Atractus gigas was described based on a single specimen from western Andes of Ecuador. Although recently, a second specimen of A. gigas was reported close to the type locality just on the basis of photographic vouchers. During the examination of Ecuadorian and Peruvian collections, we found additional specimens of this poorly known snake. We also collected new individuals of Atractus gigas during fieldwork carried out on northeastern portion of the Peruvian Andes. In this paper, we report new specimens, localities, and data on meristic, morphometric and color pattern variation for the species. We associate the variation displayed by these character systems with sexual, geographic, and ontogenetic phenomena respectively. We provide detailed comparisons and diagnosed Atractus gigas from all others members of this highly diverse and complex genus, and comment on their natural history and ontogeny.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 5 • No. 2