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Leiocephalus vinculum COCHRAN, 1928

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Higher TaxaLeiocephalidae, Iguania, Sauria, Squamata (lizards)
Common NamesE: Gonave Curlytail, Cochran's Curlytail Lizard 
SynonymLeiocephalus vinculum COCHRAN 1928: 54
Leiocephalus personatus vinculum — COCHRAN 1941
Leiocephalus vinculum — SCHWARTZ 1967
Leiocephalus vinculum — SCHWARTZ & HENDERSON 1991: 454
Leiocephalus vinculum— PREGILL 1992: 53 
DistributionHispaniola: Ile de la Gonave (Haiti)

Type locality: Pointe à Raquettes, Île de la Gonâve, Haiti.

INCERTAE SEDIS: Single specimen from Hinche, Haiti, not subspecifically assigned.  
TypesHolotype: MCZ 25435. 
DiagnosisDESCRIPTION: Size moderate (SVL in males to 77 mm, in females to 73 mm); sexual dichromatism not pronounced dorsally but throat pattern dichromatic in 1 subspecies, males with a pair of enlarged postanals; no lateral fold; dorsals imbricate, denticulate, keeled; ventrals imbricate, smooth, weakly to strongly denticulate; median dorsal crest scales slightly enlarged, not attenuate, slightly imbricate, lower than median dorsal caudal scales, 51-65 in occiput-vent distance; one-half midbody scales 18-28; supraoculars usually 6/6; loreals 3-7; temporals 8-13; supraorbital semicircles most often complete; parietals always in contact; median head scales 3-7; preauricular scale small. Throat in lor both sexes black, or with a pair of dark, longitudinal paramedian lines; ventral color yellow; ventral pattern absent in both sexes; facial mask absent; black neck and shoulder patches absent; dorsum (males): (1) tan to metallic tan; prominent, buffy dorsolateral stripes; dorsal zone with a vague pair of dark paramedian stripes enclosing about 12 chevronarm remnants, (2) pale, greenish tan without dorsolateral stripes and with about 12 grayish chevrons, or (3) yellowish brown dorsal zone without dorsolateral stripes and with about 12 transverse bands; throat: (1) clouded, yellowish gray with dark gray to black pattern of a pair of median dark lines preceded by 1-2 dark transverse bars and bordered laterally by parallel lines or line remnants, (2) throat and chest solid black with scattered green scales on chin and throat, black pigment extending dorsally onto sides of neck and anterior surface of forelimbs, or (3) throat and chest dark blue-gray spotted with white; dorsum (females) like males but not metallic, dorsal chevron remnants often well expressed, giving herringbone effect, throat generally like males but dark gray with a pair of paramedian gray lines (1 subspecies) (Schwartz & Henderson 1991: 454). 
CommentSubspecies: With the reallocation of Leiocephalus altavelensis (Noble & Hassler 1933) to L. barahonensis, and the recognition of L. endomychus (Schwartz 1967) as a distinct species, L. vinculum is restricted to the monotypic population on Ile de la Gonave. 
  • Cochran, D. M. 1928. The herpetological collections made in Haiti and its adjoining islands by Walter J. Eyerdam. Proc. Biol. Soc. Washington 41: 53-59. - get paper here
  • Pregill,G.K. 1992. Systematics of the West Indian Lizard Genus Leiocephalus (Squamata: Iguania: Tropiduridae). Misc. Publ. Univ. Kans. Mus. Nat. Hist. 84: 1-69 - get paper here
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
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