You are here » home advanced search search results Crotaphytus collaris

Crotaphytus collaris (SAY, 1822)

IUCN Red List - Crotaphytus collaris - Least Concern, LC

Can you confirm these amateur observations of Crotaphytus collaris?

Add your own observation of
Crotaphytus collaris »

Find more photos by Google images search: Google images

Higher TaxaCrotaphytidae, Iguania, Sauria, Squamata (lizards)
SubspeciesCrotaphytus collaris auriceps FITCH & TANNER 1951
Crotaphytus collaris collaris (SAY 1823)
Crotaphytus collaris baileyi STEJNEGER 1890
Crotaphytus collaris fuscus INGRAM & TANNER 1971
Crotaphytus collaris melanomaculatus AXTELL & WEBB 1995 
Common NamesE: Collared Lizard
G: Halsband Leguan (auriceps: Goldkopf-Halsbandleguan)
S: Cachorón de Collar 
SynonymAgama collaris SAY in JAMES 1822: 252
Crotaphytus collaris — HOLBROOK 1842
Leiosaurus collaris — DUMÉRIL 1856: 532
Crotaphytus collaris — BOULENGER 1885: 203
Crotaphytus collaris — COPE 1900
Crotaphytus dickersonae SCHMIDT 1922 (fide SMITH & TAYLOR 1950)
Crotaphytus collaris collaris — SMITH 1946
Crotaphytus dickersonae — SMITH & TAYLOR 1950: 93
Crotaphytus collaris — STEBBINS 1985: 120
Crotaphytus collaris — CONANT & COLLINS 1991: 96
Crotaphytus collaris — LINER 1994
Crotaphytus collaris — COLLINS & TAGGART 2009
Crotaphytus collaris — HEIMES 2022

Crotaphytus collaris auriceps FITCH & TANNER 1951
Crotaphytus collaris auriceps — SMITH & TANNER 1974
Crotaphytus collaris dickersonae (MONTANUCCI, AXTELL & DESSAUER 1975)
Crotaphytus collaris auriceps — STEBBINS 1985: 120
Crotaphytus dickersonae — PIANKA & VITT 2003: 162
Crotaphytus collaris auriceps — MERKER et al. 2004

Crotaphytus collaris baileyi STEJNEGER 1890
Crotaphytus baileyi STEJNEGER 1890: 103 (fide COPE 1898: 250)
Crotaphytus baileyi STEJNEGER 1893: 165
Crotaphytes collaris baileyi — STONE & REHN 1903: 30
Crotaphytes collaris baileyi — ORTENBURGER & ORTENBURGER 1927
Crotaphytus collaris baileyi — TAYLOR 1938: 480
Crotaphytus collaris baileyi — KLAUBER 1939
Crotaphytus collaris baileyi — SCHMIDT & OWENS 1944
Crotaphytus collaris baileyi — SMITH 1946
Crotaphytus collaris baileyi — JAMESON & FLURY 1949
Crotaphytus collaris baileyi — WILLIAMS et al. 1960
Crotaphytus collaris baileyi — BANTA 1962
Crotaphytus collaris baileyi — SMITH & HOLLAND 1971
Crotaphytus collaris baileyi — SMITH & TANNER 1974
Crotaphytus collaris baileyi — MONTANUCCI et al. 1975
Crotaphytus collaris baileyi — LINER et al. 1993
Crotaphytus collaris baileyi — LAZCANO-VILLAREAL & DIXON 2002

Crotaphytus collaris fuscus INGRAM & TANNER 1971
Crotaphytus collaris fuscus — SMITH & TANNER 1974
Crotaphytus collaris fuscus — TANNER 1987
Crotaphytus collaris fuscus — MERKER et al. 2004

Crotaphytus collaris melanomaculatus AXTELL & WEBB 1995
Crotaphytus collaris melanomaculatus — LEMOS-ESPINAL et al. 2018 
DistributionUSA (Arizona, Nevada, SE Utah, S Colorado, New Mexico, Texas, Oklahoma, Kansas, Missouri, Illinois, Arkansas),
Mexico (Baja California, Sonora, Chihuahua, N Durango, Coahuila, N Zacatecas, Nuevo Leon; W Louisiana)

auriceps: E Utah, NW Colorado; Type locality: "3 1/2 mi. NNE Dewey, west side of the Colorado River, Grand County, Utah".

baileyi: USA (New Mexico, Utah, Texas), Mexico (Coahuila); Type locality: "Painted Desert, Little Colorado River, Arizona"

collaris: Texas

fuscus: USA (New Mexico, W Texas); Mexico (Chihuahua); Type locality: "6.5 mi. N and 1.5 mi. W of Chihuahua City, Chihuahua, Mexico".

