A new species of Xantusia (Squamata: Xantusiidae) from Zacatecas, Mexico

Abstract

We describe a new species of Xantusia freom the Rio Juchipila in southwestern Zacetecas, Mexico. This southernmost known member of the genus is found in a semitropical habitat on the Pacific versant and lives under exfoliating bark of live mesquites, Prosopis. It is most similar in morphology to X. vigilis but differs in numbers of undivided fourth toe lamellae and scales composing the caudal annulus.