• Source: Holbrookia

Holbrookia is a genus of earless lizards, known commonly as the lesser earless lizards, in the family Phrynosomatidae. The genus contains six recognized species, which are found throughout the Southwestern and Central United States and northern Mexico. They are characterized by having no external ear openings, presumably to prevent soil from entering their bodies when they are digging.




Etymology


The generic name, Holbrookia, is in honor of American zoologist John Edwards Holbrook.




Description


Lesser earless lizards grow to about 2.0–2.5 in (50–65 mm) snout-to-vent length (SVL), plus a tail of 3–4 in (75–100 mm). They are typically grey or tan in color, with black blotching. The males usually have blue patches on either side of their bellies, whereas the females do not. Females often change to have bright orange patches when gravid.




Behavior


Holbrookia species are diurnal, basking lizards. They spend the vast majority of their time sunning on rocks, even in the heat of the day, until the surface temperature reaches around 104 °F (40 °C), when they will retreat to a rock crevice or burrow.




Diet


Lesser earless lizards are insectivorous.




Species


The genus Holbrookia contains six species which are recognized as being valid.




Geographic range


Earless lizards (genera Cophosaurus and Holbrookia) are found in the Southwestern and Central United States, in Texas, Arizona, New Mexico, Utah, Colorado, Kansas, Oklahoma, and as far north as Nebraska, South Dakota, and Wyoming. They are also found in Mexico, in the states of Sonora, Chihuahua, Coahuila, Sinaloa, Durango, Zacatecas, San Luis Potosí, Nuevo León, Tamaulipas, and Veracruz.




See also


Genus Cophosaurus, the greater earless lizard




References






External links


Colorado Herpetological Society: Lesser earless lizard




Further reading


Girard C (1851). "On a New American Saurian Reptile". Proceedings of the American Association for the Advancement of Science, New Haven 4: 200–202. (Holbrookia, new genus, pp. 200–201; H. maculata, new species, pp. 201–202).

Kata Kunci Pencarian:

• Phrynosomatidae
• Holbrookia
• Holbrookia maculata
• Holbrookia elegans
• Greater earless lizard
• Phrynosomatidae
• Holbrookia subcaudalis
• Earless lizard
• Necrophilia
• Holbrookia propinqua
• Holbrookia lacerata