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Aspidoscelis scalaris (COPE, 1892)

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Higher TaxaTeiidae, Teiinae, Gymnophthalmoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Rusty-rumped Whiptail
S: Corredora Pinta Occidental 
SynonymCnemidophorus gularis scalaris COPE 1892
Cnemidophorus gularis semifasciatus COPE 1892
Cnemidophorus scalaris — GADOW 1906: 335
Cnemidophorus sackii scalaris — SMITH & TAYLOR 1950: 182
Cnemidophorus octolineatus SCHMIDT & SMITH 1944: 85 (non BAIRD)
Cnemidophorus sackii semifasciatus — SMITH & TAYLOR 1950: 184
Cnemidophorus scalaris scalaris — WEBB 1984
Cnemidophorus gularis scalaris — MASLIN & SECOY 1986
Aspidoscelis gularis scalaris — REEDER et al. 2002
Aspidoscelis scalaris — LINER & CASAS-ANDREU 2008
Aspidoscelis scalaris — LEAVITT in JONES & LOVICH 2009: 378 
DistributionUSA (SW Texas),
Mexico (N/E Chihuahua, Coahuila, Zacatecas)

Type locality: Not specifically designated. either “Mexican Plateau south of Chihuahua” or “City of Chihuahua”. Restricted to Chihuahua, Chihuahua by SMITH & TAYLOR 1950.

semifasciatus: Big bend area or Texas and adjacent Coahuila. Type locality: Agua nueva, Coahuila (fide SMITH & TAYLOR 1950).  
Reproductionoviparous 
TypesLectotype: USNM 14302a; paralectotypes: USNM 8319, 14302.
Holotype: USNM 9248 [semifasciatus] 
Diagnosis 
CommentSynonymy partly after SMITH & TAYLOR 1950. Not listed by CROTHER 2000 for North America. See also discussion in CROTHER 2000 for Cnemidophorus septemvittatus.

Subspecies: LINER & CASAS-ANDREU 2008 listed 6 subspecies of Aspidoscelis gularis, most of which are now included in A. gularis.

Distribution: Not listed for San Luis Potosí by Lemos-Espinal & Dixon 2013, nor Lemos-Espinal et al. 2018 (checklist SLP). Not in Durango fide Lemos-Espinal (2018). 
EtymologyPresumably named after Latin scalaris, of or belonging to a flight of steps or a ladder, in reference to the ladder-like dorsal pattern in at least some specimens. 
References
  • Barley, A. J., Nieto-Montes de Oca, A., Manríquez-Morán, N. L., & Thomson, R. C. 2024. Understanding Species Boundaries that Arise from Complex Histories: Gene Flow Across the Speciation Continuum in the Spotted Whiptail Lizards. Systematic Biology, syae040 - get paper here
  • Cope, E.D. 1892. A synopsis of the species of the teiid genus Cnemidophorus. Trans. Am. Phil. Soc. (ser. 2) 17 (1): 27-52 [1893] - get paper here
  • Cope, E.D. 1892. Color patterns in Cnemidophorus. Am. Nat. 25 [1891]: 1135-1136
  • Crother, B. I. (ed.) 2012. Standard Common and Current Scientific Names for North American Amphibians, Turtles, Reptiles, and Crocodilians, Seventh Edition. Herpetological Circular 39: 1-92
  • Gadow,H. 1906. A contribution to the study of evolution based upon the Mexican species of Cnemidophorus. Proc. Zool. Soc. London 1906: 277-375 (+ maps) - 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, Daniel J. , Stephen R. Goldberg, Charles R. Bursey and Christopher M. Ritzi. 2010. Aspidoscelis scalaris septemvittata: Endoparasites. Herpetological Review 41 (3): 351-352 - get paper here
  • Maslin, T. & Secoy, D.M. 1986. A checklist of the lizard genus Cnemidophorus (Teiidae). Contr. Zool. Univ. Colorado Mus. 1: 1-60
  • REEDER, T.W.; CHARLES J. COLE AND HERBERT C. DESSAUER 2002. Phylogenetic Relationships of Whiptail Lizards of the Genus Cnemidophorus (Squamata: Teiidae): A Test of Monophyly, Reevaluation of Karyotypic Evolution, and Review of Hybrid Origins. American Museum Novitates 3365: 1-64 - get paper here
  • Schmidt, Karl P.; Smith, Tarleton F. 1944. Amphibians and reptiles of the Big Bend region of Texas. Zoological Series of Field Museum of Natural History 29 (5): 75-96 - get paper here
  • Smith, H.M. et al. 1996. Relative priority of names for members of the Eastern and Central Spotted Whiptail lineages of the lizard genus Cnemidophorus in North America. Herpetological Review 27 (3): 129-130 - get paper here
  • Tanner, W.W. 1987. Lizards and turtles of Western Chihuahua. Great Basin Naturalist. 47: 383-421 - get paper here
  • Taylor, Edward H. 1952. Third contribution of the herpetology of the Mexican state of San Luis Potosí. Univ. Kansas Sci. Bull. 34 (13): 793-815 - get paper here
  • Valdez-Lares, R.; R. Muñiz-Martínez; E.Gadsden; G. Aguirre-León; G. Castañeda-Gaytán; R. Gonzalez-Trápaga 2013. Checklist of amphibians and reptiles of the state of Durango, México. Check List 9 (4):714-724 - get paper here
  • WALKER, J. M., J. A. LEMOS-ESPINAL, JAMES E. CORDES, H. L. TAYLOR & H. M. SMITH 2001. Allocation of populations of whiptail lizards to septemvittatus Cope, 1892 (genus Cnemidophorus) in Chihuahua, México, and the scalaris problem. Copeia 2001 (3): 747-765 - get paper here
  • Webb, R.G. 1984. Herpetogeography in the Mazatlán-Durango Region of the Sierra Madre Occidental, Mexico. Vetrebrate Ecology and Systematics - A ribute to Henry S. Fitch; Museum of Natural History, University of Kansas, Lawrence, pp. 217-241
  • Zweifel, Richard G. 1959. Variation in and distribution of lizards of western Mexico related to Cnemidophorus sacki. Bull. Amer. Mus. Nat. Hist. 117 (2): 57-116 - get paper here
  • Zweifel, Richard G. 1961. Relationship of two whiptail lizards (genus Cnemidophorus) in western Mexico. Copeia 1961 (1): 98-103 - get paper here
 
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