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Distribution

provided by ReptileDB
Continent: Middle-America North-America
Distribution: San Luis Potosí, Coahuila, probably Chihuahua, Nuevo León. Northward to C Texas.
Type locality: Devils River, Texas.
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ReptileDB

Gerrhonotus infernalis

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The Texas alligator lizard (Gerrhonotus infernalis) is a species of lizard in the subfamily Gerrhonotinae of the family Anguidae. The species is endemic to the central region of the American state of Texas, and south into adjacent northern Mexico.

Description

The Texas alligator lizard is a medium-sized lizard, attaining a maximum total length (including tail) of around 24 to 25 in (61 to 64 cm). It is the largest lizard species in Texas, and one of the largest alligator lizards in the world. This lizard has a flat, wedge-shaped head. Its body is generally a yellow-brown color, often with darker brown and white checker patterning on its dorsal surfaces, and uniformly light-colored, white, or grey on its ventral surfaces. Its scales are very stiff and plate-like. It has short limbs, and a tail that can fall off to distract a potential predator, but will regrow in time.

Behavior

The Texas alligator lizard is a relatively slow, diurnal lizard, with quite good vision. Though not generally aggressive, it may bite if handled, and is incorrectly considered to be venomous by many cultures.

Habitat

G. infernalis is often found on rocky hillsides, where it hides among the stones or in limestone crevices.

Diet

The primary diet of G. infernalis is insects and other invertebrates, but it may sometimes prey on nestling birds or rodents.

Reproduction

Breeding occurs year-round; sometimes, multiple clutches of eggs are laid per year. Females will often stay near the nesting site to protect it, but no parental care occurs once the young alligator lizards hatch. The young generally have more striking markings, and are only about 3–4 in (7.6–10.2 cm) long (including tail).

References

  1. ^ Hammerson, G.A.; Vazquez Díaz, J.; Gadsden. H.; Quintero Díaz, G.E.; Ponce-Campos, P.; Lavin, P. (2007). "Gerrhonotus infernalis". IUCN Red List of Threatened Species. 2007: e.T63707A12707760. doi:10.2305/IUCN.UK.2007.RLTS.T63707A12707760.en. Retrieved 20 November 2021.
  2. ^ Species Gerrhonotus infernalis at The Reptile Database . www.reptile-database.org.
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Gerrhonotus infernalis: Brief Summary

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The Texas alligator lizard (Gerrhonotus infernalis) is a species of lizard in the subfamily Gerrhonotinae of the family Anguidae. The species is endemic to the central region of the American state of Texas, and south into adjacent northern Mexico.

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Gerrhonotus infernalis ( Spanish; Castilian )

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La lagartija caimán norteña (Gerrhonotus infernalis), es una especie de lagarto escamoso ánguido del género Gerrhonotus. Fue descrito originalmente por el herpetólogo, ornitólogo y ictiólogo estadounidense Spencer Fullerton Baird en 1856.[1][2]

Sinonimia y taxonomía

David Good en 1988 consideró a G. infernalis sinónimo de G. liocephalus; tiempo después consideró a G. infernalis cómo un taxón valido y en 1994 presentaría evidencia de que G. taylori era sinónimo menor de G. infernalis.[3]​ Lemos-Espinal y Smith, 2007 continúan reconociendo como una especie válida a Gerrhonotus taylori a pesar de la evidencia contraria presentada por Good en 1994. Recientemente, G. taylori no es considerado como un taxón válido por Liner y Casas-Andreu en 2008, por Lavín-Murcio y Lazcano en 2010 y por Jones & Lovich en 2009.[1][4]​ Actualmente, la clasificación taxonómica válida de esta lagartija caimán es Gerrhonotus infernalis.[1][3][4][5]

Etimología

El epíteto específico de G. infernalis proviene del latín y significa: "subterráneo" o "perteneciente a las regiones inferiores". Esto es en referencia a sus hábitos secretos y semifosoriales.[1][6]

Descripción

 src=
Imágen de la página 540 de "Annual report of the Board of Regents of the Smithsonian Institution" (1846) que muestra una ilustración de un G. infernalis.
 src=
Una lagartija caimán norteña posada en un árbol.

La lagartija caimán norteña es un lagarto escamoso de tamaño mediano, con una longitud total máxima, incluyendo la cola de 61 a 64 cm. Es la especie de lagarto más grande de Texas y uno de los lagartos caimán más grandes del mundo. Su cabeza es triangular, aplanada y larga, en forma de cuña. Su cuerpo es generalmente de color marrón amarillento, a menudo con un patrón de cuadros de color marrón oscuro y blanco en sus superficies dorsales, y uniformemente de color claro, blanco o gris en sus superficies ventrales. Sus escamas son muy rígidas y parecidas a placas. Tiene extremidades cortas y una cola que puede soltar para distraer a un depredador potencial, pero puede crecer con el tiempo como una salamanquesa.

