Sympatric amphisbaenids from Manso Dam region, Mato Grosso State, Western Brazil, with the description of a new two-pored species of Amphisbaena (Squamata, Amphisbaenidae)

A new species in the genus Amphisbaena is described based on a single specimen road killed on MT 351 in the region under the influence of Manso Dam, at Chapada dos Guimaraes municipality, state of Mato Grosso, Brazil. It is a small amphisbaenid with two precloacal pores, 139 body annuli, 18/14 segments on the midbody and an immaculate white belly. A checklist of the 25 species of amphisbaenids recorded for the Cerrado biome is presented. Although ecological and/or historical features might be the reason for the unusual amphisbaenid richness of eight sympatric species at Manso Dam region, the extensive collecting efforts at this site seem to offer a better explanation for finding eight sympatric species.