melanomaculatus: Mexico (NE Durango, Coahuila, N Zacatecas, S Nuevo Leon, San Luis Potosi, SW Tamaulipas). Type locality: 3.8 km S, 1.7 km E Graseros on the highway to Presa Francisco Zarca, el 1250 m, Durango, Mexico (25 14′ 10″N, 103 47′W)  
Reproductionoviparous. There may be temperature-dependent sex determination (TSD) or temperature-dependent survival rates in both sexes (Santoyo-Brito et al. 2017). 
TypesHolotype: lost, originally ANSP
Holotype: KU 29934, paratype: BYU [auriceps]
Holotype: USNM 15821 [baileyi]
Holotype: BYU 16970 [fuscus]
Holotype: UTEP 15915 [melanomaculatus]
Holotype: Los Angeles Co. Mus. No. 126617 [nebrius] 
DiagnosisDiagnosis: Crotaphytus collaris may be distinguished from all other species of Crotaphytus by the absence of dark brown or black pigmentation in the gular fold (= ventrally complete anterior collar) of adult males. It may be further distinguished from C. reticulatus and C. antiquus by the absence of a reticulate dorsal pattern in adults of both sexes and from C. reticulatus by the absence of jet black femoral pores in males. It may be further distinguished from C. dickersonae, C. grismeri, C. bicinctores, C. vestigium, and C. insularis by the absence in adult males of enlarged dark brown or black inguinal patches, a laterally compressed tail, a white or pale tan dorsal caudal stripe, and a pale tan or off-white patternless region on the dorsal surface of the head. It may be further distinguished from C.grismeri, C. bicincfores, C. vesfigium,and C. insularis by the presence of black oral melanin (McGuire 1996: 76). 
CommentSubspecies: COLLINS & TAGGART 2009 do not distinguish any subspecies in North America. However, they (and other authors) consider all or some former subspecies either as synonyms of collaris or as full species. The AMNH checklist does not recognize any subspecies either (see link).

Synonymy: Montanucci et al. (1975) synonymized C. c. auriceps with C. c. baileyi. However, a number of authors continue to recognize auriceps. Cope 1900 synonymized baileyi with collaris as did other subsequent authors. Crotaphytus collaris baileyi hybridizes with C. (insularis) bicinctores but hybrids appear to have lower fitness (Montanucci 1983).

Type species: Agama collaris SAY 1823 is the type species of the genus Crotaphytus HOLBROOK 1842.

McGuire 1996 does not diagnose Crotaphytus moprhologically but only “defines” it as being “the clade stemming from the most recent common ancestor of Crotaphytus collaris and all species that are more closely related to that species than to Gambelia.” 
EtymologyThe species is named after the Latin word collaris meaning collar (Lemos-Espinal & Dixon 2013).

The generic name is derived from the Greek words krotaphos, meaning “side of head” and phyton, meaning "creature," applied in reference to then enlarged muscles on the posterior of the head.

