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Epicrates crassus COPE, 1862

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Higher TaxaBoidae (Boinae), Henophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesG: Paraguay-Regenbogenboa
Portuguese: Jiboia-Arco-Íris, Jiboia-Parda, Salamanta, Salamanta-do-Cerrado, Salamanta-do-Sudeste, Uaçubói 
SynonymEpicrates crassus COPE 1862
Epicrates cenchria crassus — AMARAL 1929: 140
E[picrates]. cenchria polylepis AMARAL 1935: 236
Epicrates cenchria crassus — PETERS & OREJAS-MIRANDA 1970
Epicrates cenchria crassus — FREIBERG 1982
Epicrates crassus — PASSOS & FERNANDES 2008
Epicrates crassus — WALLACH et al. 2014: 273
Epicrates crassus — REYNOLDS & HENDERSON 2018: 20
Epicrates crassus — NOGUEIRA et al. 2019 
DistributionParaguay, Bolivia (Andean slopes), Argentina (grasslands), Brazil (Cerrado in Rondonia, Pará, Mato Grosso, Tocantins, Goiás, Minas Gerais, São Paulo, grassland of Mato Grosso do Sul, Rio Grande do Sul, Bahia)

Type locality: Cadosa, Paraná River, Paraguay. Corrected to Gardosa, Rio Paraná, Paraguay, by Williams and Francini (1991).  
TypesHolotype: USNM 12413, adult
Holotype: IBSP 9165 [polylepis] 
DiagnosisDiagnosis.—Distinguished from Epicrates cenchria, E. maurus, and E. alvarezi by having dorsal ground color light to dark brown in juveniles and adults, number of subcaudal , 45 scales. Distinguished from E. cenchria and E. alvarezi by having barely conspicuous parietal crest, and reduced alary process of vomer; from E. alvarezi by having inverted hemipenis bifurcates after 7th subcaudal; from E. assisi by having lobes slightly smaller than hemipenial body, approximately twice longer than wide, lobes slightly clavate, ventrals generally , 245 scales. Refer to Tables 6–7 for additional diagnostic features of the continental Epicrates. 
CommentSynonymy mostly after PASSOS & FERNANDES 2008.

Habitat: partly arboreal (Harrington et al. 2018). 
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