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Tretioscincus agilis (RUTHVEN, 1916)

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Higher TaxaGymnophthalmidae (Gymnophthalminae), Gymnophthalmini, Sauria, Gymnophthalmoidea, Squamata (lizards)
Subspecies 
Common NamesE: Smooth Tegu
Portuguese: Calango, Calango-do-Rabo-Azul, Lagartinho-de-Rabo-Azul, Lagartixa 
SynonymCalliscincopus agilis RUTHVEN 1916: 2
Tretioscincus romani ANDERSSON 1918: 5
Tretioscincus brasiliensis MÜLLER 1923: 55
Calliscincopus romani — AMARAL 1937a: 1739
Calliscincopus agilis — DONOSO-BARROS 1968
Tretioscincus agilis — VANZOLINI & REBOUCAS-SPIEKER 1969: 124 (part)
Tretioscincus agilis — PETERS et al. 1970: 262
Tretioscincus agilis— DO NASCIMENTO et al. 1987
Tretioscincus agilis — CASTOE et al. 2004 
DistributionGuyana, Suriname, French Guiana, Brazil (Amazonas, Para), Venezuela
Colombia [Castro,F. (pers. comm.)]

Type locality: Sand ridges on Demerara River near Dunoon, Guyana.  
Reproductionoviparous 
TypesHolotype: UMMZ 47798
Holotype: NRM [Tretioscincus romani] 
DiagnosisDiagnosis: Tretioscincus with prefrontals widely separated, loreal hexagonal, narrowest ventrally, gulars i n five longitudinal rows. Dorsals 25-28 i n a middorsal row, ventrals 15-19 in a midventral row. All dorsals smooth. Scales on tail rounded, in 10 longitudinal rows, mostly smooth; only distal scales on ventral surface keeled. Dorsolateral stripe running on edge of second and third rows of dorsals when counted from midline. In live animals, dorsolateral stripe anteriorly salmon to pale orange, posteriorly yellowish or greenish, and blue on tail (Avila-Pires 1995). 
CommentThe reference for Colombia (AYALA 1986) might represent the recently described species T. oriximinensis. Fitch (1968) erroneously reported T. agilis from Ecuador by misidentifying Iphisa elegans (Avila-Pires 1995). Synonymy mainly after PETERS et al. 1970. 
EtymologyNamed after Latin “agilis” = mobile, agile, swift. 
References
  • Andersson, L. G. 1918. New lizards from South America. Collected by Nils Holmgren and A. Roman. Arkiv för Zoologi 11 (16): 1—9 - get paper here
  • Avila-Pires, T.C.S. 1995. Lizards of Brazilian Amazonia (Reptilia: Squamata). Zoologische Verhandelingen 299: 1-706 - get paper here
  • Ayala, S. C. 1986. Saurios de Colombia: Lista actualizada, y distribucion de ejemplares colombianos en los museos. Caldasia 15 (71-75): 555-575 - get paper here
  • Castoe, T.A.; Doan, T.M. & Parkinson, C.L. 2004. Data partitions and complex models in Bayesian analysis: the phylogeny of Gymnophthalmid lizards. Systematic Biology 53 (3): 448-469 - get paper here
  • Cole, Charles J.; Carol R. Townsend, Robert P. Reynolds, Ross D. MacCulloch, and Amy Lathrop 2013. Amphibians and reptiles of Guyana, South America: illustrated keys, annotated species accounts, and a biogeographic synopsis. Proceedings of the Biological Society of Washington 125 (4): 317-578; plates: 580-620 - get paper here
  • Donoso-Barros, R. 1968. The lizards of Venezuela (checklist and key). Carib. J. Sci. 8 (3-4): 105-122
  • Gardner, T.A., Ribeiro Junior, M.A., BarlowJ., Avila-Pires, T.C.S., Hoogmoed, M.S. & Peres, C. 2007. The Value of Primary, Secondary, and Plantation Forests for a Neotropical Herpetofauna. Conservation Biology 21 (3): 775–787 - get paper here
  • Gonzalez R. C. et al. 2020. Lista dos Nomes Populares dos Répteis no Brasil – Primeira Versão. Herpetologia Brasileira 9 (2): 121 – 214 - get paper here