Crotaphytus dickersonae was named after Mary Cynthia Dickerson (1866-1923), former curator of Ichthyology and Herpetology at the American Museum of Natural History (1909-1921). 
  • Abraham, G. 1983. Das Portrait: Crotaphytus collaris - Halsbandleguan. Sauria 5 (1): 1-2 - get paper here
  • Angert, A.L., D. Hutchison, D. Glossip & J.B. Losos 2002. Microhabitat Use and Thermal Biology of the Collared Lizard (Crotaphytus collaris collaris) and the Fence Lizard (Sceloporus undulatus hyacinthinus) in Missouri Glades Journal of Herpetology 36 (1): 23-29. - get paper here
  • Axtell, R.W. & WEBB,R.G. 1995. Two new Crotaphytus from Southern Coahuila and the adjacent states of east-central Mexico. Bull. Chicago Acad. Sc. 16 (2): 1-15
  • Baird, T.A. 2004. Reproductive coloration in female Collared Lizards, Crotaphytus collaris, stimulates courtship by males. Herpetologica 60 (3): 337-348 - get paper here
  • Baird, T.A., M.A. Acree & C.L. Sloan 1996. Age and gender-related differences in the social behaviour and mating success of free-living collared lizards, Crotaphytus collaris Copeia 1996 (2): 336-347. - get paper here
  • Baird, Troy A 2018. Live fast and prosper: early territory defence is not costly in male collared lizards (Crotaphytus collaris). Biological Journal of the Linnean Society, 123 (3): 628–635, - get paper here
  • Baird, Troy A. 2009. Does Experimentally Induced Conspicuous Coloration Increase Risk of Predation and Conspecific Aggression in First-Year Collared Lizard Males? Herpetologica 65 (1): 31-38 - get paper here
  • BAIRD, TROY A.; WAYNE D. LORD, SKYE WARDELL-VILLARREAL & JESSICA T. NEUZIL. 2021. CROTAPHYTUS COLLARIS (Eastern Collared Lizard). ANT BITE CAUSES PARTIAL CAUDAL LOSS. Herpetological Review 52 (2): 404–405. - get paper here
  • Ballinger, R.E. & T.G. Hipp 1985. Reproduction in the Collared Lizard, Crotaphytus collaris, in West Central Texas Copeia 1985 (4): 976-980. - get paper here
  • Ballinger, R.E. & T.G. Hipp 1985. Hematological Variations in the Collared Lizard, Crotaphytus collaris (Sauria: Iguanidae) Copeia 1985 (3): 782-784. - get paper here
  • Banta, Benjamin H. 1962. Preliminary remarks upon the zoogeography of the lizards inhabiting the Great Basin of the western United States. Wasmann Journal of Biology 20 (2): 253-287 - get paper here
  • Bartlett, R. D. & Bartlett, P. 1999. A Field Guide to Texas Reptiles and Amphibians. Gulf Publishing Co., Houston, Texas, 331 pp.
  • Bezy, Robert L. and Charles J. Cole 2014. Amphibians and Reptiles of the Madrean Archipelago of Arizona and New Mexico. American Museum Novitates (3810): 1-24 - get paper here
  • Blackburn, D.G. 1994. Standardized criteria for the recognition of embryonic nutritional patterns in squamate reptiles. Copeia 1994 (4): 925-935 - get paper here
  • Bonetti, Mathilde 2002. 100 Sauri. Mondadori (Milano), 192 pp. - get paper here
  • Bostic, D. L. 1971. Herpetofauna of the Pacific Coast of north central Baja California, Mexico, with a description of a new subspecies of Phyllodactylus xanti. Transactions of the San Diego Society of Natural History, 16:237—263 - 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
  • Brandon, Ronald A.;Wilson, Allan K. 1994. Crotaphytus collaris (callard lizard). USA: Illinois. Herpetological Review 25 (2): 76 - get paper here
  • Braun, C. A., & Baird, T. A. 2018. Collared Lizard Juveniles Use Caudal Displays while Stalking Prey. Journal of Herpetology 52 (2): 113–115 - get paper here
  • Braun, Cody A.; Troy A. Baird, and Jennifer K. LeBeau 2010. Influence of Substrate Temperature and Directness of Approach on the Escape Responses of Juvenile Collared Lizards. Herpetologica 66 (4): 418-424 - get paper here
  • Brewster, Casey L., Robert S. Sikes and Matthew E. Gifford. 2014. Body size and growth of the eastern collared lizard (Crotaphytus collaris) in Central Arkansas. Herpetological Review 45 (4): 580-583 - get paper here
  • Brewster, Casey L.; Steven J. Beaupre and John D. Willson 2018. Habitat Loss and Local Extinction: Linking Population Declines of Eastern Collared Lizards (Crotaphytus collaris) to Habitat Degradation in Ozark Glades. Journal of Herpetology 52 (3): 352-360. - get paper here
  • Buchwald, Jana B 2014. Ein Stück nordamerikanische Wüste im Wohnzimmer: Bau und Gestaltung eines Terrariums für Halsbandleguane (Crotaphytus collaris). Draco 16 (56): 34-43 - get paper here
