Urosaurus

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Urosaurus is a genus of lizards, commonly known as tree lizards or brush lizards, belonging to the New World family Phrynosomatidae.[1] They are native to North America, specifically the arid and semiarid regions of the western United States and Mexico, spending most of their time on trees, shrubs, or boulders.[2]

Description

Species in the genus Urosaurus can be distinguished from members of the genus Sceloporus by the presence of a gular (under neck) fold and granular lateral scales. They can be distinguished from members of the genus Uta by the presence of enlarged (sometimes only slightly) dorsal scales.[citation needed] Some species of Urosaurus (Urosaurus ornatus) appear to be polymorphic for throat color, but it does vary in different populations. In male lizards, these colors can range anywhere from orange, yellow, green, or turquoise, and in females the color can be either orange or yellow.[3] Throat color in males is also appears to be associated with certain mating behaviors including aggression, boldness, submission, and cautiousness.[4]

Reproduction

Urosaurus have been used as a model system in lizard life-history studies, and populations produce two or more clutches of eggs per year.[5][6] Field studies have also shown a cost of reproduction in a natural New Mexico population of the species Urosaurus ornatus.[7]

Species

In the genus Urosaurus there are eight species which are recognized as being valid.[8]

Image Scientific name Distribution
File:Urosaurus auriculatus 5637644 (cropped).jpg Urosaurus auriculatus (Cope, 1871) Socorro Island in Baja California
Urosaurus bicarinatus (A.M.C. Duméril, 1856) Mexico.
Urosaurus clarionensis (Townsend, 1890) Baja California
Urosaurus gadovi (Schmidt, 1921) Mexico
File:LIZARD, LONG-TAILED BRUSH (urosaurus graciosus) (5-5-08) ticaboo cyn, garfield co, ut -01 (14812845892).jpg Urosaurus graciosus Hallowell, 1854 southwestern United States and adjacent northern Mexico.
Urosaurus lahtelai Rau & Loomis, 1977 Mexico.
File:Urosaurus nigricaudus.jpg Urosaurus nigricauda (Cope, 1864) southern California, Baja California,
File:ORNATE TREE LIZARD Urosaurus ornatus - Flickr - gailhampshire (1).jpg Urosaurus ornatus (Baird & Girard, 1852) southwestern United States and northwestern Mexico.

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other that Urosaurus.

References

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  1. ^ a b Script error: No such module "template wrapper".
  2. ^ Page Module:Citation/CS1/styles.css has no content.Feldman, Chris R.; Flores-Villela, Oscar; Papenfuss, Theodore J. (2011-12-01). "Phylogeny, biogeography, and display evolution in the tree and brush lizard genus Urosaurus (Squamata: Phrynosomatidae)". Molecular Phylogenetics and Evolution. 61 (3): 714–725. doi:10.1016/j.ympev.2011.08.008. ISSN 1055-7903. PMID 21871967.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Hover, Edward L. (1985). "Differences in Aggressive Behavior between Two Throat Color Morphs in a Lizard, Urosaurus ornatus". Copeia. 1985 (4): 933–940. doi:10.2307/1445244. ISSN 0045-8511. JSTOR 1445244.
  4. ^ Page Module:Citation/CS1/styles.css has no content.Feldman, Chris R.; Flores-Villela, Oscar; Papenfuss, Theodore J. (2011-12-01). "Phylogeny, biogeography, and display evolution in the tree and brush lizard genus Urosaurus (Squamata: Phrynosomatidae)". Molecular Phylogenetics and Evolution. 61 (3): 714–725. doi:10.1016/j.ympev.2011.08.008. ISSN 1055-7903. PMID 21871967.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Michel L (1976). "Reproduction in a southwest New Mexican population of Urosaurus ornatus". The Southwestern Naturalist. 21 (3): 281–299. doi:10.2307/3669714. JSTOR 3669714.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Ballinger RE (1984). "Survivorship of the lizard, Urosaurus ornatus linearis, in New Mexico". Journal of Herpetology. 18 (4): 480–481. doi:10.2307/1564108. JSTOR 1564108.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Landwer AJ (1994). "Manipulation of egg production reveals costs of reproduction in the tree lizard (Urosaurus ornatus)". Oecologia. 100 (3): 243–249. Bibcode:1994Oecol.100..243L. doi:10.1007/BF00316951. PMID 28307007. S2CID 3226827.
  8. ^ Urosaurus at the Reptarium.cz Reptile Database. Accessed 28 January 2015.

Further reading

  • Hallowell E (1854). "Descriptions of new Reptiles from California". Proc. Acad. Nat. Sci. Philadelphia 7: 91–97. (Urosaurus, new genus, p. 92).

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