New Mexico whiptail
The all-female lizard of New Mexico and Arizona.
Last updated
The official state reptile of New Mexico is a lizard that is always female. Known as the New Mexico whiptail (Aspidoscelis neomexicanus), it lives in New Mexico, Arizona, and the Mexican state of Chihuahua. This species reproduces through parthenogenesis, meaning females produce offspring without fertilization.
A New Mexico whiptail can be created in two ways: through the hybridization of a little striped whiptail (A. inornatus) and a western whiptail (A. tigris), or through parthenogenetic reproduction by an adult New Mexico whiptail. The hybridization prevents healthy males from forming, while parthenogenesis allows the all-female population to continue. This combination of interspecific hybridization and parthenogenesis is a reproductive strategy found in several whiptail lizards of the genus Aspidoscelis.
Scientific classification
- KingdomAnimalia
- PhylumChordata
- ClassReptilia
- OrderSquamata
- FamilyTeiidae
- GenusAspidoscelis
- SpeciesAspidoscelis neomexicanus
Named by Lowe & Zweifel, 1952
Sources: Wikipedia taxobox: New Mexico whiptail (CC BY-SA 4.0)
Conservation status
Least Concern (LC)
- LC▲ this species
- NT
- VU
- EN
- CR
- EW
- EX
Source: IUCN Red List assessment · GBIF copy of the Red List category
Quick Facts
- Genus
- Aspidoscelis
- Species
- neomexicanus
Facts from the source article.
Lore & Background
The New Mexico whiptail is a crossbreed of a western whiptail, which lives in the desert, and the little striped whiptail, which favors grasslands. The whiptail engages in mating behavior with other females of its own species, giving rise to the nickname 'lesbian lizards'. A common theory is that this behavior stimulates ovulation, as those that do not 'mate' do not lay eggs.
Reader's Guide
The New Mexico whiptail grows from 16.5 to 23 cm in length, and is typically overall brown or black in color with seven pale yellow stripes from head to tail. Light colored spots often occur between the stripes. They have a white or pale blue underside, with a blue or blue-green colored throat.
They are slender bodied, with a long tail that is more commonly blue-green in their infant stage, melding into the same spotted brown and yellow color as they age. Like most other whiptail lizards, the New Mexico whiptail is diurnal and insectivorous, feeding primarily on spiders and insects such as termites, beetles, grasshoppers, ants, caterpillars, moths and butterflies. They are wary, energetic, and fast moving, darting for cover if approached. They are found in a wide variety of semi-arid habitats, including grassland, rocky areas, shrubland, or mountainside woodlands.
Reproduction occurs through parthenogenesis, with up to four unfertilized eggs being laid in mid summer, and hatching approximately eight weeks later. This species is active during the day, often retreating from the heat from noon to mid-afternoon during periods of high temperatures. They hibernate but are active from mid-March through mid-October.
Also in the Codexery
More in Extant Reptiles & Amphibians
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: New Mexico whiptail (CC BY-SA 4.0).
- Conservation status: IUCN Red List assessment.
- Word definitions: the Codexery glossary, each quoted from its Wikipedia article.
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