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Acanthochelys radiolata (MIKAN, 1820)

IUCN Red List - Acanthochelys radiolata - Least Concern, LR

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Higher TaxaChelidae, Chelinae, Pleurodira, Testudines (turtles)
Subspecies 
Common NamesE: Brazilian Radiolated Swamp Turtle
G: STrahlen-Plattschildkröte
Portuguese: Cágado, Cágado-Amarelo, Cágado-Pescoço-de-Cobra. 
SynonymEmys radiolata MIKAN 1820: plate 20
Emys radiolata — WIED 1824
Platemys Gaudichaudii DUMÉRIL & BIBRON 1835: 427
Platemys Radiolata — DUMÉRIL & BIBRON 1835: 412
Hydraspis radiolata — BOULENGER 1889
Platemys werneri SCHNEE 1900: 463
Platemys radiolata — SIEBENROCK 1902
Platemys radiolata — SIEBENROCK 1904
Platemys radiolata quadrisquamosa LUEDERWALDT 1926
Platemys radiolata — ERNST 1983
Acanthochelys radiolata — IVERSON 1986
Platemys radiolata — ALDERTON 1988
Platemys radiolata — ERNST & BARBOUR 1989: 63
Acanthochelys radiolata — CASTRO & TEIXEIRA 2007
Acanthochelys radiolata — GARBIN et al. 2016
Acanthochelys radiolata — TTWG 2021 
DistributionBrazil (Bahia, Minas Gerais, Mato Grosso, Sao Paulo, Espírito Santo, Sergipe)

Type locality: "Sebastianopoli" (=Rio de Janeiro, Rio de Janeiro, Brazil).  
Reproductionoviparous. 
TypesHolotype: NMW 23390. 
DiagnosisAdditional details, e.g. a detailed description or comparisons (2241 characters), are available for collaborators and contributors. Please contact us for details. 
CommentA. radiolata represents one single polymorphic species with two color patterns for the carapace and three for the plastron.

Habitat: freshwater (rivers, swamps) 
EtymologyNamed after Latin radiolatum, provided with rays. (Mikan 1820, Esteban Lavilla, pers. comm., April 2024) 
References
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  • Duméril, A.M.C., and G. Bibron. 1835. Erpétologie Générale ou Histoire Naturelle Complète des Reptiles, Vol. 2. Librairie Encyclopédique de Roret, Paris, iv + 680 p. - get paper here
  • Ernst, C H 1983. Platemys radiolata (Mikan). Radiated sideneck turtle. Catalogue of American Amphibians and Reptiles ( 339: 1-2 - get paper here
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  • Zocca, C Z; Nóbrega, Y C; Acosta, I C L; Martins, T F & Ferreira, R B; 2019. Acanthochelys radiolata (Brazilian Radiolated Swamp Turtle) Ectoparasites. Herpetological Review 50 (3): 552-553 - get paper here
 
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