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Eunectes deschauenseei DUNN & CONANT, 1936

IUCN Red List - Eunectes deschauenseei - Data Deficient, DD
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Higher TaxaBoidae (Boinae), Henophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: DeSchauensee’s Anaconda, Dark-spotted Anaconda
Portuguese: Anaconda, Sucuri, Sucuri-Malhada, Anaconda-de-Manchas-Escuras 
SynonymEunectes deschauenseei DUNN & CONANT 1936: 505
Eunectes deschauenseei — MCDIARMID, CAMPBELL & TOURÉ 1999: 200
Eunectes deschauenseei — STARACE 1998: 109
Eunectes deschauenseei — WALLACH et al. 2014: 291
Eunectes deschauenseei — REYNOLDS & HENDERSON 2018: 22
Eunectes deschauenseei — NOGUEIRA et al. 2019
Eunectes deschauenseei — DUBOIS et al. 2024 
DistributionNE Brazil (Marajo I; Pará: [HR 31: 255], Amapá), French Guiana

Type locality: Marajo, Brazil.  
Reproductionovovivparous 
TypesHolotype: ANSP 20891, female, collected by R.M. de Schauensee in 1924. 
DiagnosisAdditional details, e.g. a detailed description or comparisons (1805 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy: Amaral (1944, 1948) considered E. deschauenseei to be synonymous with E. notaeus.

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. 
EtymologyNamed after Rodolphe Meyer de Schauensee, who donated a specimen to the Philadelphia Zoo in 1924. This species is not listed by GASC & RODRIGUES 1980. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Dirksen, L. 1999. Zur Kenntnis der Anakonda-Arten (Serpentes: Boidae: Eunectes). I: Eunectes deschauenseei Dunn & Conant, 1936. Herpetofauna 21 (122): 12-21 - get paper here
  • Dirksen, L. 2003. Marajó - heiss-feuchtes Amazonas-Paradies. Reptilia (Münster) 8 (40): 75-81 - get paper here
  • Dirksen, L. 2007. Anakonda FAQ. Reptilia (Münster) 12 (64): 87-89 - get paper here
  • Dirksen, L. & R. W. Henderson 2002. Eunectes deschauenseei. Catalouge of American Amphibians and Reptiles 755 - get paper here
  • Dirksen, Lutz 2002. Anakondas. Natur und Tier Verlag (Münster), 190 pp. - get paper here
  • Dirksen, Lutz, and Wolfgang Böhme 2005. Studies on anacondas III. A reappraisal of Eunectes beniensis Dirksen, 2002, from Bolivia, and a key to the species of the genus Eunectes Wagler, 1830 (Serpentes: Boidae). Russ. J. Herpetol. 12 (3): 223-229. - get paper here
  • Dubois, A., Denzer, W., Entiauspe-Neto, O. M., Frétey, T., Ohler, A., Bauer, A. M., & Pyron, A. 2024. Nomenclatural problems raised by the recent description of a new anaconda species (Squamata, Serpentes, Boidae), with a nomenclatural review of the genus Eunectes. Bionomina 37: 8-58 - get paper here
  • Dunn,E.R. & Conant,R. 1936. Notes on anacondas, with descriptions of two new species. Proc. Acad. Nat. Sci. Philadelphia 88: 503-506 - get paper here
  • Franca, F.G.R.; Mesquita, Daniel Oliveira and Guarino Rinaldi Colli 2006. A CHECKLIST OF SNAKES FROM AMAZONIAN SAVANNAS IN BRAZIL, HOUSED IN THE COLEÇÃO HERPETOLÓGICA DA UNIVERSIDADE DE BRASÍLIA, WITH NEW DISTRIBUTION RECORDS. Occ. Pap. Oklahoma Mus. Nat. Hist., Univ. Oklahoma 17: 1-13
  • Gasc & Rodrigues 1980. Liste preliminaire des Serpents de la Guyane francaise. Bull. Mus. Nat. Hist. Nat. Paris 2 (4): 559-598
  • 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
  • Kluge, A.G. 1991. Boine snake phylogeny and research cycles. Publ. Mus Zool Univ Michigan 178: 1-58 - get paper here
  • McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 pp.
  • Müller, P. 1970. Über die Eunectes-Arten von Marajó. Salamandra 6 (3-4): 140-141 - get paper here
  • Murphy, John C. & Tom Crutchfield 2019. Giant Snakes - A Natural History. Book Services, 345 pp. - get paper here
  • Nogueira, Cristiano C.; Antonio J.S. Argôlo, Vanesa Arzamendia, Josué A. Azevedo, Fausto E. Barbo, Renato S. Bérnils, Bruna E. Bolochio, Marcio Borges-Martins, Marcela Brasil-Godinho, Henrique Braz, Marcus A. Buononato, Diego F. Cisneros-Heredia, 2019. Atlas of Brazilian snakes: verified point-locality maps to mitigate the Wallacean shortfall in a megadiverse snake fauna. South American J. Herp. 14 (Special Issue 1):1-274 - get paper here
  • Petzold, H. G. 1983. Die Anakondas: Gattung Eunectes. A. Ziemsen, Wittenberg Lutherstadt, Die Neue Brehm-Bucherei Heft 554 142 pp.
  • Reed, R.N. and G.H. Rodda 2009. Giant Constrictors: Biological and Management Profiles and an Establishment Risk Assessment for Nine Large Species of Pythons, Anacondas, and the Boa Constrictor. U.S. Geological Survey, xviii + 323 pp. - get paper here
  • Reynolds, R. Graham and Robert W. Henderson 2018. Boas of the World (Superfamily Booidae): A Checklist With Systematic, Taxonomic, and Conservation Assessments. Bulletin of the Museum of Comparative Zoology Sep 2018, Vol. 162, No. 1: 1-58. - get paper here
  • Rivas, J. A., De La Quintana, P., Mancuso, M., Pacheco, L. F., Rivas, G. A., Mariotto, S., ... & Corey-Rivas, S. 2024. Disentangling the Anacondas: Revealing a New Green Species and Rethinking Yellows. Diversity, 16(2), 127
  • Schmidt, ? 1985. De Schauensee’s Anakonda. Herpetofauna 7 (38): 22 - get paper here
  • Starace, Fausto 1998. Guide des Serpents et Amphisbènes de Guyane. IBIS Rouge Editions, Guadeloupe, Guyane, 450 pp.
  • Starace, Fausto 2013. Guide des Serpents et Amphisbènes de Guyane. Ibis Rouge Editions, Matoury, Guyane, ISBN 978-2-84450-407-4 - get paper here
  • Tarkhnishvili, D., Hille, A., Waller, T., Todua, M., Murtskhvaladze, M., & Böhme, W. 2022. Morphological trends and genetic divergence in anacondas, genus Eunectes Wagler, 1830 (Serpentes: Boidae). Amphibia-Reptilia, 43(4), 379-393 - get paper here
  • Tavares-Pinheiro, Rodrigo; Vinícius Antônio Martins Barbosa Figueiredo, Fillipe Pedroso-Santos, Patrick Ribeiro-Sanches, Carlos Eduardo Costa-Campos 2021. Snout and abnormal eyes: a rare case of malformations reported in Dark Spotted Anaconda Eunectes deschauenseei Dunn & Conant, 1936 (Serpentes: Boidae) from the Amapá State, northern Brazil. Herpetology Notes 14: 873-875 - get paper here
  • Trutnau, L. 1982. Einige Bemerkungen über die neuweltlichen Riesenschlangen der Gattung Eunectes Wagler 1830. Herpetofauna 4 (17): 14-21 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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