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Adercosaurus vixadnexus MYERS & DONNELLY, 2001

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Higher TaxaGymnophthalmidae (Cercosaurinae s.l., Ecpleopodinae), Sauria, Gymnophthalmoidea, Squamata (lizards) 
Common Names 
SynonymAdercosaurus vixadnexus MYERS & DONNELLY 2001
Adercosaurus viadneus [sic] — BARRIO-AMOROS & BREWER-CARIAS 2008 
DistributionVenezuela (NW Tepuis region)

Type locality: wet gallery forest on Cerro Yutajé, 1700 m elevation (5°46’N, 66°08’W), Amazonas, Venezuela.  
TypesHolotype: EBRG 3126 (field no. CWM 19809), an adult male; collected February 25, 1995, AMNH–TERRAMAR Expedition. See locality 1 on map (fig. 1). 
CommentType species: Adercosaurus vixadnexus MYERS & DONNELLY 2001 is the type species of the genus Adercosaurus MYERS & DONNELLY 2001.

Subfamily: the subfamilial classification of this genus is still unresolved (T. Doan, pers. comm., 2 Jun 2014).

For diagnostic morphological characters distinguishing Marinussaurus, Amapasaurus, Anotosaura, Arthrosaura, Colobosauroides, Dryadosaura,Ecpleopus, Kaieteurosaurus, Leposoma, and Pantepuisaurus see Table 2 in PELOSO et al. 2011.

Abundance: only known from the type specimen (Meiri et al. 2017). 
EtymologyETYMOLOGY (genus): From the Greek aderkes (something unexpected or unseen), and sauros—an unexpected lizard. Gender masculine.

ETYMOLOGY: The species name is compounded from the Latin adverb vix (barely, hardly) and the passive past participle adnexus (tied together or joined, connected), calling attention to the possibly diagnostic point contact of the frontoparietal plates (fig. 34 in MYERS & DONNELLY 2001). 
  • Barrio-Amorós, César L. & Brewer-Carias, Charles 2008. Herpetological results of the 2002 expedition to Sarisari–ama, a tepui in Venezuelan Guayana, with the description of five new species. Zootaxa 1942: 1-68 - 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
  • Myers, C. W. & M. A. DONNELLY 2001. Herpetofauna of the Yutajé-Corocoro Massif, Venezuela: second report from the Robert G. Goelet American Museum - Terramar Expedition to the Northwestern Tepuis. Bull. Amer. Mus. Nat. Hist. (261): 1-85
  • Myers, Charles W. Rivas Fuenmayor, Gilson; Jadin, Robert C. 2009. New species of lizards from Auyantepui and La Escalera in the Venezuelan Guayana, with notes on "microteiid" hemipenes (Squamata, Gymnophthalmidae). American Museum Novitates (3660): 1-32 - get paper here
  • RIVAS, GILSON A.; CÉSAR R. MOLINA, GABRIEL N. UGUETO, TITO R. BARROS, CÉSAR L. BAR- RIO-AMORÓS & PHILIPPE J. R. KOK 2012. Reptiles of Venezuela: an updated and commented checklist. Zootaxa 3211: 1–64 - get paper here
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