  • Burt, Charles E. 1928. The sexual dimorphism of the collared lizard, Crotaphytus collaris. Papers of the Michigan Academy of Science, Arts, and Letters 10: 417-421
  • Burt, Charles E. 1928. The synonymy, variation, and distribution of the collard lizard, Crotaphytus collaris (Say). Occasional Papers of the Museum of Zoology, University of Michigan (196): 1-19 + 7 plates - 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
  • Burt, Charles E. 1935. Further records of the ecology and distribution of amphibians and reptiles in the middle west. American Midland Naturalist 16 (3): 311-336 - 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.
  • Conant,R. & Collins,J.T. 1991. A Field Guide to Reptiles and Amphibians of Eastern/Central North America, 3rd ed. Houghton Mifflin (Boston/New York), xx + 450 p.
  • Cooper Jr., W.E. 2005. Duration of movement as a lizard foraging movement variable. Herpetologica 61 (4): 363-372 - get paper here
  • Cooper, W.E., Jr. & G.W. Ferguson 1973. Estrogenic Priming of Color Change Induced by Progesterone in the Collared Lizard, Crotaphytus collaris Herpetologica 29 (2): 107-110. - get paper here
  • Cope, E.D. 1900. The crocodilians, lizards and snakes of North America. Ann. Rep. U.S. Natl. Mus. 1898: 153-1270 - 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
  • Curtis, Jennifer L. and Troy A. Baird 2008. Living Adult and Ectoparasitic Larval Trombiculid Mites on Collared Lizards. Herpetologica 64 (2): 189-199 - get paper here
  • Davis DR, LaDuc TJ 2018. Amphibians and reptiles of C. E. Miller Ranch and the Sierra Vieja, Chihuahuan Desert, Texas, USA. ZooKeys 735: 97-130 - get paper here
  • de Grijs,P. 1899. Notes on the faculty of changing colour in reptiles. Ann. Mag. Nat. Hist. (7) 3: 396-402 - get paper here
  • DEEMING, D.C. 2022. Inter‐relationships among body mass, body dimensions, jaw musculature and bite force in reptiles. Journal of Zoology jzo.12981. - get paper here
  • Degenhardt, William G.; C. W. Painter, and A. H. Price 1996. Amphibians and reptiles of New Mexico. Univ. New Mexico Press, 431 pp.
  • Dieckmann, M. 2012. Erfahrungen mit der Haltung von Halsbandleguanen im Freilandterrarium. Reptilia (Münster) 17 (94): 68-71 - get paper here
  • Dixon, James R. 2000. Amphibians and reptiles of Texas, second edition. Texas A&M University Press, 421 pp.
  • Drost, T. 2008. Dokumentation eines Terrarienbaus für Halsbandleguane. Iguana Rundschreiben 21 (1): 5-
  • Duméril, A. H. A. 1856. Description des reptiles nouveaux ou imparfaitement connus de la collection du Muséum d’Histoire Naturelle et remarques sur la classification et les charactères des reptiles. Archives du Muséum Hist. Nat. Paris, 8: 438—588. - get paper here
  • Eaton, Theodore H., Jr 1935. Report on amphibians and reptiles of the Navajo country. Bulletin 3. Rainbow Bridge-Monument Valley Expedition : 1-20 - get paper here
  • Eifler, Douglas; Fogarty, Sean 2006. Perch selection by post-breeding female collared lizards (Crotaphytus collaris). Amphibia-Reptilia 27 (3): 461-463 - get paper here
  • Ferguson, G.W. 1976. Color Change and Reproductive Cycling in Female Collared Lizards (Crotaphytus collaris) Copeia 1976 (3): 491-494. - get paper here
  • Fitch, H.S. and Fitch, A.V. 1967. Preliminary Experiments on Physical Tolerances of Eggs of Lizards and Snakes. Ecology, 48: 160-165 - get paper here
  • Fitch, Henry S.; Tanner, Wilmer W. 1951. Remarks concerning the systematics of the collard lizard, (Crotaphytus collaris), with a description of a new subspecies. Transactions of the Kansas Academy of Science 54 (4): 548-559 - get paper here
  • FLESCH, AARON D.; DON E. SWANN, DALE S. TURNER, AND BRIAN F. POWELL 2010. HERPETOFAUNA OF THE RINCON MOUNTAINS, ARIZONA. Southwestern Naturalist 55(2):240–253 - get paper here
  • FOSTER, C. D., S. GREENE, AND R. ZACH 2020. Distinguishing Sex Characteristics of Eastern Collared Lizards (Crotaphytus collaris). Herpetological Review 51: 262-264.
  • Franklin, Dwight 1913. Color Changes in Collared Lizards. Copeia 1913 (1): - get paper here
  • Frierson, L.S., Jr. 1927. Crotaphytus collaris collaris at Taylor Town, Louisiana Copeia 165: 113-114. - get paper here
