Sphaerodactylus nicholsi GRANT, 1931
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|Higher Taxa||Sphaerodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: Puerto Rican Crescent Geckolet, Nichols Least Gecko, Nichol's dwarf sphaero|
|Synonym||Sphaerodactylus nicholsi GRANT 1931: 204|
Sphaerodactylus nicholsi — THOMAS & SCHWARTZ 1966: 242
Sphaerodactylus nicholsi nicholsi — THOMAS & SCHWARTZ 1966: 243
Sphaerodactylus nicholsi — SCHWARTZ & HENDERSON 1991: 511
Sphaerodactylus nicholsi — KLUGE 1993
Sphaerodactylus nicholsi — RÖSLER 2000: 113
Sphaerodactylus nicholsi — RÖSLER 2018: 4
|Distribution||Puerto Rico, Mona Island, Isla Cueva and Isla Guayacan [HR 30: 111], Magueyes|
Type locality: 3 mi. W Ensenada, Puerto Rico.
|Types||Holotype: MCZ 34578.|
|Diagnosis||DESCRIPTION: Size small (SVL in males to 24 mm, in females to 25 mm); dorsals|
moderate, acute, strongly keeled, flattened, imbricate, axilla to groin 19-28; no area of middorsal granules or granular scales; ventrals large, cycloid, imbricate, smooth, axilla to groin 20-28; dorsal caudal scales acute, imbricate, flat-lying or only slightly erected, ventral caudal scales smooth, enlarged midventrally; snout broad, short; snout scales large, broad, flat, juxtaposed; 1 postnasal; 1-3 (mode 1) internasals; upper labials to mideye 3; gular scales keeled or smooth; chest scales smooth; midbody scales 35-45; escutcheon moderate, with extensions onto thighs, 4-7 x 9-22. Not sexually dichromatic; dorsum brown to tan with darker brown spotting or dark-edged ocelli; scapular pattern a dark patch (at times broken into 2) with 2 included, white ocelli at times present; light postocular stripe usually extending onto tail; head with tan crescent (or oval), which may meet postocular stripes; sacral pattern U-shaped, dark, light-edged; throat plain gray to pale yellow, or with spots or streaks; venter gray to flesh-colored; tail brown to orange-brown with some spotting or ocellation, underside yellow, pale orange, orange-brown; juveniles patternless; iris brown to golden orange (from Schwartz & Henderson 1991: 511).
|Comment||For illustrations see Grant, 1931; Thomas and Schwartz, 1966 (as S. n. nicholsi); Rivero, 1978 (as S. n. nicholsi).|
|Etymology||Named after John Treadwell Nichols (1883-1958), an ichthyologist and ornithologist who co-described the rediscovered Bermuda Petrel (1916), believed extinct since the 1620s. He founded Copeia (1913), which became the official journal of the American Society of Ichthyologists and Herpetologists (1923). He was Associate Curator of the Ichthyology Department, American Museum of Natural History (1920-1942).|
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