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The San Diego horned lizard or Blainville's horned lizard (Phrynosoma blainvillii) is a species of phrynosomatid lizard native to southern and central California in the United States and northern Baja California in Mexico.[3]
Described as a distinct species by John Edward Gray in 1839 (being named after Henri Marie Ducrotay de Blainville), it was later reclassified as a subspecies of the coast horned lizard (P. coronatum) in 1933. However, studies by Adam Leaché in 2006 and 2009 found sufficient genetic evidence to again classify P. blainvillii as a distinct species. In 2021, Gunther Köhler again reclassified blainvillii as a subspecies of P. coronatum, although the Reptile Database has not followed this.[3][4]
The San Diego Horned Lizard or the Blainville's Horned Lizard (Phrynosoma blainvillii) is a flat bodied lizard with long spiky horns located on the top and side of its head and has smaller spikes throughout its body and tail.[5]
The length of an adult size lizard can range from 2.5 inches to 4.5 inches measure from the tip of its snout to its bottom just before where the tail starts. They are either red, brown, yellow or gray in color and have several black spots on their back and neck.[5]
This species ranges from the Central Valley of California south through southern California to northern Baja California.[3]
They range from Baja California, Sierra Nevada, Bay Area, and Shasta Reservoir.[6]
These lizards are usually found to habitat near mountains in areas that are sandy, with low vegetation and near ant hills. [6]
Their first defensive strategy to avoid predators is to remain still, using their body color to blend in with their surroundings. If this strategy fails, they will attempt to hide in undergrowth or cover themselves in sand. If this fails, they will try other defensive tactics such as hissing, biting, or using the horns on their heads and body as weapons. If they are out of defensive options they can shoot blood out of their eyes to scare off predators.[7]
Their diet is mostly Harvester ants but they do eat spiders, beetles, termites, and other insects.[8]
In Southern California, the San Diego horned lizard's reproductive period ranges from early March to June.[9]
Each year the female Blainville's horned lizard can lay about 6-21 eggs in a year. A few months after they are laid in August-September they begin to hatch.
The females will lay their eggs in the Santa Monica and Simi Hills area.[10]
The difference between males and females is that the female lizards are bigger than the males. The males also have bigger horns on the base of their tails and have noticeable pores on the interior of their hind legs. [11]
The San Diego horned lizard is no longer present in many sections of Southern California due to urbanization, and other types of habitat loss.[9]
The population of horned lizards are declining because of habitat loss or degradation, hunting or capturing by humans and an increase of invasive species of Argentine ants.[12]
The lizard’s population was also impacted by the curio trade from 1890-1910, where it was estimated that 115,000 horned lizards in California were killed stuffed and sold as souvenirs.[13]
These lizards are vulnerable to a wide range of predators such as Badgers, Foxes, Coyotes, house pets, Greater Roadrunner, Loggerhead Shrike, American Kestrel, Burrowing Owl, and the Northern Pacific Rattlesnake.[14]
The San Diego horned lizard or Blainville's horned lizard (Phrynosoma blainvillii) is a species of phrynosomatid lizard native to southern and central California in the United States and northern Baja California in Mexico.
El lagarto cornudo del noroeste o lagarto cornudo de San Diego (Phrynosoma blainvillii) es una especie de reptil de la familia de los lagartos cornudos (Phrynosomatidae). Es nativa de Baja California en México y del sur de California en Estados Unidos. Mide alrededor de 11 cm sin contar la cola.[1] Los cuernos de la cabeza son de tonos rojizos y marrones.
Datos: Q5314623
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Especies: Phrynosoma blainvillii
El lagarto cornudo del noroeste o lagarto cornudo de San Diego (Phrynosoma blainvillii) es una especie de reptil de la familia de los lagartos cornudos (Phrynosomatidae). Es nativa de Baja California en México y del sur de California en Estados Unidos. Mide alrededor de 11 cm sin contar la cola. Los cuernos de la cabeza son de tonos rojizos y marrones.
Phrynosoma blainvillii Phrynosoma generoko animalia da. Narrastien barruko Phrynosomatidae familian sailkatuta dago.
Phrynosoma blainvillii Phrynosoma generoko animalia da. Narrastien barruko Phrynosomatidae familian sailkatuta dago.
Phrynosoma blainvillii est une espèce de sauriens de la famille des Phrynosomatidae[1].
Cette espèce se rencontre[1] :
Cette espèce est nommée en l'honneur d'Henri-Marie Ducrotay de Blainville[2].
Phrynosoma blainvillii est une espèce de sauriens de la famille des Phrynosomatidae.
Kỳ nhông sừng bãi biển[1] (danh pháp hai phần: Phrynosoma blainvillii) là một loài thằn lằn trong họ Phrynosomatidae. Loài này được Gray mô tả khoa học đầu tiên năm 1839.[2]
Bài viết liên quan đến bộ bò sát có vảy này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Kỳ nhông sừng bãi biển (danh pháp hai phần: Phrynosoma blainvillii) là một loài thằn lằn trong họ Phrynosomatidae. Loài này được Gray mô tả khoa học đầu tiên năm 1839.
