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Eunectes notaeus COPE, 1862

IUCN Red List - Eunectes notaeus - Least Concern, LC
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Higher TaxaBoidae (Boinae), Henophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Yellow Anaconda
G: Paraguay-Anakonda, Gelbe Anakonda
Portuguese: Boiguaçu, Curudiu, Curundiu, Quetomeniope, Sucuri, Sucuri-Amarela, Sucurijú, Sucuri-do-Pantanal, Sucuriu 
SynonymEunectes notaeus COPE 1862: 70
Eunectes murinus PERACCA 1895 (nec LINNAEUS)
Eunectes wieningeri STEINDACHNER 1903: 15
Eunectes notaeus — KAHL et al. 1980: 207
Eunectes notaeus — CEI 1993
Eunectes notaeus — LEYNAUD & BUCHER 1999: 14
Eunectes notaeus — MCDIARMID, CAMPBELL & TOURÉ 1999: 201
Eunectes notaeus — ZARACHO et al. 2014
Eunectes notaeus — WALLACH et al. 2014: 291
Eunectes notaeus — REYNOLDS & HENDERSON 2018: 22
Eunectes notaeus — NOGUEIRA et al. 2019
Eunectes notaeus — DUBOIS et al. 2024 
DistributionBolivia, Paraguay, Uruguay, W Brazil (Mato Grosso, Mato Grosso do Sul, Rio Grande do Sul, Paraná [HR 27: 216], São Paulo), NE Argentina (Chaco, Corrientes, Entre Rios, Formosa, Misiones, Santa Fé, Corrientes, Santiago del Estero).

Type locality: Paraguay River and its tributaries  
Reproductionovoviviparous 
TypesHolotype: lost, was USNM 4707 (lost fide Reynolds & Henderson 2018)
Holotype: NMW 18929 [wieningeri] 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 3789 characters), are available for collaborators and contributors. Please contact us for details. 
CommentHybridization: Hybrids between Eunectes notaeus and E. murinus have been described and E. deschauenseei is extremely closely related to E. notaeus (fide DIRKSEN & BÖHME 1998).

Phylogenetics: E. notaeus, beniensis, and deschauenseei are closely related and Rivas et al. 2024 suggested to synonymize them, cofirming data by Tarkhnishvili et al. 2022.

Distribution: see map and list of localities in Tarkhnishvili et al. 2022: 380 (Fig. 1). 
EtymologyNamed after Greek notiaios (νωτιαῖος), of the back. (COPE 1862, Esteban Lavilla, pers. comm., April 2024) 
References
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