Acanthodactylus erythrurus
Under special protection (coastal populations)·oviparous
The spiny-footed lizard, Acanthodactylus erythrurus, is a medium-sized lizard known for the comb-like spines on its hind toes. Endemic to northwestern Africa and the Iberian Peninsula, it is recognized as one of the fastest lizards in the Lacertidae family. This species inhabits dry, sparsely vegetated areas with loose soil and low scrub, often in mountainous regions, and is primarily active during daylight hours.
Key Facts
- ›Acanthodactylus erythrurus is known for the distinctive spines on its hind toes, resembling a comb.
- ›It is considered one of the fastest members of the Lacertidae family.
- ›The species has a highly variable coloration and spot pattern, leading to past classifications as separate species.
- ›Males and females exhibit red coloration on their tails and hind legs, which can change intensity during the mating season and may play a role in communication and mate selection.
- ›It is oviparous, laying 2 to 5 eggs per clutch.
- ›The spiny-footed lizard is found in northwestern Africa and the Iberian Peninsula.
Spiny-Footed Lizard, Spiny-Toed Lizard
Europe, Africa
Coastal Dunes, Plains With Scattered Scrub, Stony Hillsides, Cork Oak Forests, Mountainous Areas, Loose and Clear Coastal Soils, Low Scrub Coverage
- Medium-Sized Lizard, Up To 22.7 cm Maximum Size.
- Tail Is Approximately Two-Thirds of the Total Body Length.
- Short Snout With Defined Supraoccipital Plates Giving the Illusion of Eyebrows.
- Body Covered In Thin, Seed-Like, Keeled Scales With Protruding Midlines.
- Long Nails On Strong Hind Legs.
- Grayish-Yellow Skin Tone With Long White Lines and Irregular Dark and Yellow Spots On Legs.
- Anterior Belly Is White.
- Long Tail Is Brilliant Red On the Lateral Portions In Females.
- Coloration and Spot Patterns Are Highly Variable.
- Dorsal Scales Are Fine, Especially In the Lineomaculatus Subspecies.
Insects, Snails, Plant Matter
- Fast-Moving, Moving Low To the Ground For Agility.
- Can Detach and Regenerate Its Tail To Escape Predators.
- Defends Itself Aggressively and Bites Tenaciously If Caught.
- Males Vigorously Defend Their Territories.
- Primarily Diurnal .
- Can Be Active Year-Round In Coastal Regions, But Hibernates In Colder Inland Areas During Autumn and Winter.
- Builds Shallow, South-Facing Tunnels For Thermoregulation and Shelter.
- Females' Red Tail Coloration May Indicate Gravidity Or Pregnancy.
- Males Use Chemical and Visual Cues For Mate Choice, Preferring Females With Red Coloration.
Coastal Urbanization, Construction of Maritime Promenades, Global Warming, Climate Change
About Acanthodactylus erythrurus
Acanthodactylus erythrurus: The Spiny-Footed Lizard
The spiny-footed lizard, scientifically known as Acanthodactylus erythrurus, is a medium-sized reptile recognized for the distinctive comb-like spines adorning the toes of its hind legs. This species is a member of the Lacertidae family and is a swift runner, often considered one of the fastest within its family. Its common name directly references this unique physical characteristic.
Description and Habitat
Measuring up to approximately 22.7 cm in total length, the spiny-footed lizard possesses a strong body and a tail that constitutes about two-thirds of its overall size. Its coloration is highly variable, typically featuring a grayish-yellow base with stark white longitudinal lines and irregular dark and yellow spots, particularly on the legs. The anterior belly is usually white, and adult females often display a brilliant red on the lateral portions of their tail and hind legs. This species thrives in dry, sparsely vegetated environments with loose soil, such as coastal dunes, plains with scattered scrub, and stony hillsides. While often found in mountainous areas, it avoids agricultural landscapes.
Behavior and Reproduction
The spiny-footed lizard is primarily diurnal, meaning it is most active during daylight hours. It is known for its agility and speed, often moving low to the ground. If threatened, it can detach and regenerate its tail as a defense mechanism. During colder months outside of coastal regions, the lizard enters a period of hibernation, often seeking refuge in shallow, self-dug tunnels. Its diet comprises a variety of insects, snails, and plant matter. Reproduction occurs during spring, with mating typically taking place between May and June. Females lay clutches of 2 to 5 eggs, which hatch within 2 to 5 months.
Significance of Coloration
Research has explored the functional significance of the red coloration observed in spiny-footed lizards. This color, particularly prominent in adult females, is hypothesized to play a role in reproduction and mate selection. Studies suggest it can signal reproductive readiness to males and may influence courtship preferences. Additionally, red coloration in juvenile lizards has been investigated for its potential to reduce aggression from adults, supporting the aggression avoidance hypothesis.
Conservation Concerns
Coastal populations of the spiny-footed lizard are considered under special protection due to significant threats to their habitat. Habitat deterioration is driven by coastal urbanization and infrastructure development. Furthermore, the species is vulnerable to the impacts of global warming and climate change, which can degrade the specific environmental conditions it relies upon for survival. These factors highlight the need for conservation efforts to protect this unique lizard species and its habitats.
Source: Wikipedia ↗
Frequently Asked Questions
What is the common name for Acanthodactylus erythrurus and why?
The common name for Acanthodactylus erythrurus is the spiny-footed lizard. This name refers to the prominent spines that are arranged in a comb-like fashion on the toes of its hind legs.
Where is the spiny-footed lizard found?
The spiny-footed lizard is native to northwestern Africa, including countries like Algeria, Morocco, and Tunisia, as well as parts of the Iberian Peninsula, specifically Gibraltar, Portugal, and Spain.
What does the spiny-footed lizard eat?
The diet of the spiny-footed lizard is varied, consisting of insects such as ants, bugs, and beetles, as well as snails and plant matter like flower petals and stems.
How does the spiny-footed lizard reproduce?
This species is oviparous, meaning it lays eggs. Between June and August, females lay clutches of 2 to 5 eggs, which typically hatch 2 to 5 months later.
What are the primary threats to the spiny-footed lizard?
The spiny-footed lizard faces significant threats from habitat deterioration due to coastal urbanization and the construction of maritime promenades. Global warming and climate change also pose risks to its environment, which it heavily relies upon.
Why is the red coloration in spiny-footed lizards significant?
The red coloration on the hind legs and tail of adult females is thought to have a mating-related function and can signal reproductive status. Studies suggest it influences male mate choice and may indicate sexual maturity or a pre-ovulatory state. Red coloration in juveniles has also been hypothesized to reduce adult aggression.
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