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Sphaerodactylus williamsi THOMAS & SCHWARTZ, 1983

IUCN Red List - Sphaerodactylus williamsi - Critically Endangered, CR

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Higher TaxaSphaerodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Haitian Striped Geckolet, Williams' Least Gecko 
SynonymSphaerodactylus williamsi THOMAS & SCHWARTZ 1983: 96
Sphaerodactylus williamsi — SCHWARTZ & HENDERSON 1991: 547
Sphaerodactylus williamsi — KLUGE 1993
Sphaerodactylus williamsi — RÖSLER 2000: 114 
DistributionHaiti (vicinity of Ca Soleil), Hispaniola

Type locality: 12.2 km W Ça Soleil, Département de l'Artibonite, Haiti.  
TypesHolotype: MCZ 156209. 
DiagnosisDESCRIPTION: Size small (SVL in only known female 22 mm); dorsals keeled,
imbricate, small, axilla to groin 33; no area of middorsal granules or granular scales; ventrals smooth, imbricate, axilla to groin 33; dorsal caudal scales smooth, flat-lying, acute, juxtaposed, ventral caudal scales acute, juxtaposed, not enlarged midventrally; snout attenuate, head small and relatively narrow; snout scales moderately large, juxtaposed, smooth anteriorly and keeled posteriorly; 2 postnasals; 1 internasal; upper labials to mideye 3; gular scales between infralabial rami large, smooth, juxtaposed, central gulars very small, smooth, imbricate, grading quickly into much larger, keeled throat scales; chest scales smooth; midbody scales 52; escutcheon unknown. Sexual dichromatism unknown; dorsum dark brown with 4 pale buffy, longitudinal lines; head and neck without pattern (no scapular patch and ocelli) but with isolated, scattered, buffy scales; a pair of slightly more prominent buffy lines on sides; venter creamy white with a few scattered, dark dots on throat and vague indications of dark, 10ngitudinal1ines posteriorly (Schwartz & Henderson 1991: 546). 
CommentFor illustrations see Thomas and Schwartz, 1983.

Abundance: only known from the type specimen (Meiri et al. 2017). 
EtymologyNamed after Dr. Ernest Edward Williams (1914-1998), a herpetologist, Museum of Comparative Zoology, Harvard. 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - 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 S. B. Hedges 1988. Two new geckos (Sphaerodactylus) from the Sierra Martin Garcia of Hispaniola. Herpetologica 44: 96-104. - get paper here
  • Thomas, R. and A. Schwartz. 1983. Variation in Hispaniolan Sphaerodactylus (Sauria: Gekkonidae), In: A. G. J. Rhodin and K. Miyata (eds.), Advances in Herpetology and Evolutionary Biology. Essays in Honor of Ernest E. Williams. Museum of Comparative Zoology, pp. 86-98. - get paper here
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