Amphisbaena carli, commonly known as Carl's Worm Lizard, is a species of amphisbaenian (worm lizard) in the family Amphisbaenidae. This limbless reptile is known for its fossorial (burrowing) lifestyle and is endemic to Brazil.
Taxonomy and Etymology
- Kingdom: Animalia
- Phylum: Chordata
- Class: Reptilia
- Order: Squamata
- Family: Amphisbaenidae
- Genus: Amphisbaena
- Species: A. carli (Gans, 1965)
The specific name, carli, honors H.J. Carl, who collected the type specimen.
Description
Like other members of the genus Amphisbaena, A. carli possesses a highly specialized body plan adapted for a subterranean existence. It is characterized by:
- Limbless, elongated body: Resembling a large worm, with a uniform diameter along most of its length.
- Small, robust head: Often blunt or shovel-shaped, used for burrowing through soil. The eyes are usually vestigial and covered by scales, as vision is of little use underground.
- Scalation: The body is covered in ring-like segments of scales (annuli), which aid in movement through tunnels by providing traction.
- Coloration: Typically brownish or pinkish, sometimes with lighter ventral surfaces, which helps it blend with soil.
- Autotomy: Like many lizards, Amphisbaena carli can shed its tail as a defense mechanism (autotomy) to escape predators.
Habitat and Distribution
Amphisbaena carli is native to Brazil, primarily found in the states of Goiás and Minas Gerais. It inhabits various terrestrial environments, preferring areas with loose soil, leaf litter, or sandy substrates where it can easily burrow. Its habitat often includes Cerrado biomes, a type of tropical savanna characterized by grasslands, scrublands, and scattered trees.
Behavior and Ecology
- Fossorial Lifestyle: A. carli spends almost its entire life underground, constructing tunnels and chambers using its head and powerful body movements. This protects it from predators and extreme temperatures.
- Diet: As an opportunistic predator, its diet consists mainly of invertebrates found in the soil, such as ants, termites, beetle larvae, and other small arthropods.
- Reproduction: Information on the specific reproductive habits of A. carli is limited, but like many amphisbaenians, it is believed to be oviparous, laying eggs in its underground burrows.
Conservation Status
According to the IUCN Red List of Threatened Species, Amphisbaena carli is currently listed as Least Concern (LC). This classification indicates that the species is widespread and its population is stable, with no immediate significant threats identified. However, habitat degradation due to agriculture, urbanization, and deforestation in its native range could pose future risks.
References
- Gans, C. (1965). Notes on amphisbaenids (Amphisbaenia, Reptilia) XI. A redefinition of the genus Amphisbaena Linnaeus. Bulletin of the American Museum of Natural History, 128: 129–218.
- IUCN Red List of Threatened Species. (Accessed through relevant online databases for current status).