[Physaloptera lutzi (Nematoda, Physalopteridae) parasite of Liolaemus (Iguania, Tropiduridae) from north-western Argentina].

Specimens collected in several localities from Salta and Tucumán provinces (north-western Argentina) Liolaemus quilmes and L. ornatus (oviparous population), and L. alticolor (viviparous population) were dissected. The specimens of lizards examinated have nematodes, in stomach, fore-gut and cloaca, identified as Physaloptera lutzi Guimaraes, Cristófaro and Rodrigues, 1976. This represents the first record for this parasite from Liolaemus species in Argentina. Morphologic and morphometric parasitological studies were done. The specimens were drawn and photographed. Also, the following parasitic infection indexes were calculated: prevalence, mean and maximum intensity.