Aspidoscelis tesselata
Parthenogenic (asexual reproduction)
The checkered whiptail (Aspidoscelis tesselatus) is a parthenogenic lizard species native to the southwestern United States and northern Mexico. Characterized by its slender body, long tail, and variable coloration of brown or black blotching on a pale yellow or white base, it is an energetic and fast-moving reptile. It inhabits semi-arid, rocky canyon and hilled regions.
Key Facts
- ›Originated from hybridization of other Aspidoscelis species.
- ›Known to be a parthenogenic species, reproducing without fertilization.
- ›Diurnal and insectivorous, feeding on insects.
- ›Found in semi-arid, rocky habitats like canyon lands and hilled regions.
- ›Lays up to eight unfertilized eggs in MID-summer, hatching in six to eight weeks.
- ›Possesses variable coloration with brown or black patterns on a pale base.
Common Checkered Whiptail
Southwestern United States, Northern Mexico
Semi-Arid, Rocky Habitats, Canyon Lands, Hilled Regions
- Grows To About 4 Inches In Length.
- Slender Bodied With A Long Tail.
- Pattern and Base Coloration Varies Widely.
- Features Brown Or Black Blotching, Checkering, Or Striping On A Pale Yellow Or White Base Color.
- Rear Legs Often Have Dark Spotting.
- Underside Is Usually White With Dark Flecking On the Throat Area.
Insects
Diurnal, Insectivorous, Wary, Energetic, and Fast Moving, Dart For Cover If Approached
About Aspidoscelis tesselata
The Checkered Whiptail (Aspidoscelis tesselatus)
The checkered whiptail, scientifically known as Aspidoscelis tesselatus, is a fascinating lizard species recognized for its unique reproductive strategy and distinct appearance. This species is native to the arid and semi-arid regions of the southwestern United States, including Colorado, Texas, and New Mexico, and extends into northern Mexico in Chihuahua and Coahuila.
Origins and Genetics
Many sources suggest that the checkered whiptail originated through hybridization events involving other whiptail species, specifically Aspidoscelis marmoratus, Aspidoscelis septemvittatus, and possibly Aspidoscelis sexlineatus. It is a diploid species and is notable for being one of many lizard species known to be parthenogenic. This means that the females can reproduce without fertilization, a characteristic shared by other unisexual vertebrate organisms that also arose from hybridization. Genetic analysis identifies Aspidoscelis gularis as a paternal ancestor and Aspidoscelis marmoratus as a maternal ancestor in its lineage.
Physical Characteristics
The checkered whiptail typically grows to about 4 inches in length. Its body is slender, complemented by a long tail. The coloration and pattern of this lizard are highly variable, often presenting as brown or black blotching, checkering, or striping against a pale yellow or white base color. Distinct dark spotting is frequently observed on their rear legs, and their undersides are usually white, with dark flecking visible on the throat area.
Habitat and Behavior
This diurnal species is found in semi-arid, rocky environments, commonly inhabiting canyon lands or hilled regions. Checkered whiptails are known for their wary, energetic, and fast-moving nature; they are quick to dart for cover when approached. As insectivores, they actively hunt insects within their preferred habitats.
Reproduction
Due to its parthenogenic nature, the checkered whiptail reproduces asexually. Females lay up to eight unfertilized eggs in mid-summer. These eggs typically hatch within a period of six to eight weeks, ensuring the continuation of the species without the need for male fertilization.
Source: Wikipedia ↗
Frequently Asked Questions
What is the scientific name for the checkered whiptail?
The scientific name for the checkered whiptail is Aspidoscelis tesselatus. It is sometimes referred to as the common checkered whiptail to distinguish it from other similarly named species.
Where are checkered whiptails found?
Checkered whiptails are found in the southwestern United States, specifically in Colorado, Texas, and New Mexico. They also inhabit northern Mexico in the states of Chihuahua and Coahuila.
What does a checkered whiptail look like?
The checkered whiptail is about 4 inches in length with a slender body and a long tail. Its coloration is highly variable, featuring brown or black blotching, checkering, or striping on a pale yellow or white background. They often have dark spotting on their rear legs and white undersides with dark flecking on the throat.
What do checkered whiptails eat?
Checkered whiptails are insectivorous, meaning their diet consists primarily of insects. They are active hunters in their natural habitat.
How do checkered whiptails reproduce?
Checkered whiptails are a parthenogenic species, which means they reproduce asexually. Females lay up to eight unfertilized eggs in mid-summer, which typically hatch within six to eight weeks.
What kind of habitat do checkered whiptails prefer?
These lizards prefer semi-arid, rocky habitats. They are commonly found in canyon lands or hilled regions, where they can dart for cover when approached.
Related Lizards
Black spiny-tailed iguana
The black spiny-tailed iguana (Ctenosaura similis) is a large iguanid lizard native to Mexico and Central America, known for the distinctive black, keeled spines on its tail. It inhabits grasslands and forests, and is an excellent climber, capable of remarkable speeds. While primarily herbivorous, it will opportunistically consume small animals and eggs.
Ctenosaura pectinata
The western spiny-tailed iguana, scientifically known as Ctenosaura pectinata, is a moderately large lizard native to western Mexico. This species is characterized by its distinctive keeled scales on its tail, a crest of spines down its back, and variable coloration ranging from brown to grey-brown, with a yellowish underside. While primarily herbivorous as adults, juveniles consume insects, and they are known for their social behavior and adaptation to rocky habitats with nearby trees.
Gray's spiny-tailed iguana
Gray's spiny-tailed iguana, also known as the black iguana, is a sizable iguanid lizard native to Mexico and Central America. It is characterized by its distinctive black, keeled scales on its tail and a crest of spines running down its back. Primarily herbivorous, these diurnal lizards inhabit rocky areas with nearby trees and are known for their remarkable speed.