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Eunectes beniensis is a nonvenomous boa species known only from the northeastern parts of Bolivia, but it possibly occurs in adjacent parts of Brazil.

Eunectes beniensis
Eunectes beniensis, Rio Beni, Puerto Salinas, El Beni, Bolovia.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Boidae
Genus: Eunectes
Species: E. beniensis
Binomial name
Eunectes beniensis
Dirksen, 2002
Common names: Bolivian anaconda, Beni anaconda



The four-metre long Eunectes beniensis was initially believed to be the result of hybridization between green and yellow anacondas, but was later determined to be a distinct species. The taxonomic status is not clear, due to less information and the appearance similarity to Eunectes notaeus. It is closely related to Eunectes notaeus and Eunectes deschauenseei.

Distribution and habitatEdit

Usually aquatic muddy swampy flooded areas.

See alsoEdit


  • Dirksen, Lutz 2002. Anakondas. Natur und Tier Verlag (Münster), 190 pp.
  • 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). Russian Journal of Herpetology 12 (3): 223-229.
  • 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.
  • Anonymous (1963), «Hybrid anacondas», Anim. Kingdom, 66, 31.
  • Dirksen L. (1995), Zur Reptilienfauna Boliviens unter spezieller Berücksichtigung taxonomischer und zoogeographischer Aspekte. MSc Thesis, Univ. of Bonn, Bonn.
  • Dirksen L. (2000), Monographische Revision der Gattung Eunectes Wagler, 1830 (Serpentes, Boidae). PhD Thesis, Univ. of Bonn, Bonn.

Further readingEdit