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Xantusia vigilis BAIRD, 1859

IUCN Red List - Xantusia vigilis - Least Concern, LC

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Higher TaxaXantusiidae, Sauria (lizards) 
Subspecies 
Common NamesDesert Night Lizard
sierrae: Sierra Night Lizard
utahensis: Utah Night Lizard
vigilis: Desert Night Lizard 
SynonymXantusia vigilis BAIRD 1859: 255
Xantusia vigilis — BOULENGER 1885: 327
Xantusia vigilis — SMITH & TAYLOR 1950: 154
Xantusia vigilis utahensis TANNER 1957
Xantusia vigilis — SAVAGE 1963: 35
Xantusia vigilis utahensis — BEZY 1982
Xantusia vigilis — STEBBINS 1985: 143
Xantusia vigilis — LINER 1994
Xantusia vigilis — SINCLAIR et al. 2004 
DistributionUSA (S California, S Nevada, S Utah, W/C Arizona, S Utah),
Mexico (W Sonora, Baja California Norte)

Type locality: Fort Tejon, California. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
TypesSyntypes: USNM 3063
Holotype: CAS 401 [gilberti] 
CommentType species: Xantusia vigilis is the type species of the genus Xantusia BAIRD 1859.

Subspecies: SINCLAIR et al. (2004) did not recognize X. vi. utahensis and considered several taxa as “candidate species” (indicated in their paper and above by single quotes). For their arizonae, wigginsi and extorris, however, it remains unclear if they are morphologically diagnosable while ‘sierrae’ is. However, mtDNA haplotypes of sierrae nested within vigilis and is thus the most closely related form. Noonan et al. did not recognize any subspecies.

Xantusia vigilis arizonae KLAUBER 1931 and Xantusia vigilis wigginsi SAVAGE 1952 have been elevated to species level based on recognition by multiple authors.

Habitat: rocks and decomposing plants.

