Rediscovery of the snake chersodromus rubriventris (Squamata: Colubridae) in cloud forest of the sierra madre oriental, México

As presently recognized, the snake genus Chersodromus (Colubridae) is composed of 2 species, C. liebmanni and C. rubriventris, both of which are endemic to eastern Mexico. Distribution of the genus is largely restricted to the states of Veracruz and Oaxaca and broadly corresponds to the south of the Sierra Madre Oriental and the eastern portion of the Transvolcanic Belt. Chersodromus liebmanni is the more common species of the genus and is distributed in the foothills of several localities in central Veracruz and northern Oaxaca. However, C. rubriventris is restricted to only a few small localities in San Luis Potosi and now the state of Hidalgo. Both species appear to be restricted to montane forest communities, including pine-oak, cloud forest, and tropical forest habitats.