Definition
Ctenosaura oaxacana is a putative species of spiny‑tailed iguana belonging to the family Iguanidae. It is reported to be endemic to the Mexican state of Oaxaca.
Overview
The species is assigned to the genus Ctenosaura, a group of large, diurnal, primarily arboreal lizards commonly referred to as spiny‑tailed iguanas. C. oaxacana was formally described in a taxonomic paper that assigned it distinct morphological characteristics separating it from closely related species such as C. pectinata and C. melanosterna. The type locality is reported to be within the Sierra Madre del Sur region of Oaxaca, where the species is thought to inhabit tropical deciduous forests and rocky outcrops. Its conservation status has not been evaluated by the International Union for Conservation of Nature (IUCN); however, habitat loss in the region suggests potential vulnerability.
Etymology / Origin
The generic name Ctenosaura derives from the Greek words kténos (“comb”) and sáûra (“lizard”), referencing the comb‑like spines along the tail. The specific epithet oaxacana is a Latinized form of “Oaxaca,” indicating the species’ geographic association with the state of Oaxaca, Mexico.
Characteristics
- Size: Reported adult snout‑vent length (SVL) ranges from approximately 30 to 45 cm, with a proportionally long, heavily keeled tail bearing prominent dorsal spines.
- Coloration: Descriptions emphasize a dorsal pattern of dark brown to black blotches on a lighter ground colour, with a lighter ventral surface. Some individuals display faint lateral striping.
- Scale morphology: The dorsal scales are reportedly enlarged and keeled, particularly on the tail, a diagnostic trait of the genus.
- Behavior: Like other Ctenosaura species, it is presumed to be diurnal, primarily herbivorous but opportunistically omnivorous, and capable of rapid sprinting when threatened.
Accurate information is not confirmed for several aspects of morphology, ecology, and distribution, as the species is known from a limited number of specimens and has not been extensively studied.
Related Topics
- Genus Ctenosaura – Overview of the spiny‑tailed iguanas, their taxonomy, and distribution across Central America and Mexico.
- Herpetofauna of Oaxaca – The diverse reptile community of the Oaxaca region, including endemic and threatened species.
- Conservation of Mexican Reptiles – Threats and protective measures relevant to native lizard species, especially habitat degradation in southern Mexico.
- Iguanidae – The broader family encompassing iguanas, anoles, and related lizards, with emphasis on evolutionary relationships.
Note: The available literature on Ctenosaura oaxacana is sparse, and further field studies are required to verify its taxonomic status, ecological requirements, and conservation needs.