  • Gibbons, Whit; Judy Greene, and Tony Mills 2009. LIZARDS AND CROCODILIANS OF THE SOUTHEAST. University of Georgia Press, 240 pp.
  • Gilman, Casey A.; Gabriel Candelaria, Ben Gershman, Jeffrey P. Norenberg, and Blair O. Wolf 2013. Respiratory Biology during Gravidity in Crotaphytus collaris and Gambelia wislizenii. Journal of Herpetology Jun 2013, Vol. 47, No. 2: 262-269. - get paper here
  • Gloyd, Howard K. 1937. A herpetological consideration of faunal areas in Southern Arizona. Bulletin of the Chicago Academy of Sciences 5 (5): 77-136 - get paper here
  • González-Romero, A., & Alvarez-Cárdenas, S. 1989. Herpetofauna de la Region del Pinacate, Sonora, Mexico: Un Inventario. The Southwestern Naturalist, 34(4), 519–526 - get paper here
  • Harings, Nicole M.; Kenneth G. Boykin, and Lucas Oligschlaeger 2014. Reptile Occurrence and Habitat Associations on Holloman Air Force Base. Herp. Cons. Biol. 9 (1): 57−66 - get paper here
  • Heimes, P. 2022. LIZARDS OF MEXICO - Part 1 Iguanian lizards. Edition Chimaira, Frankfurt Am Main, 448 pp.
  • Hernandez T, Herr MW, Stevens S, Cork K, Medina-Nava C, Vialpando CJ, Warfel T, Fields N, Brodie C, Graham SP 2019. New distribution records for amphibians and reptiles in eastern Chihuahua, Mexico. Check List 15(1): 79-86 - get paper here
  • Holbrook, John E. 1842. North American Herpetology; or, A description of the reptiles inhabiting the United States. Vol I (2nd ed.). J. Dobson, Philadelphia, 152 pp. - get paper here
  • Hranitz, J.M. & T.A. Baird 2000. Effective Population Size and Genetic Structure of a Population of Collared Lizards, Crotaphytus collaris, in Central Oklahoma Copeia 2000 (3): 786-791. - get paper here
  • Husak, J.F. & S.F. Fox 2003. Spatial Organization and the Dear Enemy Phenomenon in Adult Female Collared Lizards, Crotaphytus collaris Journal of Herpetology 37 (1): 211-215. - get paper here
  • Husak, J.F., J.K. McCoy, S.F. Fox & T.A. Baird 2004. Is Coloration of Juvenile Male Collared Lizards (Crotaphytus collaris) Female Mimicry?: An Experimental Test Journal of Herpetology 38 (1): 156-160. - get paper here
  • Husak, Jerry F. & Matthew N. Rouse 2006. Population variation in escape behavior and limb morphology of collared lizards (Crotaphytus collaris) in Oklahoma. Herpetologica 62 (2): 156-163 - get paper here
  • Ingram, William; Tanner, Wilmer W. 1971. A taxonomic study of Crotaphytus collaris between the Rio Grande and Colorado Rivers. Brigham young University Science Bulletin 13 (2): 1-29
  • Jameson, David H.;Flury, Alvin G. 1949. The reptiles and amphibians of the Sierra Vieja Range of southwestern Texas. Texas Journal of Science 1 (2): 54-77 - 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
  • Klauber, L. M. 1939. Index to the scientific names in studies of reptile life in the arid southwest. Bulletins of the Zoological Society of San Diego 14: 1-2 - get paper here
  • Knowlton, G., & Janes, M. 1934. Distributional and Food Habits Notes on Utah Lizards. Copeia, 1934(1), 10-14 - get paper here
  • Krohn, Alexander R. and Erica Bree Rosenblum 2016. Geographic Color Variation and Physiological Color Change in Eastern Collared Lizards (Crotaphytus collaris) from Southern New Mexico, USA. Herpetologica 72 (4): 318-323.<br /> - get paper here
  • Lazcano D, Nevárez-de los Reyes M, García-Padilla E, Johnson JD, Mata-Silva V, DeSantis DL, Wilson LD. 2019. The herpetofauna of Coahuila, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 13(2) [General Section]: 31–94 (e189) - get paper here
  • Lazcano Villarreal, David & Dixon, J.R. 2002. Lista Preliminar de la Herpetofauna del Estado de Nuevo León. - get paper here
  • LEE, PATRICIA L.M.; CRAIG D.H. SHERMAN, LEE A. ROLLINS, ERIK WAPSTRA & KARL P. PHILLIPS. 2022. Do female amphibians and reptiles have greater reproductive output if they have more mates? Behavioral Ecology and Sociobiology 76(7): 96. - get paper here
  • Legler, J.M. & H.S. Fitch 1957. Observations on Hibernation and Nests of the Collared Lizard, Crotaphytus collaris Copeia 1957 (4): 305-307. - get paper here
  • Lemos-Espinal JA, Smith GR, Gadsden-Esparza H, Valdez-Lares R, Woolrich-Piña GA 2018. Amphibians and reptiles of the state of Durango, Mexico, with comparisons with adjoining states. ZooKeys 748: 65-87 - get paper here
