| Sceloporus merriami annulatus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Iguania |
| Family: | Phrynosomatidae |
| Genus: | Sceloporus |
| Species: | |
| Subspecies: | S. m. annulatus |
| Trinomial name | |
| Sceloporus merriami annulatus H.M. Smith, 1937 | |
Sceloporus merriami annulatus, commonly known as the Big Bend canyon lizard, is a subspecies of the canyon lizard, and is endemic to southwestern Texas and adjacent northeastern Mexico. [1]
The subspecific name, annulatus, comes from the Latin noun annulus, meaning "ring", and refers to the banded subcaudal surface. This banding is one of the key characteristics to differentiate this subspecies from the nominotypical subspecies, Sceloporus merriami merriami . [1]
S. m. annulatus is native to a fairly narrow range from the Big Bend region of the US state of Texas, to eastern Coahuila in Mexico. [1]
The holotype was collected by Edward Harrison Taylor and J.S. Wright in August 1931 in the Chisos Mountains of Brewster County, Texas. [1]
The Big Bend canyon lizard is a medium-sized lizard, growing from 4.5 to 6.25 inches (11.5–16 cm) in total length. Its coloration varies with its choice of habitat, varying from grey to reddish, with two rows of dark spots down each side of the back and a dark line on the shoulder region. It has a fairly large head for its body size, and a dewlap which is larger in males than females. Males also have distinct blue patches on either side of the belly.
In this subspecies there are fewer than 53 dorsal scales from the interparietal scale to the base of the tail. [2]
All canyon lizards are diurnal and insectivorous. Their primary choice of habitat is rocky, unvegetated canyon lands with numerous crevices to hide in, and ledges to bask on.
They are oviparous.
Lampropeltis triangulum, commonly known as the milk snake or milksnake, is a species of kingsnake; 24 subspecies are currently recognized. Lampropeltis elapsoides, the scarlet kingsnake, was formerly classified as a 25th subspecies, but is now recognized as a distinct species. The subspecies have strikingly different appearances, and many of them have their own common names. Some authorities suggest that this species could be split into several separate species. They are not venomous to humans.
Spiny lizards is a common name for the genus Sceloporus in the family Phrynosomatidae. The genus is endemic to North America and Central America. This genus includes some of the most commonly seen lizards in the United States.
The western fence lizard is a common lizard of Arizona, New Mexico, California, Idaho, Nevada, Oregon, Utah, Washington, Northern Mexico, and the surrounding area. As the ventral abdomen of an adult is characteristically blue, it is also known as the blue-belly.
The common collared lizard, also commonly called eastern collared lizard, Oklahoma collared lizard, yellow-headed collared lizard, and collared lizard, is a North American species of lizard in the family Crotaphytidae. The common name "collared lizard" comes from the lizard's distinct coloration, which includes bands of black around the neck and shoulders that look like a collar. Males can be very colorful, with blue green bodies, yellow stripes on the tail and back, and yellow orange throats. There are five recognized subspecies.
Sceloporus poinsettii, the crevice spiny lizard, is a species of small, phrynosomatid lizard.
The sagebrush lizard, or sagebrush swift, is a common species of phrynosomatid lizard found at mid to high altitudes in the western United States of America. It belongs to the genus Sceloporus in the Phrynosomatidae family of reptiles. Named after the sagebrush plants near which it is commonly found, the sagebrush lizard has keeled and spiny scales running along its dorsal surface.
Sceloporus malachiticus, the emerald swift or green spiny lizard, is a species of small lizard in the Phrynosomatidae family, native to Central America.
Sceloporus grammicus is a species of lizard from Mexico and the southern United States. It is sometimes referred to as the mesquite lizard or graphic spiny lizard.
Sceloporus merriami, commonly known as the canyon lizard, is a species of lizard in the family Phrynosomatidae. The species is native to the south-western United States and northern Mexico.
Sceloporus merriami longipunctatus, commonly known as the Presidio canyon lizard, is a subspecies of the canyon lizard, and is endemic to southwestern Texas and northeastern Mexico. It is unknown if it interbreeds with the other subspecies of canyon lizard found in the same region, but it is likely.
Nelson's milksnake is a subspecies of king snake that is found in Mexico from southern Guanajuato and central Jalisco to the Pacific Coast. It is also found on the narrow plains of northwestern Michoacán and on the Tres Marias Islands. The range of this snake appears to be tied to the proximity of watercourses, including ones utilized for irrigation and agriculture. It is a subspecies of the milksnake, Lampropeltis triangulum. It is similar in size to other king snakes, averaging 42 inches (110 cm) long, and like them, is nonvenomous.
Kenneth Lee Williams was an American herpetologist and author of books on the subject of snake biology and classification. Williams retired from teaching in Northwestern State University's biology department and received emeritus status in 2001. Williams is considered an authority on the milk snake and the herpetology of the Honduran Cloud Forest.
Lee Fitzgerald is Professor of Zoology and Faculty Curator of Amphibians and Reptiles in the Department of Wildlife and Fisheries Sciences at Texas A&M University. His biological specialty is the evolutionary ecology and conservation biology of amphibians and reptiles (herpetology). Fitzgerald is a former editor of Herpetological Monographs.
Slevin's bunchgrass lizard is a species of lizard in the family Phrynosomatidae. The species is indigenous to the southwestern United States and adjacent northern Mexico.
Sceloporus jarrovii, also known commonly as the mountain spiny lizard and Yarrow's spiny lizard, is a species of lizard in the family Phrynosomatidae. The species is native to the southwestern United States and northern Mexico. There are two recognized subspecies.
Sceloporus virgatus, commonly known as the striped plateau lizard, is a species of lizard within the genus Sceloporus. This genus is known for the signaling modalities that it uses and exhibits, including visual motion and chemical signals that aid in identifying their territories as well as color that indicates aggression. The striped plateau lizard originates from the northern Sierra Madre Occidental and is relatively small in size, measuring less than 72 mm (2.8 in) in length.
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