Diagnosis. Readily distinguishable from the other subspecies by: (1) ventrals usually in less than 29 transverse rows, 25 (27.4) 29; (2) dorsal blotches formed by fusion of several dark spots; a second colorphase uniformly grayish-brown with no evidence of spots on dorsum or tail; (3) tail spots occupy whole scale,either arranged to form lines or completely lacking (from SAVAGE 1952). 
EtymologyEtymology: Named after John Xantus a.k.a Louis deVesey (1825-1894), Hungarian-born naturalist who arrived in the US in 1850 and then had various jobs. 
References
  • Baird,S.F. 1859. Description of new genera and species of North American lizards in the museum of the Smithsonian Institution. Proc. Acad. Nat. Sci. Philadelphia 1858: 253-256 - get paper here
  • Baker, Rollin H.; Baker, Mary W.; Johnson, Jerry D.; Webb, Robert G. 1981. New records of mammals and reptiles from Northwestern Zacatecas, Mexico. Southwestern Naturalist 25(4):568-569 - get paper here
  • Bartholomew, Breck 1992. Utah night lizard, Xantusia vigilis utahensis, Tanner Intermontanus 1 (2): 3
  • Bezy, R L 1982. Xantusia vigilis Baird. Desert night lizard. Catalogue of American Amphibians and Reptiles No. 302: 1-4 - get paper here
  • Bezy, Robert L. 1967. A new night lizard (Xantusia vigilis sierrae) from the southern Sireea Nevada in California. Journal of the Arizona Academy of Science 4 (3): 163-167 - get paper here
  • Bezy, Robert L. and Oscar Flores Villela. 1999. A new species of Xantusia (Squamata: Xantusiidae) from Zacatecas, Mexico. Herpetologica 55 (2): 174-184. - get paper here
  • Bezy,R.L. 1967. Variation, distribution, and taxonomic status of the Arizona night lizard (Xantusia arizonae). Copeia 1967 (3): 653-661 - get paper here
  • Bezy,R.L. & SItes, J.W. 1987. A preliminary study of allozyme evolution in the lizard family Xantusiidae. Herpetologica 43: 281-289 - get paper here
  • Boulenger, G.A. 1885. Catalogue of the lizards in the British Museum (Natural History). Vol. 2, Second edition. London, xiii+497 pp. - get paper here
  • Burt, Charles E. 1933. Some lizards from the Great Basin of the West and adjacent areas, with comments on the status of various forms American Midland Naturalist 14: 228-250 - get paper here
  • 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
  • Deacon, James E.; W. Glen Bradley and Kenneth S. Moor 1966. Habitat of the Lizard Xantusia Vigilis in Southern Nevada. Southwestern Naturalist 11 (1): 126-128 - get paper here
  • Dunn, E. R.;Dunn, M. T. 1940. Generic names proposed in herpetology by E. D. Cope Copeia 1940 (2): 69-76 - get paper here
  • Jones, K.B.; Abbas, D.R. & Bergstedt, T. 1981. Herpetological records from Central and Northeastern Arizona. Herpetological Review 12 (1): 16 - get paper here
  • Klauber, Laurence M. 1931. A new species of Xantusia from Arizona, with a synopsis of the genus. Transactions of the San Diego Society of Natural History 7 (1): 1-16 - get paper here
  • Klauber, Laurence M. 1938. Notes from a herpetological diary, I Copeia 1938 (4): 191-197 - get paper here
  • Klauber, Laurence M. 1940. Notes from a herpetological diary, II. Copeia 1940 (1): 15-18 - get paper here
  • Morafka, David J.;Banta, Benjamin H. 1968. The addition of Xantusia vigilis (Reptilia: Lacertilia) to the known herpetofauna of Monterey County, California, with some ecological observations Wasmann Journal of Biology 26 (1): 151-153
  • Morafka, David J.;Banta, Benjamin H. 1973. The distribution and microhabitat of Xantusia vigilis (Reptilia: Lacertilia) in the Pinnacles National Monument, San Benito and Monterrey Counties, California Journal of Herpetology 7 (2): 97-108 - get paper here
  • Noonan, Brice P.; Jennifer B. Pramuk, Robert L. Bezy, Elizabeth A. Sinclair, Kevin de Queiroz, Jack 2013. Phylogenetic relationships within the lizard clade Xantusiidae: Using trees and divergence times to address evolutionary questions at multiple levels Molecular Phylogenetics and Evolution, Volume 69, Issue 1, October 2013, Pages 109–122 - get paper here
  • Papenfuss, T. J., Macey, J.R. & Schulte II, J.A. 2001. A new lizard in the genus Xantusia from Arizona. Scientific Papers of the Natural History Museum, University of Kansas (23): 1-9
  • Ponce-Campos, P.; Huerta Ortega, S.M.; Noguiera González, C. & Smith, H.M. 2001. Natural history notes on the Southern Plateau Night Lizard, Xantusia sanchezi. Bull. Maryland Herp. Soc. 37 (1): 18-21
  • Savage, Jay M. 1952. Studies on the lizard family Xantusidae I. The systematic status of the Baja California Night Lizards allied to Xantusia vigilis, with the description of a new subspecies American Midland Naturalist 48 (2): 467-479 - get paper here
  • Savage, Jay M. 1963. Studies on the lizard family Xantusidae IV. The Genera. Contributions in Science, Los Angeles (71): 1-38
  • Sinclair, Elizabeth A.; Robert L. Bezy; Kathryn Bolles; Jose L. Camarillo R.; Keith A. Crandall and 2004. Testing Species Boundaries in an Ancient Species Complex with Deep Phylogeographic History: Genus Xantusia (Squamata: Xantusiidae). American Naturalist 164 (3): 396-414 - get paper here
  • Slevin, Joseph R. 1949. Range extension of Xantusia vigilis Herpetologica 5: 148 - get paper here
  • Stebbins, Robert F. 1948. New distributional records for Xantusia vigilis with observations on its habitat American Midland Naturalist 39 (1): 96-101 - get paper here
  • Stebbins,R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston
  • Stejneger,L.H. 1893. Annotated list of the reptiles and batrachians collected by the Death Valley Expedition in 1891, with descriptions of new species. North American Fauna, No. 7: 159-228 (+ 14 plates + 4 maps) - get paper here
  • Storey, Margaret 1940. Xantusia vigilis in Utah and Nevada. Copeia 1940 (2): 135 - get paper here
  • Tanner, Wilmer W. 1957. A new Xantusia from southeastern Utah. Herpetologica 13 (1): 5-11 - get paper here
  • Tanner, Wilmer W. 1958. Herpetological range extensions Herpetologica 14: 195-196 - get paper here
  • Turner, Frederick B. 1959. Xantusia v. vigilis in Death Valley National Monument, California Copeia 1959 (2): 172-173 - get paper here
  • Turner, Frederick B.;Wauer, Roland H. 1963. A survey of the herpetofauna of the Death Valley area. Great Basin Naturalist 23 (3-4): 119-128 - get paper here
  • Van Denburgh,J. 1895. A review of the herpetology of Lower California. Part I - Reptiles. Proc. Cal. Acad. Sci. (2) 5: 77-163 - get paper here
  • Vicario, Saverio; Adalgisa Caccone and Jacques Gauthier 2003. Xantusiid "night" lizards: a puzzling phylogenetic problem revisited using likelihood-based Bayesian methods on mtDNA sequences. Molecular Phylogenetics and Evolution 26 (2): 243-261 - get paper here
  • Webb, Robert G. 1965. A new night lizard (genus Xantusia) from Durango, Mexico American Museum Novitates (2231): 1-16 - get paper here
  • Zweifel, R. G.;Lowe, C. H. 1966. The ecology of a population of Xantusia vigilis, the desert night lizard American Museum Novitates 2247: 1-57 - get paper here
 
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