Xenosaurus rectocollaris

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Cladus: Unidentata, Episquamata, Toxicofera
Subordo: Anguimorpha
Infraordo: Neoanguimorpha

Familia: Xenosauridae
Genus: Xenosaurus
Species: Xenosaurus rectocollaris
Name

Xenosaurus rectocollaris Smith & Iverson, 1993: 55

Holotype: UF 51438, adult ♂.

Type locality: “2.5 Km (1.5 mi) SW Veracruz/Puebla state line, Hy 150 (8Km (4.9 mi) E Chapulco), Puebla, Mexico, 2134 m (7000 ft).”
References
Primary references

Smith, H.M. & Iverson, J.B. 1993. A new species of knobscale lizard (Reptilia: Xenosauridae) from Mexico. Bulletin of the Maryland Herpetological Society 29(2): 51–66. BHL

Links

Uetz, P. & Hallermann, J. 2022. Xenosaurus rectocollaris. The Reptile Database. Accessed on 20 April 2018.
Canseco-Márquez, L. & Flores-Villela, O. 2007. IUCN: Xenosaurus rectocollaris (Least Concern). The IUCN Red List of Threatened Species 2007: e.T64374A12762437. DOI: 10.2305/IUCN.UK.2007.RLTS.T64374A12762437.en

Vernacular names
English: Pallid Knob-scaled Lizard

Xenosaurus rectocollaris, sometimes known as the pallid knob-scaled lizard, is a species of viviparous lizard. It is endemic to Mexico where it is known from the Oaxaca and Puebla states.[1][2] It is a rare species occurring in rock crevices in pristine semi-arid areas.[1]
References

Canseco-Márquez, L.; Flores-Villela, O. (2007). "Xenosaurus rectocollaris". IUCN Red List of Threatened Species. 2007: e.T64374A12762437. doi:10.2305/IUCN.UK.2007.RLTS.T64374A12762437.en.
Xenosaurus rectocollaris at the Reptarium.cz Reptile Database. Accessed 15 March 2017.