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The Present Status of Argentinean Polychrotid Species of the Genus Pristidactylus and Description of Its Southernmost Taxon as a New Species

José Miguel Cei, José Alejandro Scolaro and Fernando Videla
Journal of Herpetology
Vol. 35, No. 4 (Dec., 2001), pp. 597-605
DOI: 10.2307/1565897
Stable URL: http://www.jstor.org/stable/1565897
Page Count: 9
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Present Status of Argentinean Polychrotid Species of the Genus Pristidactylus and Description of Its Southernmost Taxon as a New Species
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Abstract

A new species of Pristidactylus from the southern Patagonian region of Argentina is described. This new species shows peculiar throat coloration in males, a secondary sex character that is unique in this genus. Different character combinations led to the revalidation of Pristidactylus araucanus from the basaltic districts of Mendoza and Neuquén, Argentina. The conservative retention of the juvenile pattern in adult females, besides other mensural characters in both sexes, indicates its specific identity relative to Pristidactylus scapulatus and Pristidactylus fasciatus. General considerations of the evolutionary history of the genus Pristidactylus are reviewed and a key to the Argentinean taxa is provided.

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