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Aspidoscelis angusticeps (COPE, 1878)

IUCN Red List - Aspidoscelis angusticeps - Least Concern, LC

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Higher TaxaTeiidae, Teiinae, Gymnophthalmoidea, Sauria, Squamata (lizards)
SubspeciesAspidoscelis angusticeps petenensis (BEARGIE & MCCOY 1964)
Aspidoscelis angusticeps angusticeps (COPE 1877) 
Common NamesE: Yucatan Whiptail
S: Cuiji Yucateco 
SynonymCnemidophorus angusticeps COPE 1878: 95
Cnemidophorus sackii angusticeps — SMITH & TAYLOR 1950: 183
Cnemidophorus angusticeps — STUART 1963
Cnemidophorus angusticeps — PETERS et al. 1970: 92
Cnemidophorus angusticeps — LINER 1994
Cnemidophorus angusticeps — KÖHLER 2000: 100
Aspidoscelis angusticeps — REEDER et al. 2002

Aspidoscelis angusticeps angusticeps (COPE 1877)
Cnemidophorus angusticeps COPE 1878: 95
Cnemidophorus angusticeps angusticeps — MASLIN & SECOY 1986
Aspidoscelis angusticeps angusticeps — REEDER et al. 2002
Aspidoscelis angusticeps angusticeps — LINER & CASAS-ANDREU 2008

Aspidoscelis angusticeps petenensis (BEARGIE & MCCOY 1964)
Cnemidophorus angusticeps petenensis BEARGIE & MCCOY 1964: 565
Cnemidophorus angusticeps petenensis — KLUGE 1984
Cnemidophorus angusticeps petenensis — MASLIN & SECOY 1986
Aspidoscelis angusticeps petenensis — REEDER et al. 2002
Aspidoscelis angusticeps petenensis — LINER & CASAS-ANDREU 2008 
DistributionMexico (Yucatán, Quintana Roo, Campeche), Guatemala, Belize

angusticeps: N Yucatán

petenensis: Basis of the Yucatán peninsula. Type locality: Guatemala, El Petén, La Libertad.

Type locality: “Yucatán”. Restricted to Chichen Itzá by SMITH & TAYLOR 1950.  
TypesSyntypes: USNM 24876-24878
Holotype: UMMZ 74980 [petenensis] 
DiagnosisDescription: Four supraocular scales (the posterior scale is smaller than the preceding three or about the size of the anterior scale in the series). The interparietal is usually single and there are two parietals and two frontoparietal scales, producing a total of five scales in the parietal region. There are multiple rows of enlarged upper antebrachials. The dorsum and sides of the body are covered with tiny granular scales and the venter with large, flat rectangular scales, usually arranged in eight longitudinal rows. The median gulars are not distinctly enlarged over surrounding gular scales. There are two complete transverse gular folds with the mesoptychials only slightly enlarged and grading into adjacent anterior scales (from Campbell 1999: 174).

