. (2019)
Diplodon suavidicus — Huang et al. (2019), Bieler (2021), Campbell & Lydeard (2026)
Guyanhyrida demeraraensis — Prié et al. (2026)

Range

Endemic to the Guiana Shield, South America. (South America: SA2)

Map of Georeferenced Specimens

specimens map of Guyanhyrida demeraraensis

MUSSELp Specimen Records

Type Specimens

image of lot USNM_521998
USNM_521998
above Munduapo, Venezuela
holotype
Diplodon flucki Morrison, 1943

image of lot MCZ_167994
MCZ_167994
Orinoco River, above Munduapo, Venezuela
paratypes
Diplodon flucki Morrison, 1943

image of lot ANSP_178114
ANSP_178114
Orinoco River, Maipures, Colombia
topotype
Diplodon flucki Morrison, 1943

image of lot BMNH_1964141
BMNH_1964141
Demerara
holotype
Unio demeraraensis Lea, 1859

USNM_521999. above Munduapo, Venezuela — holotype Diplodon flucki Morrison, 1943

Other Specimens by Country | show by collection

6 Specimens from Brazil

image of lot ZMB_MP_0342
ZMB_MP_0342
Rio Branco

INPA_1501. Brazil: Roraima: (Amazon - Negro - Branco - Uraricoera): rio Uraricoera: cach. Curecurema

INPA_191. Brazil: Roraima: Alto Alegre: (Amazon - Negro - Branco - Uraricoera): rio Uraricoera: ilha de Maracá, fazenda Boa Esperança: 3.36516 -61.38308

INPA_190. Brazil: Roraima: Boa Vista: (Amazon - Negro - Branco): rio Branco: 2.81611 -60.66455

INPA_193. Brazil: Roraima: Boa Vista: (Amazon - Negro - Branco): rio Branco: 2.81611 -60.66455

INPA_891. Brazil: Roraima: Caracaraí: (Amazon - Negro - Branco): rio Branco: 1.73994 -61.14151

2 Specimens from Colombia

image of lot MCZ_146659
MCZ_146659
Rio Orinoco, Maipures, Colombia

image of lot MCZ_167987
MCZ_167987
Rio Orinoco, Maipures, Colombia

3 Specimens from Guyana

image of lot ZMB_9375
ZMB_9375
Rupununi

image of lot INHS_27893
INHS_27893
Takutu River, ca. 2.75 km W Saint Ignatius, Rupununi, Guyana

BMNH_MP_004B. British Guiana

4 Specimens from Venezuela

image of lot INHS_31687
INHS_31687
Rio Manapiare (Orinoco River Dr.) 14 km NW San Juan de Manapiare, at mouth of the Cano Yutaje, Amazonas, Venezuela.

image of lot INHS_16991
INHS_16991
Rio Orinoco, Puerto la Esmeralda, Departamento Atabapo, Territorio Federal Amazonas, Venezuela

image of lot INHS_16986
INHS_16986
Rio Siapa, Raudal Timoshoteri, FUDECI, Exp. Tapirapecó, Departamento Rio Negro, Territorio Federal Amazonas, Venezuela

image of lot INHS_46953
INHS_46953
Rio Ventuari, base of Cerro Moriche, 1 km upstream Moriche community, 167 km ENE San Fernando de Atabapo, Manapiare, Amazonas, Venezuela

GenBank Vouchers

Georeferenced GenBank Vouchers

Guyana

INHS_27889_1. (16S: KP184849, 28S: KP184874, COI: KP184898, go to GenBank) Pirara River, trib. Ireng River, 3.5 km NNW Pirara Ranch, N of Lethem, Rupununi, Guyana.

INHS_27889_2. (16S: KP184850, 28S: KP184875, COI: KP184899, go to GenBank) ditto.