  • Lemos-Espinal JA, Smith GR, Rorabaugh JC 2019. A conservation checklist of the amphibians and reptiles of Sonora, Mexico, with updated species lists. ZooKeys 829: 131-160 - get paper here
  • Lemos-Espinal JA, Smith GR, Woolrich-Piña GA 2018. Amphibians and reptiles of the state of San Luis Potosí, Mexico, with comparisons with adjoining states. ZooKeys 753: 83-106 - get paper here
  • Lemos-Espinal, J.A. & Smith, H.M. 2007. Amphibians and reptiles of the state of Chihuahua, Mexico. Universidad Nacional Autonoma de Mexico, 613 pp.
  • Lemos-Espinal, J.A. & Smith, H.M. 2007. Amphibians and reptiles of the state of Coahuila, Mexico. Universidad Nacional Autonoma de Mexico, 550 pp.
  • Lemos-Espinal, Julio A. and James R. Dixon 2013. Amphibians and Reptiles of San Luis Potosí. Eagle Mountain Publishing, xii + 300 pp.
  • Liner, Ernest A.;Johnson, Richard M.;Chaney, Alan H. 1977. A contribution to the herpetology of Northern Coahuila, Mexico. Transactions of the Kansas Academy of Science 80 (1-2): 47-53 - get paper here
  • Liner, Ernest A.;Montanucci, Richard R.;González-Alonso, Arturo;Mendoza Quijano, Fernando 1993. An additional contribution to the herpetology of Northern Coahuila, Mexico. Bol. Soc. Herpetol. Mex. 5 (1): 9-11 - get paper here
  • Lipfert, J. 2004. Halsbandleguane (die Gattung Crotaphytus). Natur und Tier Verlag (Münster), 64 pp. - get paper here
  • Love, B. 2005. Der Blaue Mexikaner. Reptilia (Münster) 10 (56): 16-17 - get paper here
  • Macedonia, J.M., J.F. Husak, J.M. Brandt, A.K. Lappin & T.A. Baird 2004. Sexual Dichromatism and Color Conspicuousness in Three Populations of Collared Lizards (Crotaphytus collaris) from Oklahoma Journal of Herpetology 38 (3): 340-354. - get paper here
  • Macedonia, Joseph M.; Brandt, Yoni; Clark, David L. 2002. Sexual dichromatism and differential conspicuousness in two populations of the common collared lizard (Crotaphytus collaris) from Utah and New Mexico, USA. Biological Journal of the Linnean Society 77:67-85 - get paper here
  • Marr, John C. 1944. Notes on amphibians and reptiles from the Central United States. American Midland Naturalist 32: 478-490 - get paper here
  • McCoy J K. Fox S F. Baird T A. 1994. Geographic variation in sexual dimorphism in the collared lizard Crotaphytus collaris (Sauria: Crotaphytidae). Southwestern Naturalist 39 (4): 328-335 - get paper here
  • McCoy J K. Harmon H J. Baird T A. Fox S F. 1997. Geographic variation in sexual dichromatism in the collard lizard, Crotaphytus collaris (Sauria: Crotaphytidae). Copeia 1997 (3): 565-571 - get paper here
  • McGuire, J. A. 1996. Phylogenetic systematics of crotaphytid lizards (Reptilia: Iguania: Crotaphytidae). Bulletin of Carnegie Museum of Natural History 32: 1-142 - get paper here
  • Merker, G. et al. 2004. Crotaphytus collaris - Collared Lizard. Reptilia (GB) (33): 39-42 - get paper here
  • Meshaka, Walter E., Stanley E. Trauth, Katherine M. Talbott and Curtis J. Schmidt. 2012. Reproductive characteristics and sexual maturation of the Eastern Collared Lizard, Crotaphytus collaris (Say, 1823), at the Northern Edge of its Geographic Range. Collinsorum 1 (2/3): 9-14 - get paper here
  • Montanucci, R. R. 1983. Natural Hybridization between Two Species of Collared Lizards (Crotaphytus). Copeia 1983 (1): 1-11 - get paper here
  • Montanucci, R. R.;Axtell, R. W.;Dessauer, H. C. 1975. Evolutionary divergence among collared lizards (Crotaphytus), with comments on the status of Gambelia. Herpetologica 31 (3): 336-347 - get paper here
  • Montoya-Ferrer, D & Lazcano, D; 2019. Crotaphytus collaris (Eastern Collared Lizard) Cryptic behavior. Herpetological Review 50 (1): 139-140 - get paper here
  • Nevárez-de-los-Reyes, Manuel, David Lazcano, Elí García-Padilla, Vicente Mata-Silva, Jerry D. Johnson and Larry David Wilson. 2016. The Herpetofauna of Nuevo León, Mexico: Composition, Distribution, and Conservation. Mesoamerican Herpetology 3 (3): 558–638 - get paper here
  • Ortenburger, A. I.;Ortenburger, R. D. 1927. Field observations on some amphibians and reptiles of Pima County, Arizona. Proceedings of the Oklahoma Academy of Science 6: 101-121 - get paper here
  • Parker, W.S. 1973. Notes on reproduction of some lizards from Arizona, New Mexico, Texas, and Utah Herpetologica 29 (3): 258-264. - get paper here
