New Mexico whiptail
An all-female lizard species that reproduces without males.
The New Mexico whiptail (Aspidoscelis neomexicanus) is a lizard species made up entirely of females, living in New Mexico, Arizona, and the Mexican state of Chihuahua. It holds the title of New Mexico’s official state reptile. This lizard is one of several species that reproduce through parthenogenesis—meaning females can produce offspring without males. Individuals can arise either from the hybridization of the little striped whiptail (A. inornatus) and the western whiptail (A. tigris), or from a New Mexico whiptail mother’s parthenogenetic reproduction. The hybridization prevents healthy males from forming, though males exist in one of the parent species. This combination of crossbreeding and parthenogenesis is a reproductive strategy seen in several whiptail lizards within the genus *Aspidoscelis*.
Adults range from 6.5 to 9.1 inches (16.5 to 23 cm) long. Their bodies are typically brown or black, marked with seven pale yellow stripes running from head to tail, often with light spots between the stripes. The underside is white or pale blue, and the throat is blue or blue-green. They have slender bodies and long tails; juveniles’ tails are more often blue-green, gradually blending into the spotted brown and yellow pattern as they age.
Like most whiptail lizards, this species is active during the day and eats insects and spiders, including termites, beetles, grasshoppers, ants, caterpillars, moths, and butterflies. They are cautious, energetic, and quick, dashing for cover when disturbed. Their habitats are varied and semi-arid, such as grasslands, rocky areas, shrublands, and mountainside woodlands. Reproduction occurs through parthenogenesis, with up to four unfertilized eggs laid in mid-summer; the eggs hatch about eight weeks later. They are diurnal but often retreat from the heat between noon and mid-afternoon during hot periods. They hibernate, staying active from mid-March to mid-October. The New Mexico whiptail is a crossbreed of the desert-dwelling western whiptail and the grassland-loving little striped whiptail. Females of this species engage in mating behavior with one another, which has earned them the nickname “lesbian lizards.” A common explanation is that this behavior stimulates ovulation—females that do not “mate” do not lay eggs.
In popular culture, the New Mexico whiptail—sometimes called the “leaping lesbian lizard”—has been embraced as a gay icon in online LGBTQ+ spaces.
- scientific_name
- Aspidoscelis neomexicanus
- length
- 6.5 to 9.1 inches (16.5 to 23 cm)
- habitat
- Semi-arid grasslands, rocky areas, shrubland, mountainside woodlands
- range
- New Mexico, Arizona (USA); Chihuahua (Mexico)
- diet
- Insects and spiders
- reproduction
- Parthenogenesis (all-female)
Lore & Background
The New Mexico whiptail is a hybrid species resulting from the crossbreeding of the little striped whiptail (A. inornatus) and the western whiptail (A. tigris). This hybridization prevents healthy males from forming, leading to an all-female population. The species reproduces through parthenogenesis, with females laying up to four unfertilized eggs in mid-summer, which hatch approximately eight weeks later.
Reader's Guide
The New Mexico whiptail is significant as a natural example of parthenogenesis in vertebrates, a reproductive strategy that allows an all-female population to persist. Its existence through interspecific hybridization and parthenogenesis is shared by several other whiptail lizards in the genus Aspidoscelis. The species has also gained cultural attention, being dubbed the 'leaping lesbian lizard' and considered a gay icon in online LGBTQ+ spaces due to its all-female makeup and observed mating behaviors between females, which are thought to stimulate ovulation. As the official state reptile of New Mexico, it represents a unique biological and cultural symbol.
Did You Know?
- The New Mexico whiptail is a female-only species that reproduces through parthenogenesis.
- It is the official state reptile of New Mexico.
- Individuals can be created through hybridization of the little striped whiptail and the western whiptail.
- Females engage in mating behavior with other females, a behavior thought to stimulate ovulation.
Frequently Asked Questions
What is the New Mexico whiptail?
It is a small lizard species (Aspidoscelis neomexicanus) native to the southwestern United States and northern Mexico, best known for being an entirely female population that never requires a male to produce offspring.
How does the New Mexico whiptail reproduce without any males?
It relies on parthenogenesis, a process in which each female independently produces genetically similar daughters with no mating or fertilization step involved.
Where can you find the New Mexico whiptail in the wild?
It inhabits semi-arid grasslands, rocky outcrops, shrubland, and mountainside woodlands across New Mexico, Arizona, and the Chihuahua region of northern Mexico.
How big is a New Mexico whiptail and what does it eat?
Adults measure roughly 6.5 to 9.1 inches (16.5–23 cm) in length and feed primarily on insects and spiders encountered in their arid habitat.
Why is the New Mexico whiptail considered notable?
Beyond its all-female parthenogenetic reproduction, it holds the distinction of being the official state reptile of New Mexico, symbolizing the state's unique desert wildlife.
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