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Higher TaxaEmydidae, Deirochelyinae, Testudinoidea, Testudines (turtles) 
Common NamesAtrato slider 
SynonymTrachemys medemi VARGAS-RAMÍREZ, VALLE, CEBALLOS & FRITZ 2017 
DistributionColombia (Chocó)

Type locality: Ro Sucio, Chocó, Parque Nacional Natural Los Katíos, Colombia  
TypesHolotype: IAvH-R-1606 (Instituto de Investigación de Recursos Biologicos Alexander von Humboldt, Colección de Reptiles, Villa de Leyva), leg. Jose V. Rodríguez, H. Pavas, 20 January 1977 
Etymology“We dedicate this new species with deep respect to Federico Medem (1912–1984), born as Count Friedrich Johann von Medem in Remte (then Remten), Latvia, from an old German-Baltic noble family. After his immigration to Colombia (1950), Medem contributed significantly to the development of herpetology of that country, in particular to the knowledge of turtles and crocodiles. Among others, he highlighted the distinctiveness of the Atrato slider (Medem, 1958, 1962, 1975) and provided in 1962 a most detailed morphological description that is repeated in large parts here. Among others, he highlighted that the broad brick-red postorbital stripes of the Atrato slider are a distinctive character in which it differs from its Central American relatives. 
  • Vargas-Ramírez M, del Valle C, Ceballos CP, Fritz U. 2017. Trachemys medemi n. sp. from northwestern Colombia turns the biogeography of South American slider turtles upside down. J Zool Syst Evol Res. 2017;55:326–339 - get paper here
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