Bothrocophias microphthalmus, or the small-eyed toad-headed pit viper, is a species of venomous snake in the family Viperidae.McDiarmid RW, Campbell JA, Touré TA. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists' League. 511 pp. (series). (volume). The species is endemic to northwestern South America.
Geographic range B. microphthalmus is found in Brazil, Colombia, Ecuador, Peru, and Bolivia.
The type locality is "between Balsa Puerto and Moyobamba, Peru".
Description and Characteristics The small eyed toad headed pit viper
References
Further reading Cope ED. 1875. "Report on the Reptiles brought by Professor James Orton from the middle and upper Amazon, and Western Peru". J. Acad. Nat. Sci. Philadelphia (2) 8: 159–183. (Bothrops microphthalmus, new species, pp. 182–183).