  • Peterson, C.C. & J.F. Husak 2006. Locomotor Performance and Sexual Selection: Individual Variation in Sprint Speed of Collared Lizards (Crotaphytus collaris) Copeia 2006 (2): 216-224. - 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
  • REDINGER, JOSEPH M. & MATTHEW E. GIFFORD. 2022. The Effect of an Insectivorous Lizard Predator (Crotaphytus collaris) on Ozark Glade Orthopteran Assemblages. The American Midland Naturalist 187(2): 210–224. - get paper here
  • Santoyo-Brito, E., Anderson, M. L. & Fox, S. F. 2012. An artificial nest chamber for captive Crotaphytus collaris that increases clutch success and promotes natural behavior. Herpetological Review 43: 430-432 - get paper here
  • Santoyo-Brito, Enrique;Matthew Anderson, and Stanley Fox 2017. Incubation Temperature Modifies Sex Ratio of Hatchlings in Collared Lizards, Crotaphytus collaris. Journal of Herpetology 51 (2):197-201. - get paper here
  • Say, T. 1822. In James, E. Account of an expedition from Pittsburgh to the Rocky Mountains, performed in the years 1819, '20, by order of the Hon. J. C. Calhoun, Secretary of War, under the command of Major Stephen H. Long. Vol. 2. Philadelphia, H. C. Carey & I. Lea. [1823] - get paper here
  • Schmidt, K.P., and D. Owens. 1944. Amphibians and reptiles of northern Coahuila, Mexico. Field Museum of Natural History, Zoological Series. Chicago. 29: 97-115. - get paper here
  • Schmidt, Karl Patterson 1922. The Amphibians and Reptiles of Lower California and the Neighboring Islands. Bull. Amer. Mus. Nat. Hist. 46 (11): 607-707 - get paper here
  • Schumacher, R. 2002. Halsbandleguane. Lebensweise, Haltung, Zucht. Herpeton-Verlag, Offenbach, 138 pp.
  • Schumacher, R. & Schumacher, Y. 2012. Die Halsband- und Leopardleguane des Colorado-Plateaus. Iguana Rundschreiben 25 (1): 4-16
  • Schumacher, R. A. H. 1998. Die kontinuierliche Zucht des Halsbandleguans Crotaphytus collaris (SAY, 1823) im Terrarium, mit Hinweisen zur Unterartproblematik. Salamandra 34 (3): 193-218 - get paper here
  • Sexton, O.J., R.M. Andrews & J.E. Bramble 1992. Size and Growth Rate Characteristics of a Peripheral Population of Crotaphytus collaris (Sauria: Crotaphytidae) Copeia 1992 (4): 968-980. - get paper here
  • Sievert, L.M. 1989. Postprandial Temperature Selection in Crotaphytus collaris Copeia 1989 (4): 987-993. - get paper here
  • Sievert, L.M. & V.H. Hutchison 1991. The Influence of Photoperiod and Position of a Light Source on Behavioral Thermoregulation in Crotaphytus collaris (Squamata: Iguanidae) Copeia 1991 (1): 105-110. - get paper here
  • Skubowius, Bernd 2012. Echsen, Schildkröten, Amphibien und Spinnentiere – die vielfältige Welt der „creeping crawlers“ in Arizona. Draco 13 (50): 70-78 - get paper here
  • Sloan, C.L. & T.A. Baird 1999. Is Heightened Post-Ovipositional Aggression in Female Collared Lizards (Crotaphytus collaris) Nest Defense? Herpetologica 55 (4): 516-522. - get paper here
  • Smith, H. M.; Holland, R. L. 1971. Noteworthy snakes and lizards from Baja California. Journal of Herpetology 5 (1-2): 56-59 - get paper here
  • Smith, H.M. 1935. Miscellaneous notes on Mexican lizards. Univ. Kansas Sci. Bull. 22: 119-156 - get paper here
  • Smith, Hobart M. 1946. Handbook of Lizards: Lizards of the United States and of Canada. Comstock, Ithaca, NY, xxii + 557 pp.
  • Smith, Hobart M.;Leonard, Arthur B. 1934. Distributional records of reptiles and amphibians in Oklahoma. American Midland Naturalist 15: 190-196 - 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
  • Stebbins,R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston
  • Stejneger, L. 1890. Results of a biological survey of the San Francisco Mountain region and Desert of the Little Colorado, Arizona. Part V. Annotated list of reptiles and batrachians collected by Dr. C. Hart Merriam and Vernon Bailey on the San Francisco Mountain Platea North American Fauna, No. 3: 103-118 - get paper here
  • 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
  • Stone, W., and J.A.G. Rehn 1903. On the terrestrial vertebrates of portions of southern New Mexico and western Texas. Proceedings of the Academy of Natural Sciences of Philadelphia 55: 16-34. - get paper here
  • Tanner, Vasco M.;Hayward, C. Lynn 1934. A biological study of the La Sal Mountains, Utah report No. 1 (Ecology). Proceedings of the Utah Academy of Sciences, Arts, and Letters 11: 209-235
