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Higher TaxaAnguidae (Gerrhonotinae), Diploglossa, Anguimorpha, Sauria, Squamata (lizards)
Common Names 
Gerrhonotus infernalis — GOOD 1994 (in part.)
Gerrhonotus mccoyi — GARCÍA-VÁZQUEZ et al. 2019 
DistributionMexico (Coahuila)

Type locality: Poza Churince, municipality of Cuatro Ciénegas, Coahuila, Mexico (26°55’11.9’’N, 102°06’53.2’’W; datum 1⁄4 WGS84), 739 m elevation  
TypesHolotype: MZFC 29654 (field number UOGV 1438), adult male, collected 9 September 2007 by U.O. García-Vázquez, M. Trujano-Ortega, and A. Contreras-Arquieta. Paratypes. 15 specimens; all from the municipality of Cuatro Cie ́negas, Coahuila, Mexico:13 (MZFC29655–66, 29669) from the same locality as the holotype and two (MZFC 29667–68) from Pozas Azules, Rancho Pronatura (26849032.90 0N, 102801020.90 0W; datum 1⁄4 WGS84), 714 m elevation. 
DiagnosisDiagnosis: Gerrhonotus mccoyi sp. nov. can be distinguished from its congeners by a combination of characters which includes the presence of a cantholoreal scale (72%; n = 16), a dark mark extending anteriorly from the lower temporal scales through the lower border of the orbit to the preocular or cantholoreal scales, keeled dorsal scales, usually (75%; n = 16) 7–9 dorsal cross-bands mostly interrupted or barely discernible on middorsum (few cross-bands continuous, noticeable across middorsum in some specimens; midsection of cross-bands paler, narrower than the lateral sections), usually indiscernible vertical dark bars on the lateral fold (few, faint bars occasionally present), and black flecks scattered on the venter. 
EtymologyThe species epithet is a noun in the genitive case and a patronym for the late Clarence Jack McCoy in recognition of his many and significant contributions to the knowledge of the amphibians and reptiles from the Cuatro Ciénegas Basin. 
  • Álvarez, F.; M. Ojeda (eds.) 2019. Animal Diversity and Biogeography of the Cuatro Ciénegas Basin, Cuatro Ciénegas Basin: An Endangered Hyperdiverse Oasis. Springer, 231 pp. - get paper here
  • García-Padilla E, DeSantis DL, Rocha A, Mata-Silva V, Johnson JD, Wilson LD. 2020. Conserving the Mesoamerican herpetofauna: the most critical case of the priority level one endemic species. Amphibian & Reptile Conservation 14(2) [General Section]: 73–132 (e240) - get paper here
  • García-Vázquez, Uri Omar; Arturo Contreras-Arquieta, Marysol Trujano-Ortega, and Adrián Nieto-Montes de Oca 2018. A New Species of Gerrhonotus (Squamata: Anguidae) from the Cuatro Ciénegas Basin, Coahuila, Mexico. Herpetologica 74 (3): 269-278. - get paper here
  • García-Vázquez, Uri Omar; Marysol Trujano-Ortega, Arturo Contreras- Arquieta, Omar Ávalos-Hernández, Omar Osvaldo Escobedo-Correa, and Pablo Corcuera 2019. Chapter 13 Diversity of Amphibians and Reptiles in the Cuatro Ciénegas Basin. In: Álvarez, F.; M. Ojeda (eds.), Animal Diversity and Biogeography of the Cuatro Ciénegas Basin, Cuatro Ciénegas Basin. Springer, pp. 175-188 - get paper here
  • Lazcano D, Nevárez-de los Reyes M, García-Padilla E, Johnson JD, Mata-Silva V, DeSantis DL, Wilson LD. 2019. The herpetofauna of Coahuila, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 13(2) [General Section]: 31–94 (e189) - get paper here
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