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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) 
Subspecies 
Common NamesCentral Peninsular Alligator Lizard 
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) Map legend:
Type locality - Type locality.
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproductionoviparous 
TypesHolotype: SDSNH 68679 
CommentDiagnosis. 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.

Distribution: 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. 
References
  • 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
 
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