Coloration: Six well-defined cream stripes are present on the back and sides in juveniles and adult females. These stripes are also present in young males, but as males mature small spots appear between the stripes. These spots continue to enlarge with age until they eventually coalesce to form a lichenose or tessellated pattern in large males. The paravertebral and dorsolateral stripes extend to a level about even with the posterior insertion of the hind limbs; the lateral stripes extend only to about the level of the anterior insertion of the hind limbs. Adult males have a broad median dorsal band extending from the parietals to the base of the tail; this vertebral band is only vaguely present in the larger females. In juveniles, females, and young males, the area between stripes is immaculate brownish black, except for the dark zone between the lower two stripes, which may be somewhat tessellated, at least posteriorly. In adult males, the chin and gular area are pink, and the belly is black or bluish black from the gular fold to the preanal scales; black pigment extends onto the ventral surfaces of the fore- and hind limbs. The venters of subadult males are less extensively blackened than in mature males, and the posterior ventrals, preanal scales, and ventral sur-
faces of the hind limbs may be cream. In females and juveniles the venter is pale blue laterally, becoming cream or pale gray near the ventral midline; the throat is blue, suffused with cream, and the preanal scales and ventral surfaces of the limbs and tail are also cream. Dorsally, the tail is orange or reddish brown in juveniles and sub-adults and becomes brownish or blue-gray in adults; the tail is white or pale gray ventrally (from Campbell 1999: 174). 
EtymologyNamed after Latin “angustus, -a, -um” = narrow and the abbreviated term “-ceps” for “caput” = head. 
  • Aguilar-López JL, Luría-Manzano R, Pineda E, Canseco-Márquez L 2021. Selva Zoque, Mexico: an important Mesoamerican tropical region for reptile species diversity and conservation. ZooKeys 1054: 127-153 - get paper here
  • Beargie, K. & McCoy, C.J. 1964. Variation and relationships of the teiid lizard Cnemidophorus angusticeps. Copeia 1964 (3): 561-570 - get paper here
  • Campbell, J.A. 1998. Amphibians and reptiles of northern Guatemala, the Yucatán, and Belize. Norman: University of Oklahoma Press, xiii + 380 pp. - get paper here
  • Colston, Timothy J.; José António L. Barão-Nóbrega, Ryan Manders, Alice Lett, Jamie Wilmott, Gavin Cameron, Sidony Hunter, Adam Radage, Etienne Littlefair, Robert J. Williams, Antonio Lopez Cen, Kathy Slater 2015. Amphibians and reptiles of the Calakmul Biosphere Reserve, México, with new records. Check List 11 (5): 1759 - get paper here
  • Cope, E.D. 1878. Tenth contribution to the herpetology of Tropical America. Proc. Amer. Philos. Soc. 17: 85-98 [1877] - get paper here
  • Duellman, W. E., & ZWEIFEL, R. G. 1962. A synopsis of the lizards of the sexlineatus group (genus Cnemidophorus). Bull. Amer. Mus. Nat. Hist. 123: 155-210. - get paper here
  • Köhler, G. 2000. Reptilien und Amphibien Mittelamerikas, Bd 1: Krokodile, Schildkröten, Echsen. Herpeton Verlag, Offenbach, 158 pp.
  • Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp.
  • Koller, Rene 2005. Herpetologoische waarnemingen in Belize, deel 2: reptielen. Lacerta 63 (1): 4-19 - get paper here
  • Lee, J. C. 2000. A field guide to the amphibians and reptiles of the Maya world. Cornell University Press, Ithaca,
  • Lee, J.C. 1996. The amphibians and reptiles of the Yucatán Peninsula. Comstock, Cornell University Press, Ithaca, 500 pp.
  • Manríquez-Morán, Norma L., Fausto R. Méndez-de la Cruz, and Robert W. Murphy 2014. Genetic Variation and Origin of Parthenogenesis in the Aspidoscelis cozumela Complex: Evidence from Mitochondrial Genes. Zoological Science 31, No. 1: 14-19. - 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
  • Moritz, Craig C.; Wright, John W.; Singh, V.; Brown, Wesley M. 1992. Mitochondrial DNA analysis and the origin and relative age of parthenogenetic Cnemidophorus. V. The cozumelae species group. Herpetologica 48 (4): 417-424
  • Nahuat-Cervera, Pedro Enrique 2020. Amphibians and reptiles of the Hobonil Educative Center, Tzucacab, Yucatán, Mexico. Rev. Latinoamer. Herp. 3 (1): 53-65 - get paper here
  • 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
  • Smith, H.M. & Taylor,E.H. 1950. An annotated checklist and key to the reptiles of Mexico exclusive of the snakes. Bull. US Natl. Mus. 199: 1-253 - get paper here
  • Smith, Hobart M. 1939. Notes on Mexican reptiles and amphibians. Zoological Series of Field Museum of Natural History 24 (4): 15-35 - get paper here
  • Stuart, L.C. 1963. A checklist of the herpetofauna of Guatemala. Misc. Publ. Mus. Zool., Univ. Michigan (No. 122): 1-150 - get paper here
  • Taylor, Harry L.; Charles J. Cole, and Christopher R. Cooley 2014. Origins and Evolution in the Aspidoscelis cozumela Complex of Parthenogenetic Teiid Lizards: Morphological and Karyotypic Evidence and Paradoxes. Journal of Herpetology Sep 2014, Vol. 48, No. 3: 343-354. - get paper here
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