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Zootaxa ; 3620: 245-59, 2013.
Article in English | MEDLINE | ID: mdl-26120707

ABSTRACT

The main goal of this manuscript is the reevaluation of the taxonomic status of the teiid lizard Contomastix charrua, known only from Cabo Polonio, a small coastal rocky outcrop in southeastern Uruguay. This species was erected on the basis of the presence of a second pair of ceratobranchials and longer cornua in the hyoid bone, in addition to a reduced expression of the pattern of coloration as compared with C. lacertoides. Nevertheless, we found that both species have indistinguishable hyoid morphology, bearing C. lacertoides a noticeable second pair of ceratobranchials. Besides, we realized that the pattern of coloration in this species is more variable than previously considered. As a result of the present work, C. charrua is included in the synonymy of C. lacertoides. In addition, we provide some observations on the holotype of Cnemidophorus grandensis, a junior synonym of C. lacertoides.


Subject(s)
Lizards/classification , Animals , Argentina , Brazil , Female , Hyoid Bone/anatomy & histology , Lizards/anatomy & histology , Lizards/physiology , Male , Pigmentation , Uruguay
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