| Diagnosis | Diagnosis: “A member of the genus Xenosaurus with nuchal collar straight across middle of neck, not V-shaped: venter without dark markings; light areas between dorsal dark bands whitish, tips of tubercles brownish; lateral fold whitish; a pair of squarish dark marks posterior to occiput; a single, large, bulbous postrostral, wider than long; zygomatic and postorbital ridges in contact through most or all of their parallel length; one row of moderately large supraoculo-orbitals; labiomental row extending forward to 1st chinshield and infralabial; maximum number of scales in a transverse row of scales on venter 25-29; lamellae on 4th toe 19-23; most temporal tubercles contacting each other, no more than a few posterior tubercles separated by one row of granules; tubercles in paravertebral TOWS elongate, flat, slightly larger than lateral tubercles, separated anteroposteriorly from each other by one or two rows of granules; paravertebral re . separated from each other by a distance varying from 2-3 times the length of their tubercles; lateral tubercles of abdomen separated from each other by their own diameter, little more or less; dorsal foreleg and hind leg tubercles mostly in contact with each other, at most one row of granules between them; caudal dark bars solid black above, longer than light tan interspaces, but weakly split and narrower than light interspaces below.” (Smith & Iverson 1993)
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| References |
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- Bhullar, B-A. S. 2011. The Power and Utility Of Morphological Characters In Systematics: A Fully Resolved Phylogeny of Xenosaurus and Its Fossil Relatives (Squamata: Anguimorpha). Bull. Mus. Comp. Zool. Harvard 160 (3): 65–181 - get paper here
- Canseco-Márquez, L., & Gutiérrrez-Mayén, M.G. 2010. Anfibios y reptiles del Valle de Tehuacán-Cuicatlán. Comisión Nacional para el conocimiento y uso de la biodiversidad, México D.F., Mexico, 302 pp - get paper here
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- Lemos-Espinal, Julio;Smith, Geoffrey R.;Ballinger, Royce E. 1996. Natural history of the Mexican knob-scaled lizard, Xenosaurus rectocollaris. Herpetological Natural History 4 (2): 151-154
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- Torres-Hernández, LA, Ramírez-Bautista A, Cruz-Elizalde R, Hernández-Salinas U, Berriozabal-Islas C, DeSantis DL, Johnson JD, Rocha A, García-Padilla E, Mata-Silva V, Fucsko LA, and Wilson LD. 2021. The herpetofauna of Veracruz, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 15(2) [General Section]: 72–155 - get paper here
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