Dimorfismo sexual

Se sabe que existe un dimorfismo sexual en G. infernalis, en dónde los machos tienen un mayor tamaño y una cabeza de mayor dimensiones; se cree que una cabeza más grande le permite a los machos una mayor ventaja en combates y en rituales de apariamento.[7]​ Patrones similares se han observado en otros lagartos ánguidos como en A. graminea y B. imbricata

Referencias

  1. a b c d «Gerrhonotus infernalis». The Reptile Database. Consultado el 18 de enero de 2022.
  2. 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 10: 253-256 [1858] -
  3. a b Good, David A. 1994. Species limits in the genus Gerrhonotus (Squamata: Anguidae). Herpetological Monographs 8: 180-202 -
  4. a b Jones, L.L. & Lovich, R.E. 2009. Lizards of the American Southwest. A photographic field guide. Rio Nuevo Publishers, Tucson, AZ, 568 pp.
  5. García-Vázquez, U. O., and R. W. Bryson, Jr. 2017. Gerrhonotus infernalis (Baird, 1859). Mexico, Durango. Mesoamerican Herpetology 4(1): 196–197 -
  6. Lemos Espinal, Julio A.; Ray Dixon, James (2013). Amphibians and Reptiles of San Luis Potosí. (en inglés). Eagle Mountain Publishing.
  7. García-Bastida, Margarita, David Lazcano, Lance D. McBrayer, and Roberto Mercado-Hernández 2013. Sexual Dimorphism in the Alligator Lizard Gerrhonotus infernalis (Sauria: Anguidae): Implications for Sexual Selection. (PDF). Southwestern Naturalist Jun 2013, Vol. 58, No. 2: 202-208.
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Gerrhonotus infernalis: Brief Summary ( Spanish; Castilian )

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La lagartija caimán norteña (Gerrhonotus infernalis), es una especie de lagarto escamoso ánguido del género Gerrhonotus. Fue descrito originalmente por el herpetólogo, ornitólogo y ictiólogo estadounidense Spencer Fullerton Baird en 1856.​​

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Gerrhonotus infernalis ( Basque )

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Gerrhonotus infernalis Gerrhonotus generoko animalia da. Narrastien barruko Anguidae familian sailkatuta dago.

Erreferentziak

  1. (Ingelesez)IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. www.iucnredlist.org. 2012ko urriaren 20an eskuratua.
  2. The Species 2000 and ITIS Catalogue of Life

Ikus, gainera

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Gerrhonotus infernalis: Brief Summary ( Basque )

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Gerrhonotus infernalis Gerrhonotus generoko animalia da. Narrastien barruko Anguidae familian sailkatuta dago.

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Gerrhonotus infernalis ( French )

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Gerrhonotus infernalis est une espèce de sauriens de la famille des Anguidae[1].

Répartition

 src=
Aire de répartition de l'espèce Gerrhonotus infernalis selon l'UICN (consulté le 22 janvier 2013).

Cette espèce se rencontre dans le nord du Mexique et au Texas aux États-Unis[1].

Description

Ce lézard atteint environ 60 centimètres. Il est de couleur brun-jaune, avec parfois des motifs blanc ou brun sur le dos. Le ventre est blanc ou beige. Les pattes sont plutôt fines, avec des doigts fins et bien séparés. Les écailles sont rectangulaires, assez grosses sur le dessus et le ventre et plus fines sur les côtés.

Il est capable de se séparer de sa queue en cas d'attaque par un prédateur (autotomie), celle-ci repoussant ensuite.

C'est un reptile diurne, assez lent, et doté d'une bonne vision. Il apprécie les zones rocheuses. C'est un carnivore insectivore, qui consomme de nombreux insectes et autres arthropodes.

Les femelles pondent parfois plusieurs fois dans l'année. Elles restent souvent à proximité des sites de ponte pour protéger les œufs, mais ne s'occupent pas des petits une fois ceux-ci nés. Les juvéniles mesurent environ 7 à 10 centimètres à la naissance.

Publication originale

  • Baird, 1859 "1858" : Description of new genera and species of North American lizards in the museum of the Smithsonian Institution. Proceedings of the Academy of Natural Sciences of Philadelphia, vol. 10, p. 253-256 (texte intégral).

Notes et références

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Gerrhonotus infernalis: Brief Summary ( French )

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Gerrhonotus infernalis est une espèce de sauriens de la famille des Anguidae.

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Gerrhonotus infernalis ( Vietnamese )

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Gerrhonotus infernalis là một loài thằn lằn trong họ Anguidae. Loài này được Baird mô tả khoa học đầu tiên năm 1859.[3]

Tham khảo

  1. ^ Hammerson GA, Vazquez Díaz J, Gadsden H, Quintero Díaz GE, Ponce-Campos P, Lavin P. (2007). Gerrhonotus infernalis. 2008 Sách đỏ IUCN. Liên minh Bảo tồn Thiên nhiên Quốc tế 2008. Truy cập ngày 6 tháng 11 năm 2008.
  2. ^ The Reptile Database. www.reptile-database.org.
  3. ^ Gerrhonotus infernalis. The Reptile Database. Truy cập ngày 31 tháng 5 năm 2013.


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Gerrhonotus infernalis: Brief Summary ( Vietnamese )

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Gerrhonotus infernalis là một loài thằn lằn trong họ Anguidae. Loài này được Baird mô tả khoa học đầu tiên năm 1859.

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