Costa Rica Species
Ameiva festiva
AnimaliaIUCN LCIn Progress Recent Sighting

Ameiva festiva

Middle American Ameiva

Lichtenstein & Martens, 1856

Detailed Texts Multi-lang
An elegant and slender reptile with a characteristic dorsal coloration: a light vertebral band that contrasts with dark flanks often adorned with bluish spots or stripes. Its head is pointed and aerodynamic, ideal for navigating at high speed through the dense tropical leaf litter.

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Last modified by

Julia Trouin

Taxonomy

PhylumChordata
ClassReptilia
OrderSquamata
FamilyTeiidae
GenusAmeiva
Taxonomic AuthorityLichtenstein & Martens, 1856

Ecology & Status

Origin

Native

Population Trend

Stable

Breeding Season

--

Trophic Role

Insectivore

Recent Sightings

Yes

Habitat Summary Multi-lang

Inhabits the understory of humid forests, gallery forests, and disturbed areas with vegetation cover. It prefers areas with filtered sunlight reaching the ground for thermoregulation before beginning its foraging activity.

Behaviour Multi-lang

Active during the day, the *Ameiva festiva* spends almost all its time on the ground searching for prey. It is highly territorial during the mating season, where males perform color displays and chases to defend their domains.

Social Activity Multi-lang

Solitary, except during the breeding season. It does not interact socially in a complex way, its encounters being limited to territory defense or mating rituals.

Feeding Guild Multi-lang

Active forager. Uses smell to track prey in leaf litter and then digs with its forelimbs to extract hidden insects.

Trophic Chain Details Multi-lang

Generalist secondary consumer. Feeds on a wide variety of invertebrates, including grasshoppers, larvae, spiders, and termites. It plays a fundamental role in regulating arthropod populations on the forest floor.

Reproductive Behaviour Multi-lang

Oviparous species. The female lays its eggs in nests excavated in humid and protected places under the ground or logs. There is no parental care.

Physical Measures

Length (cm)

15.0 - 25.0 cm

Weight (Grams)

15 g - 45 g

Offspring per cycle3 - 8
Sexual DimorphismYes

Lifespan

Sexual Maturity

1 - 2 Years

Gestation / Incubation

2 - 3

Lifespan Estimated
Males4 - 7 Years
Females4 - 7 Years

Sexual Dimorphism

Males Multi-lang

The male is remarkably more colorful, featuring lateral bands of intense electric blue and a belly often with bluish tones. Its head is more robust compared to the female.

Females Multi-lang

The female has more muted colors, with brown and ocher tones predominating, which provides better camouflage among the forest floor while carrying out its activities of searching for nesting sites.

Evolutionary Adaptations Multi-lang

Escape Speed: The *Ameiva festiva* is famous for its ability to run in extremely fast bursts using its strong hind limbs, making it a difficult target for most terrestrial predators.
Sensory Bifid Tongue: Like other teiids, it uses its deeply bifid tongue to collect chemical particles from the air and soil, processing them in the vomeronasal organ to locate prey hidden in the leaf litter.

Main Threats Multi-lang

Habitat Loss: Massive deforestation in the Central American corridor reduces the forest patches necessary for their thermoregulation and foraging.

Interesting Facts Multi-lang

Despite their restless nature during the day, they are experts at finding crevices and tunnels in the ground where they spend the night in a state of deep lethargy.