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Higher TaxaLiolaemidae, Iguania, Sauria, Squamata (lizards)
Common Names 
DistributionW Argentina (San Guillermo National Park)

Type locality: at the flood plain of the northern margin of the Blanco River, Quebrada Alcaparrosa (29° 30’ 47.5’’ S, 69° 10’ 27.3’’ W), 2270 m elevation, southern section of the San Guillermo National Park, Iglesia Department, San Juan province, Argentina.  
TypesHolotype: MLP R 5139, an adult male collected February 11, 2005, by J. C. Acosta and J. H. Villavicencio. 
DiagnosisDiagnosis: Liolaemus cinereus sp. nov. is a small iguanid lizard (63 mm maximum SVL in females), with a relatively long tail (57 % of total length) and low number of scales around midbody (58–62); dorsal scales moderately keeled; precloacal pores only in males; a bulged patch of enlarged scales on the proximal posterior surface of the thigh in both sexes, more evident in males; lacking of light vertebral or dorsolateral stripes; ash-grey dorsal background color with small transverse brown spots in two paravertebral series, and white scales roughly ordered on the trunk; antehumeral fold without black pigment (only faint greyish in the male, absent in females); scapular region pattern represented only by a prescapular dark spot dorsal to the antehumeral fold; throat and ventral neck brown in males; white, slightly dotted, in females. The new species is a member of the monophyletic boulengeri group of the genus Liolaemus. Within this group L. cinereus belongs to the darwinii complex, as defined by Etheridge (1993). 
CommentMember of the darwinii group of Liolaemus within the monophyletic boulengeri species group.

Abundance: only known from its original description (Meiri et al. 2017). 
EtymologyThe specific epithet is a Latin adjective meaning “ash-grey”, in reference to the overall background color characteristic in this species. 
  • ABDALA, CRISTIAN SIMÓN; ANDRÉS SEBASTIÁN QUINTEROS,, FEDERICO ARIAS, SABRINA PORTELLI & ANTONIO PALAVECINO 2011. A new species of the Liolaemus darwinii group (Iguania: Liolaemidae) from Salta Province, Argentina. Zootaxa 2968: 26–38 - get paper here
  • AVILA, LUCIANO JAVIER; LORENA ELIZABETH MARTINEZ & MARIANA MORANDO 2013. Checklist of lizards and amphisbaenians of Argentina: an update. Zootaxa 3616 (3): 201–238 - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • MONGUILLOT, J.C.; M.R. CABRERA, J.C. ACOSTA & J. VILLAVICENCIO 2006. A new species of Liolaemus (Reptilia: Iguanidae) from San Guillermo National Park, western Argentina. Zootaxa 1361: 33-43 - get paper here
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