  • Hoogmoed M.S.; de Avila-Pires T C S 1991. Annotoated checklist of the herpetofauna of Petit Saut, Sinnamary River, French Guiana. Zoologische Mededelingen 65: 53-88 - get paper here
  • Hoogmoed, M.S., & Lescure, J. 1975. An annotated checklist of the lizards of French Guiana, mainly based on two recent collections. Zoologische Mededelingen 49(13): 141-172. - get paper here
  • Morato, S.A.A.; Calixto, P.O.; Mendes, L.R.; Gomes, R.; Galatti, U.; Trein, F.L.; Oliveira, F.S.; Ferreira, G.N. 2014. Guia fotográfico de identificação da herpetofauna da Floresta Nacional de Saracá-Taquera, Estado do Pará. Curitiba: STCP Engenharia de Projetos Ltda.; Porto Trombetas: MRN – Mineração Rio do Norte S.A.; 213 p. - get paper here
  • Morato, Sérgio Augusto Abrahão; Guilherme Nunes Ferreira; Michela Rossane Cavilha Scupino (eds.) 2018. Herpetofauna da Amazônia Central: Estudos na FLONA de Saracá-Taquera. Curitiba, Pr: STCP Engenharia de Projetos Ltda.; Porto Trombetas, Pa: MRN – Mineração Rio do Norte S.A., 2018.<br />210p. - get paper here
  • Müller, L. 1923. Neue oder seltene Reptilien und Batrachier der Zoologischen Sammlung des bayr. Staates. Zool. Anz. 57 (3-4): 49-61 - get paper here
  • Nascimento F Paiva do; de Avila-Pires T C Sauer; da Cunha O Rodrigues 1987. Os repteis da area de Carajas, Para, Brasil (Squamata). 2. Boletim do Museu Paraense Emilio Goeldi NOVA SERIE ZOOLOGIA 3(1) 1987: 33-65
  • Oliveira, D.P.; S.M. Souza; L. Frazão; A.P. Almeida; T. Hrbek 2014. Lizards from central Jatapú River, Amazonas, Brazil. Check List 10 (1): 46-53 - get paper here
  • Paolillo 1985. Herpetological Review 16: 31-32 - get paper here
  • Pedroso-Santos, Fillipe; Patrick Ribeiro Sanches, and Carlos Eduardo Costa-Campos, 2019. Anurans and reptiles of the Reserva Extrativista Beija-Flor Brilho de Fogo, Amapá state, eastern Amazon. Herpetology Notes 12: 799-807 - get paper here
  • Peters, James A. & Donoso-Barros, Roberto 1970. Catalogue of the Neotropical Squamata: Part II. Lizards and Amphisbaenians. Bull. US Natl. Mus. 297: 293 pp. - get paper here
  • RIBEIRO-JÚNIOR, MARCO A. & SILVANA AMARAL 2017. Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. IV. Alopoglossidae, Gymnophthalmidae. Zootaxa 4269 (2): 151-196 - get paper here
  • Ribeiro-Júnior, Marco A. & Silvana Amaral 2016. Diversity, distribution, and conservation of lizards (Reptilia: Squamata) in the Brazilian Amazonia. Neotropical Biodiversity, 2:1, 195-421 - get paper here
  • Ruthven, A. G. 1916. Description of a new genus and species of lizard from British Guiana. Occ. Pap. Mus. Zool. Univ. Michigan (22): 4 pp. - get paper here
  • Vanzolini, P. E. & Rebouças-Spieker, Regina 1969. On a large and surprising sample of Calliscincopus agilis from Brasil, with the invalidation of the genus (Sauria, Teiidae). Papéis Avulsos de Zoologia 22 (13): 123-144 - get paper here
  • Vaz-Silva, W.; RM Oliveira, AFN Gonzaga, KC Pinto, FC Poli, TM Bilce, M Penhacek, L Wronski, JX Martins, TG Junqueira, LCC, Cesca VY, Guimarães RD. Pinheiro 2015. Contributions to the knowledge of amphibians and reptiles from Volta Grande do Xingu, northern Brazil Braz. J. Biol., 75 (3) (suppl.): S205-S218 - get paper here
  • Vitt, L.; Magnusson, W.E.; Ávila-Pires, T.C. & Lima, A.P. 2008. Guide to the Lizards of Reserva Adolpho Ducke, Central Amazonia. Attema, Manaus, 180 pp.
 
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