Skeletal variation within the darwinii group of Liolaemus (Iguania: Liolaemidae): new characters, identification of polymorphisms and new synapomorphies for subclades

Linda Díaz Fernández, Andrés S. Quinteros, Fernando Lobo


A total of 55 skeletal characters (continuous and discrete) were analyzed for species of the L. darwinii group: L. albiceps, L. chacoensis, L. grosseorum, L. irregularis, L. koslowskyi, L. ornatus, L. quilmes, plus L. inacayali (L. telsen group) and L. scapularis (L. wiegmannii group). We report polymorphic intraspecific variation that was not previously taken into account and we describe 21 new characters that provide original information across the group. We detected several morphological synapomorphies for the darwinii group and subclades. Meckel’s cartilage enclosed by dentary outgrowth on lingual side of lower jaw (synapomorphy of the subgenus Liolaemus sensu stricto, and of the patagonicus group of Phymaturus) occurs also within the L. darwinii group. The morphology of maxillary teeth with three conspicuous cusps can be a potential synapomorphy of the Eulaemus subgenus. As we show in the present study, the morphology of maxillary teeth can have an adaptive value. Characters that were studied in other groups of lizards were informative for Liolaemus.

Full Text:



  Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License (CC-BY- 4.0)

Firenze University Press
Via Cittadella, 7 - 50144 Firenze
Tel. (0039) 055 2757700 Fax (0039) 055 2757712