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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

2001; The Society for the Study of Amphibians and Reptiles; Volume: 35; Issue: 4 Linguagem: Inglês

10.2307/1565897

1937-2418

José Miguel Alfredo María Cei, José Alejandro Scolaro, Fernando Videla, José Miguel Alfredo María Cei, José Alejandro Scolaro,

Genetic diversity and population structure

-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 Neuquen, 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. al of Herpetology, Vol. 35, No. 4, pp. 597-605, 2001 ight 20 1 Society for the Study of Amphibians and Reptiles The complex taxonomic history of the South American polychrotid lizards of the genus Pristidactylus was summarized by Etheridge and Williams (1985). The Chilean species Pristidactylus torquatus, Pristidactylus valeriae, Pristidactylus alvaroi, and Pristidactylus volcanensis occur west of the Andean Cordillera (Lamborot and Diaz, 1987). The still-recognized Argentinean 2 Corresponding Author. Present address: Hilario Cuadros 81, 5501, Godoy Cruz, Mendoza, Argentina; E-mail: fvidela@lab.cricyt.edu.ar i istor of the South i liza s of t e genus Prisi t eridge and . il a s ecies Pristidaci i t l s aleriae, Pristidactyi i l s olcanensis occur species are scattered along the eastern side of the Andes, from the mountains of Cordillera and Precordillera (Pristidactylus scapulatus) to the flat dry habitats of the Monte and the Atlantic coast (Pristidactylus fasciatus) and on the isolated high, wet, rocky meadows atop the Sierra de la Ventana, in Buenos Aires province (Pristidactylus casuhatiensis) and similar environments atop Central Sierras in C6rdoba (Pristidactylus achalensis; Fig. 1). The subgeneric taxon Pristidactylus was established by Fitzinger (1843) having as a type-species Leiosaurus fasciatus Dumeril and Bibron 597 This content downloaded from 157.55.39.4 on Fri, 09 Sep 2016 04:46:08 UTC All use subject to http://about.jstor.org/terms