Coleonyx elegans GRAY, 1845
Can you confirm these amateur observations of Coleonyx elegans?
|Higher Taxa||Eublepharidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Subspecies||Coleonyx elegans nemoralis KLAUBER 1945|
Coleonyx elegans elegans GRAY 1845
|Common Names||E: Yucatan Banded Gecko|
G: Mexikanischer Krallengecko, Gebänderter Yukatan-Gecko
|Synonym||Coleonyx elegans GRAY 1845: 162|
Gymnodactylus scapularis DUMÉRIL & DUMÉRIL 1851
Coleonyx coleonyx DUMÉRIL 1856
Coleonyx elegans — BOULENGER 1885: 235
Coleonyx elegans — GAIGE 1936
Coleonyx elegans — KLUGE 1993
Coleonyx elegans — RÖSLER 1995: 62
Coleonyx elegans — KÖHLER 2000: 47
Coleonyx elegans — SEUFER et al. 2005
Coleonyx elegans — MATA-SILVA et al. 2015
Coleonyx elegans nemoralis KLAUBER 1945
Coleonyx elegans nemoralis — WERMUTH 1965: 18
Coleonyx elegans nemoralis — RÖSLER 2000: 63
Coleonyx elegans nemoralis — CASTRO-FRANCO & BUSTOS-ZAGAL 2003
Coleonyx elegans nemoralis — MONTALBÁN et al. 2012
|Distribution||Mexico (Yucatan, Campeche, Jalisco, San Luis Potosí, Puebla, Nayarit, Michoacán), Guatemala, Belize, El Salvador|
elegans: S Mexico (Veracruz, Oaxaca, Tabasco, Yucatan, Chiapas, Quintana Roo), south to N Guatemala. Type locality: Belize, British H onduras.
nemoralis: SW Mexico (Colima, Michoacán, Guerrero, Morelos). Type locality: Hacienda Paso del rio, Cólima, Mexico.
|Types||Holotype: BMNH 19220.127.116.11|
Holotype: FMNH 100010 (was: EHT-HMS No. 10509); Hobart M. Smith collector. [nemoralis]
|Diagnosis||DEFINITION (genus): Small to medium-sized (56 to 96 mm snout-vent) eublepharine gekkonid lizards with uniform granular dorsal scales, or with granular scales and a few longitudinal rows of enlarged tubercles. The terminal digital scales are laterally compressed, consisting of two shell-like lateral scales and one pointed dorsal scale, not entirely enclosing the claw. The subdigital lamellae are uniform, imbricate, and form a single row. Ventral scales are fIat and imbricate, and the gular scales are uniform in size or only slightly enlarged adjacent to the mental. Femoral pores are absent, but males have preanal pores. Eyelids are present, and the pupil is vertically elliptical.|
Premaxillary teeth number 11-14, maxillary teeth 22-37, and mandibular teeth 22-44. The nasal bones are paired, frontal and parietal bones are single, the squamosals are small, and the tabular absent. There is an anterodorsal projection on the prefrontal. The stapes is perforated for passage of the stapedial artery. There are 13 to 18 ossicles in the scleral ring. The clavicles are dilated and perforate, and the interclavicle is cruciform. There are 5-6 cervical, 3 sternal, 1-3 mesosternal, and 10-13 interthoracolumbar ribs; 25-26 presacral, 2-3 sacral, and 4-5 pygal vertebrae. There are no calcified endolymphatic sacs. Paired cloacal bones are present in males. (Dixon 1970)
Diagnosis. Coleonyx elegans differs from brevis, fasciatus, and variegatus and its subspecies, in having tubercular scales scattered profusely among the smaller granules of the dorsum. From mitratus it differs in having langer scales sheathing the claws, and in the possession of a more triangular mental and first infralabials. The postnasal depression is more evident in elegans than in mitratus. Elegans elegans differs from e. nemoralis in having the upper prenasals more ccmplete!y in contact, and in the greater profusion of the dorsal and lateral tubercles [from KLAUBER 1945: 191].
|Comment||Distribution: Has been reported for Honduras. Not listed for Honduras by KÖHLER (2000). Not listed for Honduras by WILSON & MCCRANIE (2002).|
Type species: Coleonyx elegans GRAY 1845 is the type species of the genus Coleonyx GRAY 1845.
Species groups: The five species of Coleonyx (described by 1970) form two distinct groups based on size and squamation. Coleonyx elegans, C. mitratus, and C. reticulatus are large species, with enlarged tubercles scattered among the dorsal granules; C. brevis and C. variegatus are small, uniformly granular species (Klauber, 1945; Davis and Dixon, 1958).
|Etymology||The generic name was derived from the Greek words koleos, meaning “sheath”, and onyx, meaning "nail, talon, or claw," in reference to the sheathed claws of this genus.|
The species is named after the Latin adjective elegans, meaning "choice elegant, tasteful”, in reference to the beautiful color pattern (Lemos-Espinal & Dixon 2013).
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