Full length paper

Nueva especie del grupo de Liolaemus darwinii (Iguania: Liolaemidae) del noroeste de Argentina

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Cuadernos de Herpetología 19 (2): 3-18, 2006 popper@tucbbs.com.ar

Abstract

Within the lizard genus Liolaemus there is a group of species characterized by the presence of a patch of enlarged scales on the posterior proximal surface of the thigh called the "boulengeri group". Within the boulengeri group is a clade called the "darwinii group" characterized by, among other things, the presence of posterior marginal teeth with straight borders, and marked sexual dichromatism. Within the darwinii group is subgroup called the "ornatus group" that lives in the Puna and Prepuna phytogeographic regions of Argentina, and may be distinguished by its viviparity, mainly herbivorous diet, and a high number of precloacal pores in females. The species currently included in the ornatus group are L. albiceps, L. irregularis, L. calchaqui, and L. ornatus. In this paper a new species of the ornatus group of Liolaemus is described from the departments of Chicoana, La Poma and Cachi in the Salta province, Argentina, from elevations between 2,800 and 4,100 m. This species exhibits marked sexual dichromatism, with the a dorsal pattern more prominent in males, dorsolateral bands well marked, a variety of colors including very light brown to yellow, a pigmented throat, and yellow or reddish-brown abdomen. As in other species of the ornatus group the new species is viviparous. This species been confused with Liolaemus ornatus in the past, but may be distinguished from that species by its coloration and scutellation.

Key words:

Liolaemus lavillai sp. nov.; grupo boulengeri; Liolaemidae; Iguania; Salta; Argentina

Received: Dec. 09, 2005 ▪ Accepted: Mar. 20, 2006

Associate Editor: F. Cruz
Abdala, C.S. & Lobo, F. 2006. Nueva especie del grupo de Liolaemus darwinii (Iguania: Liolaemidae) del noroeste de Argentina. Cuadernos de Herpetología 19: 3-18.