Coleonyx switaki (MURPHY, 1974)
Can you confirm these amateur observations of Coleonyx switaki?
|Higher Taxa||Eublepharidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: Switak’s Banded Gecko|
G: Gebänderter oder Switaks Barfuß-Gecko
S: Geco Descalzo
|Synonym||Anarbylus switaki MURPHY 1974|
Coleonyx swaitaki [sic] — STEBBINS 1985: 112
Coleonyx switaki — KLUGE 1993
Coleonyx switaki — RÖSLER 2000: 63
Coleonyx switaki— PIANKA & VITT 2003: 39
Coleonyx switaki — SEUFER et al. 2005
|Distribution||USA, Mexico (from San Diego County, SW California southward to the vicinity of San Ignacio in C Baja California, Mexico)|
Type locality: “5.5 miles west of San Ignacio (27 'N, 112 51'W) along Mexican Highway 1, Baja California Sur, Mexico, 500 feet elevation.”
|Types||Holotype: CAS 139472|
|Diagnosis||Diagnosis. Coleonyx switaki differs from other Coleonyx in these characters: deep rostral depression; reduced transverse sub-digital lamellae; 48-70 scales around the non-regenerated tail; tip of ventral portion of tail tuberculate; diploid complement of 24 chromosomes consisting of a graded series of 22 metacentric and 2 acrocentric chromosomes with each 2 pairs conspicuously larger than those following when ranked by size; bright yellow breeding color in males; dorsal pattern a series of transverse spots arranged in bands, sometimes modified; 6-11 bands between nape of neck and caudal constriction;nuchal loop absent; derived adult color pattern present in juveniles; S-shaped isthmus of the thyroid gland [Grismer 1990].|
|Comment||Grismer (1999) elevated gypsicolus to full species status based on scale counts: it has 42-48 eyelid fringe scales versus 32-40 in Coleonyx switaki switaki.|
Variation: C. switaki is a highly variable species. See Grismer 2001 for a series of photos that show the many color patterns rnaging from spotted to banded.
|Etymology||Named after Karl H. Switak, Supervising Herpetologist of the Steinhart Aquarium, San Francisco, CA.|
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