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Cyclura rileyi STEJNEGER, 1903

IUCN Red List - Cyclura rileyi - Endangered, EN
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Higher TaxaIguanidae, Iguania, Sauria, Squamata (lizards)
SubspeciesCyclura rileyi cristata SCHMIDT 1920
Cyclura rileyi rileyi STEJNEGER 1903
Cyclura rileyi nuchalis BARBOUR & NOBLE 1916 
Common NamesE: White Cay Ground Iguana
rileyi: San Salvador Iguana
cristata: White cay iguana
nuchalis: Acklins Iguana, Acklins Rock Iguana 
SynonymCyclura rileyi STEJNEGER 1903: 130
Cyclura rileyi — SCHWARTZ & CAREY 1977
Cyclura rileyi — SCHWARTZ & HENDERSON 1991: 401
Cyclura rileyi — BUCKLEY et al. 2016

Cyclura rileyi rileyi STEJNEGER 1903
Cyclura rileyi rileyi — SCHWARTZ & THOMAS 1975
Cyclura rileyi rileyi — LEMM & ALBERTS 2012
Cyclura rileyi rileyi — BUCKLEY et al. 2016

Cyclura rileyi cristata SCHMIDT 1920
Cyclura cristata SCHMIDT 1920: 6
Cyclura rileyi cristata — SCHWARTZ & THOMAS 1975
Cyclura rileyi cristata — LEMM & ALBERTS 2012
Cyclura rileyi cristata — BUCKLEY et al. 2016

Cyclura rileyi nuchalis BARBOUR & NOBLE 1916
Cyclura nuchalis BARBOUR & NOBLE 1916
Cyclura rileyi nuchalis — SCHWARTZ & THOMAS 1975
Cyclura rileyi nuchalis — LEMM & ALBERTS 2012
Cyclura rileyi nuchalis — BUCKLEY et al. 2016 
DistributionCentral Bahama Islands, including San Salvador, the Exuma Cays, islands of the Crooked-Acklins group.

rileyi: San Salvador I. and satellites. Type locality: San Salvador Island, Bahama Islands.

cristata: southern Exuma Cays. Type locality: "White Cay [Exuma Islands], Bahama Islands".

nuchalis: cays in Bight of Acklins.  
Reproductionoviparous 
TypesHolotype: USNM 31969, MCZ R-36749
Holotype: ANSP 11985 [nuchalis]
Holotype: AMNH 7238 [cristata] 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 1595 characters), are available for collaborators and contributors. Please contact us for details. 
CommentFor illustrations see Barbour and Noble, 1916 (as C. nuchalis); Schwartz and Carey, 1977. 
EtymologyNamed after Joseph Harvey Riley (1873-1941), a biologist and ornithologist at the Smithsonian (1896-1941) who became Associate Curator of Birds (1932).

C. r. cristata was named after Latin crista = tuft or crest; cristata = crested.

C. r. nuchalis was named after the Latin nucha, meaning nape. 
References
  • Alberts, A.C.; Carter, R.L.; Hayes, W.K. & Martins, E.P. (eds.) 2004. Iguanas - Biology and Conservation. University of California Press, 356 pp. - get paper here
  • Barbour, T. and Noble, G.K. 1916. A revision of the lizards of the genus Cyclura. Bull. Mus. Comp. Zool. Harvard 60 (4): 139-64. - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Buckley, Larry J.; Kevin de Queiroz, Tandora D. Grant, Bradford D. Hollingsworth, John B. Iverson (Chair, <br />Stesha A. Pasachnik, and Catherine L. Stephen (Iguana Taxonomy Working Group, ITWG 2016. A Checklist of the Iguanas of the World (Iguanidae; Iguaninae). Herp. Cons. Biol. 11 (Monograph 6) - get paper here
  • GASKINS, Leo C. & Brian R. SILLIMAN 2015. Crab predation by the San Salvador rock iguana (Cyclura rileyi). Herpetological Bulletin (132) - get paper here
  • Hayes, William K.; Ricardo A. Escobar, Shawn K. Fry, Edgar M. Fortune, Joseph A. Wasilewski, Donald M. <br />Tuttle, Kathryn S. West, John B. Iverson, Sandra D. Buckner, and Ronald L. Carter 2016. Conservation of the Endangered Sandy Cay Rock Iguanas (Cyclura rileyi cristata): Invasive Species<br />Control, Population Response, Pirates, Poaching, and Translocation. Herp. Cons. Biol. 11 (Monograph 6) - get paper here
  • Hayes, William K.; Samuel Cyril Jr., Tom Crutchfield, Joseph A. Wasilewski, Thomas A. Rothfus, and<br />Ronald L. Carter 2016. Conservation of the Endangered San Salvador Rock Iguanas (Cyclura rileyi rileyi): Population Estimation, Invasive Species Control, Translocation, and Headstarting. Herp. Cons. Biol. 11 (Monograph 6) - get paper here
  • Iverson, John B.; Geoffrey R. Smith, Stesha A. Pasachnik, Kirsten N. Hines, and Lynne Pieper 2016. Growth, Coloration, and Demography of an Introduced Population of the Acklins Rock Iguana (Cyclura rileyi nuchalis) in the Exuma Islands, the Bahamas. Herp. Cons. Biol. 11 (Monograph 6) - get paper here
  • Lemm, J.M. & Alberts, A.C. 2012. Cyclura. Elsevier / Academic Press, 221 pp.
  • Malone,C.L.; Wheeler,T.; Taylor, J.F. & Davis,S.K. 2000. Phylogeography of the Caribbean Rock Iguana (Cyclura): implications for conservation and insights on the biogeographic history of the West Indies. Mol. Phylogen. Evol. 17 (2): 269 - get paper here
  • Schmidt, K. P. 1920. A new Cyclura from White Cay, Bahama Islands. Proc. Linn. Soc. New York 33: 6-7
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
  • Schwartz, A. and Carey, M. 1977. Systematics and evolution in the West Indian iguanid genus Cyclura. Stud. Fauna Curaçao and Carib. Is. 53(173):15-97. - get paper here
  • Stejneger, L. 1903. A new species of large iguana from the Bahama Islands. Proc. Biol. Soc. Washington 16:129-132. - get paper here
  • Uetz PH, Powell R. 2025. Etymologies of Caribbean reptiles. Caribbean Herpetology 98: 1–9 - get paper here
 
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