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) |
References |
- Augstenová, Barbora, Eleonora Pensabene, Lukáš Kratochvíl, and Michail Rovatsos. 2021. Cytogenetic Evidence for Sex Chromosomes and Karyotype Evolution in Anguimorphan Lizards. Cells 10, no. 7: 1612 - get paper here
- 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
- Canseco-Marquez,L.; Gutierrez-Mayen,G. & Salazar-Arenas,J. 2000. New records and range extensions for amphibians and reptiles from Puebla, México. Herpetological Review 31 (4): 259-263 - get paper here
- Lemos-Espinal, J.A., G.R. Smith, and R.E. Ballinger 2000. Xenosaurus rectocollaris Smith and Iverson Pallid Knob-scaled Lizard. Catalogue of American Amphibians and Reptiles (716): 1 - get paper here
- 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
- Mata-Silva, Vicente, Jerry D. Johnson, Larry David Wilson and Elí García-Padilla. 2015. The herpetofauna of Oaxaca, Mexico: composition, physiographic distribution, and conservation status. Mesoamerican Herpetology 2 (1): 6–62 - get paper here
- Nieto-Montes de Oca, Adrián; Anthony J. Barley, Rubi N. Meza-Lázaro, Uri O. García-Vázquez, Joan G. Zamora-Abrego, Robert C. Thomson, Adam D. Leaché 2016. Phylogenomics and species delimitation in the knob-scaled lizards of the genus Xenosaurus (Squamata: Xenosauridae) using ddRADseq data reveal a substantial underestimation of diversity. Molecular Phylogenetics and Evolution 106: 241-253 - get paper here
- Nieto-Montes de Oca, Adrián; Nicté Castresana-Villanueva, Luis Canseco-Márquez & Jonathan A. Campbell 2022. A New Species of Xenosaurus (Squamata: Xenosauridae) from the Sierra de Juárez of Oaxaca, Mexico Herpetologica 78(1): 40–50. - get paper here
- Nieto-Montes de Oca, Adrián; Uri O. García-Vázquez, J. Jaime Zúñiga-Vega and Walter Schmidt-Ballardo 2013. A new species of Xenosaurus (Squamata: Xenosauridae) from the Sierra Gorda Biosphere Reserve of Querétaro, Mexico. Revista Mexicana de Biodiversidad 84: 485-498 - get paper here
- Pérez Ramos, Edmundo; Lucia Saldaña de la Riva; Jonathan A. Campbell 2000. A new allopatric species of Xenosaurus (Squamata: Xenosauridae) from Guerrero, Mexico. Herpetologica 56 (4): 500-506 - get paper here
- Smith H M; Iverson J B 1993. A new species of knobscale lizard (Reptilia: Xenosauridae) from Mexico. Bull. Maryland Herp. Soc. 29 (2): 51-66 - get paper here
- 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
- Woolrich-Piña, G. A., E. García-Padilla, D. L. DeSantis, J. D. Johnson, V. Mata-Silva, and L. D. Wilson 2017. The herpetofauna of Puebla, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 4(4): 791–884 - get paper here
- Woolrich-Piña, Guillermo A. and Geoffrey R. Smith 2012. A New Species of Xenosaurus from the Sierra Madre Oriental, Mexico. Herpetologica 68 (4): 551-559. - get paper here
- Woolrich-Piña, Guillermo A., Julio A. Lemos-Espinal, Geoffrey R. Smith, Juan Pablo Ramírez-Silva and Luis Oliver-López. 2014. Male and female reproductive cycles of Xenosaurus rectocollaris (Squamata: Xenosauridae) from the Tehuacan Valley, Puebla, Mexico. Herpetology Notes 7: 313-317 - get paper here
- Woolrich-Piña, Guillermo A; Julio A Lemos-Espinal, Luis Oliver-López, and Geoffrey R Smith 2012. Ecology of Xenosaurus rectocollaris in Tehuacan Valley, Puebla, Mexico. Southwestern Naturalist 57 (2): 157-161. - get paper here
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