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Elgaria velazquezi GRISMER & HOLLINGSWORTH, 2001

IUCN Red List - Elgaria velazquezi - Least Concern, LC

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Higher TaxaAnguidae (Gerrhonotinae), Diploglossa, Anguimorpha, Sauria, Squamata (lizards)
Common NamesE: Central Peninsular Alligator Lizard
S: Lagarto de Bjaj California 
SynonymElgaria velazquezi GRISMER & HOLLINGSWORTH 2001 
DistributionMexico (Baja California Sur)

Type locality: 41.5 km W by Mexican Highway 1 of Santa Rosalia at 27°25'W, 112°26'N, 400 m elevation Baja California Sur (BCS)  
TypesHolotype: SDNHM = SDSNH 68679, paratype: ROM 13382, from Mexico, Baja California Sur, San Ignacio, 1 km W of town 27.2815, -112.9047. 
DiagnosisDiagnosis: Elgaria velazquezi is separated from E. coerulea, E. multicarinata, E. cedrosensis, and E. paucicarinata by having a hatchling-juvenile color pattern consisting of immaculate, well-defined, pale-colored transverse bands on the neck, body, and anterior portion of the tail. It is separated from E. kinrgi,E. pananmintina, E. parva, E. cedrosensis, and E. paucicarinata by having strongly keeled dorsal scales. It can be further separated from E. coerulea and E. multicarinata by having a triangularly shaped lower subocular scale as opposed to having a squarish subocular; having black and white labial scales as opposed to having gray labials; and having black markings in the lateral fold as opposed to lacking them. It can be further separated from E. cedrosensis and E. paucicarinata by lacking a distinct, dark dorsal postorbital stripe (one of nine specimens of E. velazquezi has a faint postorbital stripe); having dark circular dorsal head markings in adults rather than randomly distributed, irregularly shaped blotches as in E. paucicarinata or having a nearly uni-color head as in many individuals of E.cedrosensis (one of nine specimens of E.cedrosensis has faint blotches on thehead); having bar-shaped, transverse blackmarkings in the lateral fold as opposed to a black reticulum; having bar-shaped,transverse and circular white markings inthe lateral body fold as opposed to having irregularly shaped white markings as in E.paucicarinata or having only circular white markings as in E. cedrosensis; and having the white markings of the lateral fold extending onto the lateral-most ventralscales. 
CommentDistribution: see map in Leavitt et al. 2017: Fig. 1. 
EtymologyNamed in honour of Sr. Victor Velázquez-Solis for his extensive knowledge of the natural history of the herpetofauna of the Southern Baja California and for his support of the authors field work. 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Grismer, L. Lee and Bradford D. Hollingsworth 2001. A taxonomic review of the endemic Alligator Lizard Elgaria paucicarinata (Anguidae: Squamata) of Baja California, México with a description of a new species. Herpetologica 57 (4):488-496 - get paper here
  • Jones, L.L. & Lovich, R.E. 2009. Lizards of the American Southwest. A photographic field guide. Rio Nuevo Publishers, Tucson, AZ, 568 pp. [review in Reptilia 86: 84] - get paper here
  • Leavitt, D.H., Marion, A.B., Hollingsworth, B.D., Reeder, T.W. 2017. Multilocus phylogeny of alligator lizards (Elgaria, Anguidae): Testing mtDNA introgression as the source of discordant molecular phylogenetic hypotheses. Molecular Phylogenetics and Evolution - get paper here
  • MacFarlan, S J; Garcia, J J; Schniter, E; Beltran, D G; Bibo, J G A & Ruiz-Campos, G; 2019. Geographic Distribution: Elgaria velazquezi (Central Baja California Alligator Lizard) Mexico: Baja California Sur: Municipality of La Paz. Herpetological Review 50 (1): 102 - get paper here
  • Peralta-García A, Valdez-Villavicencio JH, Fucsko LA, Hollingsworth BD, Johnson JD, Mata-Silva V, Rocha A, DeSantis DL, Porras LW, and Wilson LD. 2023. The herpetofauna of the Baja California Peninsula and its adjacent islands, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 17(1&2): 57–142
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