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Sphaerodactylus perissodactylius THOMAS & HEDGES, 1988

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Higher TaxaSphaerodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Martin Garcia Geckolet, Dominican Least Gecko 
SynonymSphaerodactylus perissodactylus THOMAS & HEDGES 1988:101
Sphaerodactylus perissodactylius — SCHWARTZ & HENDERSON 1991: 523
Sphaerodactylus perissodactylius — KLUGE 1993
Sphaerodactylus perissodactylius — RÖSLER 2000: 113 
DistributionHispaniola: Dominican Republic (S Sierra Martin Garcia)

Type locality: 0.1 km S, 13.5 km E Canoa (airline distance, measured from junction with Santo Domingo-Barahona highway), 400 m, Barahona Province, República Dominicana, 18°20’39’’ N, 71°01’59’’ W.  
TypesHolotype: USNM 258729. 
DiagnosisDESCRIPTION: Size small (SVL in males to 22 mm, in females to 23 mm); dorsals
small, cycloid to subacute, slightly swollen, weakly keeled, weakly imbricate, axilla to groin 38-45; no area of middorsal granules or granular scales; ventrals flattened, more imbricate than dorsals, acute to cycloid, smooth, axilla to groin 30-36; dorsal caudal scales smooth, flattened, acute to cycloid, ventral caudal scales smooth, flattened, more or less cycloid, with enlarged midventral row; snout acuminate, slightly decurved at tip; snout scales cobble-like, juxtaposed, weakly keeled, grading into subimbricate frontals, then into small, juxtaposed scales in parietal area, then more flattened on neck; 2 postnasals; 1-2 (strongly modally 2) internasals; upper labials to mideye 3; gular scales large, smooth, juxtaposed anteriorly, grading into smaller scales at midthroat and becoming somewhat imbricate; chest scales smooth; midbody scales 57--66; escutcheon large, extending well onto venter and onto thigh near knee, 6-8 x 18-23. Dorsal coloration and pattern not sexually dichromatic; dorsum tan to brown with random peppering of darker scales or with 1-3 light, transverse rings, complete, partial, or indicated by a series of small, light ocelli (at times only 1 or 2); head with bilobed figure defined by medially hooked (at occiput level) light, upper postocular stripes; lower postocular stripe on each side fading near auricular opening; labial stripes extending onto throat and becoming faint; a narrow, light, boldly edged transverse ring, angled posteriorly, extending between auricular openings; another light, transverse (immediately prebrachial) ring crossing neck just anterior to forelimb insertion or angling slightly posteriad and crossing over scapular region; a light, transverse postsacral bar; tail with about 5 rear-pointing, dark-edged, light caudal chevrons or transverse dashes (from Schwartz & Henderson 1991: 523). 
CommentFor illustrations see Thomas and Hedges, 1988.

Abundance: only known from its original description (Meiri et al. 2017). 
  • 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
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