Leynaud, Gerardo C. and Enrique H. Bucher. 1999. La fauna de serpientes del Chaco Sudamericano: diversidad, distribución geografica y estado de conservación. Academia Nacional de Ciencias Miscelanea. (98):1-46. $12.00
The Snake fauna of the South American Chaco: Diversity, geographic distribution and conservation status. The available information on the snakes of the South American Chaco is summarized. For each species, information on taxonomy, habitat prferences, feeding, conservation status and a distribution map are included. in total 63 species and subspecies belonging to 30 genera and 6 familes are listed. Nine taxa (5 species and 4 subspecies) are endemic to the Chaco. Seven other taxa (3 species and 4 subspecies) are mostly restricted to the Chaco region. Five species are included in CITES Appendices (I and II): all the Boidae species (Boa contrictor, Eunectes notaeus and Epicrates cenchria) and two Colubridae species (Hydrodynastes gigas and Boiruna maculata). Snake diversity in the Chaco show a predominant east-west descreasing gradient (related to rainfall) and a secondary, less marked north-south gradient (which follows a temperature gradient).
Contains one color plate (shown on the right) and dot distribution maps for each species.