  • Tanner, W. W. 1970. A catalogue of the fish, amphibian, and reptile types in the Brigham Young University Museum of Natural History. Great Basin Naturalist 30 (4): 219-226 - get paper here
  • Tanner, W.W. 1987. Lizards and turtles of Western Chihuahua. Great Basin Naturalist. 47: 383-421 - get paper here
  • Taylor, Edward Harrison 1938. Notes on the herpetological fauna of the Mexican state of Sonora. Univ. Kansas Sci. Bull. 24 (19): 475-503 [1936] - get paper here
  • Taylor-Young, M. 2011. The Guide to Colorado Reptiles and Amphibians. Fulcrum Publishing, Golden, Colorado, 169 pp.
  • Terán-Juárez, Sergio A., Elí García Padilla, Vicente Mata-Silva, Jerry D. Johnson and Larry David Wilson. 2016. The herpetofauna of Tamaulipas, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 3 (1): 43–113 - get paper here
  • Trauth, S.E. 1978. Ovarian Cycle of Crotaphytus collaris (Reptilia, Lacertilia, Iguanidae) from Arkansas with Emphasis on Corpora Albicantia, Follicular Atresia, and Reproductive Potential Journal of Herpetology 12 (4): 461-470. - get paper here
  • Trauth, S.E. 1979. Testicular Cycle and Timing of Reproduction in the Collared Lizard (Crotaphytus collaris) in Arkansas Herpetologica 35 (2): 184-192. - get paper here
  • Turner, D. S., Van Devender, T. R., Hale, S. F., Zach, R., Martínez, R., Van Devender, R. W., ... & Paholski, C. 2022. Amphibians and reptiles of Rancho Las Playitas area, Sonora, Mexico. Sonoran Herpetologist, 35, 50-59 - get paper here
  • Valdez-Lares, R.; R. Muñiz-Martínez; E.Gadsden; G. Aguirre-León; G. Castañeda-Gaytán; R. Gonzalez-Trápaga 2013. Checklist of amphibians and reptiles of the state of Durango, México. Check List 9 (4):714-724 - get paper here
  • Van Denburgh, John 1912. Notes on a collection of reptiles from Southern California and Arizona. Proc. Cal. Acad. Sci. 3: 147-154 - get paper here
  • Van Denburgh, John and Joseph R. Slevin 1913. A list of the amphibians and reptiles of Arizona, with notes on the species in the collection of the Academy. Proc. Cal. Acad. Sci. 3 (13): 391-454 - get paper here
  • 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
  • Walker, J.M. 1980. Accessory Femoral Pores in a Colony of the Collared Lizard, Crotaphytus collaris in Texas Journal of Herpetology 14 (4): 417-418. - get paper here
  • Weiß, T. 2004. Pfelge, Haltung und Nachzucht des Östlichen Halsbandleguans, Crotaphytus collaris collaris (SAY 1823). Elaphe 12 (4): 47-55
  • Werning, H. 2015. Jurassic World im Wohnzimmer. Mini-Dinos für das Terrarium. Reptilia (Münster) 20 (114): 26-37 - get paper here
  • Wiggins, J.M., E. Santoyo-Brito, J.B. Scales & S.F. Fox 2020. Gene Dose Indicates Presence of Sex Chromosomes in Collared Lizards (Crotaphytus collaris), a Species with Temperature-Influenced Sex Determination Herpetologica 76 (1): 27-30. - get paper here
  • Wilgers, D.J.; Horne, E.A.; Sandercock, B.K. & Volkmann, A.W. 2006. Effects of rangeland management on community dynamics of the herpetofauna of the Tall-grass Prairie [Flint Hills, Kansas/Oklahoma]. Herpetologica 62 (4): 378-388 - get paper here
  • Williams, Kenneth L.;Smith, Hobart M.;Chrapliwy, Pete S. 1960. Turtles and lizards from Northern Mexico. Transactions of the Illinois State Academy of Science 53 (1/2): 36-45
  • Wirth, M. & F. Riedel 2011. Clowns im Terrarium - Langjährige Haltung und Nachzucht Östlicher Halsbandleguane, Crotaphytus collaris Terraria (31) 6 (5): 26-33.
  • Yedin, I.N. & G.W. Ferguson 1973. Variations in Aggressiveness of Free-Living Male and Female Collared Lizards, Crotaphytus collaris Herpetologica 29 (3): 268-275. - get paper here
  • York, Joshua R. and Troy A. Baird 2015. Testing the adaptive significance of sex-specific mating tactics in collared lizards (Crotaphytus collaris). Biological Journal of the Linnean Society 115 (2), DOI: 10.1111/bij.12514 - get paper here
  • York, Joshua R; Troy A Baird 2017. Sexual selection on male collared lizard (Crotaphytus collaris) display behaviour enhances offspring survivorship . Biological Journal of the Linnean Society 122 (1): 176–183 - get paper here
External links  
Is it interesting? Share with others:

As link to this species use URL address:

without field 'search_param'. Field 'search_param' is used for browsing search result.

Please submit feedback about this entry to the curator