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Crotaphytus bicinctores SMITH & TANNER, 1972

IUCN Red List - Crotaphytus bicinctores - Least Concern, LC

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Higher TaxaCrotaphytidae, Iguania, Sauria, Squamata (lizards)
Common NamesE: Mojave Black-collared Lizard, Desert Collared Lizard 
SynonymCrotaphytus collaris bicinctores SMITH & TANNER 1972
Crotaphytus insularis bicinctores—AXTELL 1972
Crotaphytus collaris bicinctores — SMITH & TANNER 1974
Crotaphytus bicinctores — SANBORN & LOOMIS 1979
Crotaphytus insularis bicinctores — MONTANUCCI 1983
Crotaphytus bicinctores — CROTHER 2000
Crotaphytus bicinctores— PIANKA & VITT 2003: 45
Crotaphytus bicinctores — COLLINS & TAGGART 2009
Crotaphytus bicinctores — RYAN in JONES & LOVICH 2009: 100 
DistributionUSA (Colorado, Utah, Arizona, California, Oregon, Nevada)

Type locality: "Mercury Pass, Nevada Test Site, Nye Co.,
TypesHolotype: BYU 23883 (Brigham Young University) 
DiagnosisDiagnosis. Crotaphytus bicinctores which differs from the peninsular lower California form in having: 1) 6 or more (83% of 125) internasals instead of 5 or fewer (92% of 36), 2) 39 or fewer femoral pores (93% of 124) instead of 40 or more (67% of 37), 3) anterior dark collar separated medially by 12 or fewer pale scales (91% of 110) instead of by 13 or more (100% of 37), 4) posterior dark collar separated medially by 12 or fewer pale scales (100% of 101) instead of by 13 or more (97% of 37) and 5) no or only traces of pale transverse lines between the broad, dark, often obscure dorsal trunk crossbands in adults, rather than distinct, broad, dark dorsal bands (often with medial dots and dashes) separated by broken or continuous transverse lines [from AXTELL 1972].
CommentMontanucci (1983) downgraded Crotaphytus bicinctores to C. insularis bicinctores but other revalidated it. Illustrated on the cover of Iguana Rundschreiben 17 (1), 2004.

Illustration: cover of Iguana Rundschreiben 2 (1) [2011]. 
EtymologyFrom the Latin bi, two, and cinct, banded or girdled, in reference to "the divided banding (presumably of the collar) in the Great Basin populations" (fide Tanner, personal communication, 1993, cited in McGuire 1996: 72). 
  • Alexander, Brad, Richard E. Staub and Robert W. Hansen. 2016. Crotaphytus bicinctores (Great Basin Collared Lizard) Maximum elevation. Herpetological Review 47 (2): 296-297 - get paper here
  • Axtell, R.W. 1972. Hybridization between Western Collared Lizards with a Proposed Taxonomic Rearrangement. Copeia 1972 (4): 707-727 - get paper here
  • Collins, J.T. and T. W. Taggart 2009. Standard Common and Current Scientific Names for North American Amphibians, Turtles, Reptiles, and Crocodilians, Sixth Edition. Center for North American Herpetology, 48 pp.
  • 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
  • Hollingsworth, Bradford D.; Gergus, Erik W. A. 1997. Geographic Distribution. Crotaphytus bicinctores. Herpetological Review 28 (1): 49-50 - get paper here
  • Jones, L.L. & Lovich, R.E. 2009. Lizards of the American Southwest. A photographic field guide. Rio Nuevo Publishers, Tucson, AZ, 568 pp. [review in Reptilia 86: 84] - get paper here
  • Lipfert, J. 2004. Halsbandleguane (die Gattung Crotaphytus). Natur und Tier Verlag (Münster), 64 pp. - get paper here
  • Montanucci, R. R. 1983. Natural Hybridization between Two Species of Collared Lizards (Crotaphytus). Copeia 1983 (1): 1-11 - get paper here
  • Mosauer, Walter 1936. The reptilian fauna of sand dune areas of Vizcaino Desert and of northwestern Lower California. Occasional Papers of the Museum of Zoology, University of Michigan (329): 1-21 - get paper here
  • Pianka, E.R. & Vitt, L.J. 2003. Lizards - Windows to the Evolution of Diversity. University of California Press, Berkeley, 347 pp. [review in Copeia 2004: 955] - get paper here
  • Sanborn, S.R., and R.B. Loomis 1979. Systematics and behavior of collared lizards (Crotaphytus, Iguanidae) in southern California. Herpetologica 35 (2): 101-116 - get paper here
  • Shedd, Jackson D. and Jack Goldfarb. 2013. Geographic Distribution: Crotaphytus bicinctores (Great Basin collared lizard). Herpetological Review 44 (2): 273 - get paper here
  • Smith, N.M. & W.W. Tanner. 1974. A taxonomic study of the western collared lizards, Crotaphytus collaris and Crotaphytus insularis. Brigham Young University Science Bulletin 19: iv, 1-29. - get paper here
  • Smith, N.M. and Tanner,W.W. 1972. Two new subspecies of Crotaphytus (Sauria: Iguanidae). Great Basin Naturalist. 32: 25-34 - get paper here
  • Stebbins,R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston
  • Van Denburgh,J. and Slevin,J.R. 1921. A list of the amphibians and reptiles of Nevada, with notes on the species in the collection of the academy. Proc. Cal. Acad. Sci. (4) 11 (2): 27-38 - get paper here
  • Werning, Heiko 2012. Die Reptilien und Amphibien des Südwestens. Draco 13 (50): 18-60 - get paper here
  • Werning, Heiko 2014. Leguane im „Wilden Westen“. Terraria-Elaphe 2014 (2): 16-25 - get paper here
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