The common Puerto Rican ameiva, Puerto Rican ground lizard, or siguana común (Pholidoscelis exsul) is a species of lizard in the whiptail family.[2]
| Common Puerto Rican ameiva | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Family: | Teiidae |
| Genus: | Pholidoscelis |
| Species: | P. exsul
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| Binomial name | |
| Pholidoscelis exsul (Cope, 1862)
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| Synonyms[2] | |
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Geographic range
editAmeiva exsul is found in coastal habitats of Puerto Rico, the United States Virgin Islands, and the British Virgin Islands. In Puerto Rico, the species is also found on the island of Isla Culebra, as well as in the Toro Negro State Forest.[3]
Description
editPholidoscelis exsul is a relatively large lizard; males can grow up to 85 cm (33 in). The maximum recorded male snout-to-vent length (SVL) is 201 mm (7.9 in), and the maximum recorded female SVL is 99 mm (3.9 in).
Color patterns vary widely among individuals, populations, and islands. Animals are predominantly colored gray, black, or brown, with large or small white dots along their backs. Dorsolateral stripes vary in number, length, and color. All individuals have a white or blue-white mottled stomach. The chin shield and throat patch are often light pink. Juveniles generally have a bright blue tail and more dots than stripes.
Biology
editPuerto Rican ground lizards occur in habitat with open canopy structure and loose sandy soil in elevations between sea-level and 600 m (2,000 ft) where the temperature is above 24 °C (75 °F) year-round.[4] Ground lizards forage for insects and small fruits and scavenge for dead animals or trash scraps in urban areas.
Reproduction
editSexually mature females of P. exsul bury 2–7 pink eggs approximately 100 mm (3.9 in) below ground in loose soil in June–August. Juveniles may have a bright blue tail, like the closely related Pholidoscelis wetmorei (blue-tailed ground lizard), but they will lose the bright blue color in their tail with age. Individuals can live more than six years.
Threats
editThe main threat to P. exsul individuals is from other animals which eat ground lizards. Mammalian predators, all invasive species, include feral cats, dogs, and small Indian mongooses. Avian predators include American kestrels, Greater Antillean grackles, and pearly-eyed thrashers.
References
edit- ^ Platenberg, R.; Monson, O.; Rodriguez, C.; Angeli, N. (2017). "Pholidoscelis exsul". IUCN Red List of Threatened Species. 2017: e.T50009074A121641025. doi:10.2305/IUCN.UK.2017-3.RLTS.T50009074A121641025.en. Retrieved 12 November 2021.
- ^ a b "Ameiva exsul ". The Reptile Database. www.reptile-database.org.
- ^ Bosques de Puerto Rico: Bosque Estatal de Toro Negro. Archived 2015-08-07 at the Wayback Machine Hojas de Nuestro Ambiente. July 2008. [Publication/Issue: P-030] Puerto Rico Department of Natural and Environmental Resources. Retrieved 10 September 2013.
- ^ Henderson RW, Powell R (2009). Natural History of West Indian Reptiles and Amphibians. Gainesville: University Press of Florida. 520 pp. ISBN 978-0813033945.
Further reading
edit- Boulenger GA (1896). "Ueber einige Reptilien von der Insel Mona (Westindien) ". Jahresbericht und Abhandlungen des Naturwissenschaftlichen Vereins in Magdeburg 1894-1896: 112–114. (Ameiva alboguttata, new species, pp. 112–113). (in German).
- Cope ED (1862). "Synopsis of the Species of Holcosus and Ameiva, with Diagnoses of new West Indian and South American Colubridæ". Proc. Acad. Nat. Sci. Philadelphia 14: 60–82. (Ameiva plei Var. exsul, new variation, p. 66).
- Heatwole H, Torres F (1967). "Distribution and Geographic Variation of the Ameivas of Puerto Rico and the Virgin Islands". Studies on the Fauna of Curaçao and other Caribbean Islands 24 (92): 63–111. (Ameiva desechensis, new species, pp. 95–96).
- Schwartz A, Thomas R (1975). A Check-list of West Indian Amphibians and Reptiles. Carnegie Museum of Natural History Special Publication No. 1. Pittsburgh, Pennsylvania: Carnegie Museum of Natural History. 216 pp. (Ameiva exsul, pp. 58–59).