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Sphaerodactylus gilvitorques COPE, 1862

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Higher TaxaSphaerodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Jamaican Collared Geckolet, Jamaica Least Gecko 
SynonymSphaerodactylus gilvitorques COPE 1862
Sphaerodactylus gilvitorques — BOULENGER 1885: 227
Sphaerodactylus gilvitorques — SCHWARTZ & HENDERSON 1991: 496
Sphaerodactylus gilvitorques — KLUGE 1993
Sphaerodactylus gilvitorques — RÖSLER 2000: 112
Sphaerodactylus gilvitorques — WILSON 2011 

Type locality: Jamaica.  
TypesHolotype: ANSP 7555. 
DiagnosisDESCRIPTION: Size moderate (SVL ofonly known female specimen 27 mm); dorsal scales keeled, flattened, imbricate, axilla to groin 20; no middorsal zone of granules or granular scales; ventrals smooth, flattened, cycloid, imbricate, axilla to groin 24; dorsal caudal scales keeled, flat-lying, imbricate, acute, ventral caudal scales cycloid, imbricate, possibly enlarged; snout relatively broad and rounded; scales of snout subhexagonal, weakly keeled, acute, cobble-like, becoming more elongate and subimbricate on frontal region; 3 supralabials to mid-eye; 1 post-nasal; 1 internasal; midbody scales 40. Dorsal ground color (as preserved) light brown; dorsal body pattern of scattered dark brown scales with little tendency toward grouping and formation of larger markings; dark brown median head stripe; 3 dark brown postocular stripes on each side of head; brown postauricular stripe proceeds caudad and fades in scapular region; dark brown preocular stripe; just anterior to scapular region a pale yellow, slightly sinuous collar 3+ (anterior to posterior) scales wide at maximum; venter unicolor paler brown than dorsal ground color; a few isolated dark spots laterally on throat (from Schwartz & Henderson 1991: 496). 
CommentFor illustrations see Barbour, 1921; Thomas and Schwartz, 1974.

Conservation: Presumably extinct (Powell & Henderson 2012, G. Rodda, pers. comm., 16 Dec 2014).

Abundance: only known from the type specimen (Meiri et al. 2017). 
  • Barbour, T. 1910. Notes on the herpetology of Jamaica. Bull. Mus. Comp. Zool. Harvard 52: 273—301 - get paper here
  • Barbour, T. 1921. Sphaerodactylus. Mem. Mus. Comp. Zool. (Harvard) 47: 215-282. - get paper here
  • Boulenger, G.A. 1885. Catalogue of the lizards in the British Museum (Nat. Hist.) I. Geckonidae, Eublepharidae, Uroplatidae, Pygopodidae, Agamidae. London: 450 pp. - get paper here
  • Cope, E.D. 1862. On the genera Panolopus, Centropyx, Aristelliger and Sphaerodactylus. Proc. Acad. Nat. Sci. Philadelphia 13 [1861]: 494-500. - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
  • Thomas, R. and Schwartz, A. 1974. The status of Sphaerodactylus gilvitorques Cope, and of Sphaerodactylus nigropumictatus Gray (Sauria, Gekkonidae). Journal of Herpetology 8 (4): 353-358 - get paper here
  • Wilson, Byron S. 2011. Conservation of Jamaican amphibians and reptiles. In: Hailey et al., eds, Conservation of Caribbean Island Herpetofaunas Volume 2: 273-310 - get paper here
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