| Granite night lizard | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Family: | Xantusiidae |
| Genus: | Xantusia |
| Species: | X. henshawi |
| Binomial name | |
| Xantusia henshawi Stejneger, 1893 | |
| Synonyms [2] | |
| |
The granite night lizard (Xantusia henshawi), also known commonly as Henshaw's night lizard, is a species of lizard in the family Xantusiidae. The species is endemic to North America. [2]
The specific name, henshawi, is in honor of American naturalist Henry Wetherbee Henshaw. [3]
X. henshawi is found in Mexico in the Mexican state of Baja California, and also in the United States in adjacent southern California. [2]
X. henshawi is flat-bodied with a broad, flat head and a soft skin. It has rounded, dark dorsal spots on a pale yellow or cream background. Its scales are granular on its dorsum, but large and squarish on the ventral surface. This lizard has large eyes with vertical pupils, and it lacks eyelids. [4]
The granite night lizard is often found on rocky slopes with large exfoliating boulders and abundant crevices, but is occasionally found in coastal sage scrub and chaparral without boulders. It is active in crevices during the day, but moves on the surface at night. [4]
Xantusia () is one of three genera of night lizards. Species of Xantusia are small to medium-sized, viviparous (live-bearing) lizards found in the U.S. Southwest and in northern Mexico. These lizards display morphological adaptations to specific microhabitats. They occupy rock crevices and decaying plants. Rock dwellers generally have brighter coloration, longer limbs and digits, and larger size than plant dwellers, which are generally duller, smaller, and have shorter limbs.
Species of the genus Xantusia are remarkably disjunct, with populations scattered throughout the deserts and mountains of the far western borderlands with only a handful of recorded cases of interspecific allopatry. The genus contains at least seven distinct cases of morphological convergence to the rock dwelling ecomorph in Arizona, California, Baja California, and Central Mexico.
The island night lizard is a species of night lizard native to three of the Channel Islands of California: San Nicolas Island, Santa Barbara Island, and San Clemente Island. A small number of island night lizards also live on Sutil Island, near Santa Barbara Island.
Night lizards are a group of small scincomorph lizards, averaging from less than 4 cm (1.6 in) to over 12 cm (4.7 in) snout–vent length. Most species are viviparous (live-bearing), with the exception of those in the genus Cricosaura. The family has only three living genera, with approximately 34 living species. The genera are divided by geographic range: Xantusia in southwestern North America and Baja California, Cricosaura in Cuba, and Lepidophyma, the most populous night lizard genus, in Central America. Three fossil genera are also known: Catactegenys, Palepidophyma, Palaeoxantusia.
The desert night lizard is a night lizard native to the Southern California Eastern Sierra and the San Gabriel Mountains into Baja California, southern Nevada, southwestern Utah and extreme western areas of Arizona.
The northern alligator lizard is a species of medium-sized lizard in the family Anguidae. The species is endemic to the North American west coast.
The desert rosy boa is a species of snake in the family Boidae. The desert rosy boa is native to the American Southwest and Baja California and Sonora in Mexico. The desert rosy boa is one of four species in the boa family native to the continental United States, the other three being the coastal rosy boa and the two species of rubber boas (Charina).
The western whiptail is a species of lizard in the family Teiidae. The species is found throughout most of the southwestern United States and northern Mexico. Most of its populations appear stable, and it is not listed as endangered in any of the states comprising its range. It lives in a wide variety of habitats, including deserts and semiarid shrubland, usually in areas with sparse vegetation; it also may be found in woodland, open dry forest, and riparian growth. It lives in burrows. Major differences between this species and the checkered whiptail include the lack of enlarged scales anterior to the gular fold and the presence of enlarged postantebrachial scales. It was previously known as Cnemidophorus tigris, until phylogenetic analyses concluded that the genus Cnemidophorus was polyphyletic. Since it does not migrate, a number of forms have developed in different regions, several of which have been given subspecific names – for example the California whiptail, Aspidoscelis tigris munda.
The granite spiny lizard is a species of lizard in the family Phrynosomatidae.
Petrosaurus mearnsi, also called the banded rock lizard, is a species of lizard in the family Phrynosomatidae. The species is native to western North America.
The Baja California leopard lizard, also known commonly as Cope's leopard lizard, is a species of lizard in the family Crotaphytidae. The species is endemic to Baja California and adjacent southern California.
The orange-throated whiptail is a species of lizard in the family Teiidae. The species was previously placed in the genus Cnemidophorus. Three subspecies are recognized as being valid, including the nominotypical subspecies.
The sandstone night lizard is a species of night lizard. Prior to 2005, it was considered a subspecies of the granite night lizard, Xantusia henshawi. The physical difference is that the sandstone night lizard has lighter coloration.
The Arizona night lizard is a species of small smooth-skinned gray-brown lizards with dark spots that sometimes form partial lines down the back. The lizard has a slightly flattened head. The scales of the underside and tail are larger than those of the upper side. The lizard grows to a length of 6 to 10 cm.
Bezy's night lizard is a species of lizard in the family Xantusiidae. The species is endemic to Arizona.
The western banded gecko is a species of lizard in the family Eublepharidae. The species is native to the southwestern United States and adjacent northwestern Mexico. Five subspecies are recognized.
The California whipsnake, also known as the striped racer, is a colubrid snake found in habitats of the coast, desert, and foothills of California.
The long-nosed leopard lizard is a species of relatively large North American lizard in the family Crotaphytidae. Gambelia wislizenii ranges in snout-to-vent length (SVL) from 8.3 to 14.6 cm. It has a large head, a long nose, and a long round tail that can be longer than its body. It is closely related to the blunt-nosed leopard lizard, which closely resembles the long-nosed leopard lizard in body proportions, but has a conspicuously blunt snout. The species G. wislizenii, once considered part of the genus Crotaphytus, is under moderate pressure because of habitat destruction but is categorized as "least concern".
The peninsula leaf-toed gecko is a medium-sized gecko. It is found in southern California (USA) and Baja California (Mexico), including many islands in Gulf of California as well as Islas Magdalena and Santa Margarita off the west coast of Baja California.
The bolsón night lizard is a species of night lizard in the family Xantusiidae. The species, which was originally described by Robert G. Webb in 1970, is endemic to the state of Durango in Mexico. Not much is known about the lizard at present, as it appears to be simultaneously rare and rather secretive in nature.
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