Ctenosaura acanthura, is a species of iguanid lizard found in eastern Mexico and extreme western Guatemala. The standardized English name is the Mexican spiny-tailed iguana (Spanish: garrobo del noreste).: 58 p. Confusingly however, an earlier edition of standardized names for Mexican herpetofauna called Ctenosaura acanthura the northeastern spinytailed iguana and applied the name Mexican spinytailed iguana to Ctenosaura pectinata,: 45–46 p. which was called the western spiny-tailed iguana in the second edition.: 58 p. It has also been referred to as the Veracruz spiny-tailed iguana and Gulf Coast spiny-tailed iguana. It is an egg laying species that is mostly herbivorous, and a moderately large lizard commonly growing over one meter in total length.: 139–144 p.
Diurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
An insectivore is a carnivorous plant or animal that eats insects. An alternative term is entomophage, which also refers to the human practice of e...
A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example, foliage, for the main component of its die...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Oviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
Precocial species are those in which the young are relatively mature and mobile from the moment of birth or hatching. Precocial species are normall...
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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starts withMexican spiny-tailed iguanas have distinctive keeled scales on their long tails, which give them their common name. The males are capable of growing up to 1.4 meters (4 ft 7 in) in total length and females slightly shorter at 1 meter (3 ft 3 in). They have a crest of long spines which extends down the center of the back. Their base color is black with white or cream-colored markings.
Ctenosaura acanthura is often confused with the closely related and similar appearing black iguana (Ctenosaura similis ) however, Ctenosaura acanthura does not occur in the Mexican states of Tabasco, Campeche, Yucatan, Quintana Roo, or in Belize (Yucatan Peninsula).: 128a p. Scales of the tail whorls on Ctenosaura acanthura are very thorny (an angle of the keels over 30 degrees) and the crest of large spines on the back is interrupted in the pelvic area, forming a brake between the crest of large spines on the tail. On the black iguana (Ctenosaura similis ) the crest of large spines on the back is uninterrupted and continuous with the large spines on the tail.: 59 p. : 144 p.
Ctenosaura acanthura occurs in the lowlands on the eastern versant of Mexico throughout the Veracruz moist forests ecoregion and western portions of the Petén–Veracruz moist forests, from sea level up to ca. 1000 meters elevation. It is known from the Mexican state of Tamaulipas in the general vicinity of the Tropic of Cancer, southward throughout most of Veracruz, with a few records from lower elevation localities in adjacent areas of extreme eastern San Luis Potosi, Hidalgo, Pueblea, and Oaxaca. Southward, an apparently isolated population occurs in central Chiapas, in the Rio Grijalva valley, with a record extending the range into extreme western Guatemala.: 128a p. : 139–144 p.
The status of six specimens collected near the town of Sabinas Hidalgo, Nuevo Leon by Hobart M. Smith in 1934 are questionable and C. acanthura has not been reported from Nuevo León before or after 1934. The presence of C. acanthura in Nuevo León is doubtful and the collector (Hobart Smith) did not included the species in his checklist for the state of Nuevo León in later years.: 224 p.
Northeastern spinytail iguanas are excellent climbers, and prefer a rocky habitat with plenty of crevices to hide in, rocks to bask on, and nearby trees to climb. They are diurnal and fast moving, employing their speed to escape predators but will lash with their tails and bite if cornered. This species may commonly be found around areas of human habitation.
They are primarily herbivorous, eating flowers, leaves, stems, and fruit, but they will opportunistically eat smaller animals, eggs, and arthropods. Juveniles tend to be insectivores becoming more herbivorous as they get older.
Mating generally occurs in the spring. A male shows dominance and interest by head bobbing, eventually chasing the female until he can catch her and subdue her. Within eight to ten weeks, the female will dig a nest and lay clutches of up to 24 eggs. The eggs hatch in 90 days with the babies digging their way out of the sand. These juveniles are typically green with brown markings, although all-brown hatchlings have been recorded as well.
