Lizards of the desert. Eared round head

The eared roundhead is a resident of the desert, andThis lizard got its name because of two large leather folds located in the corners of the mouth. They resemble large ears with a fringed fringe at the edges.

eared roundhead

Appearance

Eared round head (photo above)is the largest representative of the genus of the round head. The length of her body reaches 12 cm, and the tail - 15 cm. Her head, trunk and tail are flattened. In the corners of the mouth, as already mentioned, there is a large fold of the skin (ears). Its free edge is seated with long conical scales. The back of the head is also strewn with scales. And in general the whole body of this reptile is covered with scales: on top it is keeled, ribbed, on the sides is smaller, on the neck conical, and throat - with sparse ribs and a small point.

Coloring

Usually desert lizards have a sand color,that helps them to hide from their enemies. The round head is not an exception: her body is most often of sand color with a yellowish or flesh-pink tinge; The sides are brighter than the back. Head and trunk is decorated with camouflage coloring, which is an incorrectly outlined dark lines. They form a complex mosaic of ovals, circles and specks. The underside of the lizard is milky white. On the chest is a black speck (in females it is less bright than in males). On the throat can be a dark marble pattern. The end of the tail is coal black.

Long-eared round head Photo

Spread

Their distribution is entirely determined by the presencehowever, the habitat is limited by desert and semi-desert zones in eastern Ciscaucasia (including foothill Dagestan, eastern Chechnya and Kalmykia). The lizards we consider are also found in the south of the Astrakhan region, in Central Asia, in Kazakhstan, northwest China, Afghanistan and Iran.

Habitat

Ушастая круглоголовка – это типичный обитатель various kinds of weakly fixed and barchan sands with a rare grass and shrub vegetation. She settles on the tops of sandy embankments and on the roadsides, where she creates isolated settlements. The number of these reptiles is subject to sharp fluctuations, it significantly increases with the withdrawal of young animals. So, in the southern part of the Karakum River, on a route of two kilometers, only 18 individuals were recorded, and 98 animals were found in Dagestan, in the area of ​​the barkhana Sary-Kum. This is considered the record density of settlement of this species of lizards.

Desert Lizards Photos

Activity

Eared roundhead appears after wintering inlate March - early April. In the period of warm winters that occur in Central Asia, some individuals are already active at the end of February. In summer, the lizards of the desert (the photos offered to your attention will help to get an idea of ​​this reptile) are hidden from the hot sun in the afternoon, appearing only in the morning and evening hours. In early October, these creatures arrange themselves a winter shelter. To do this, they find inter-barchan lowlands and dig straight burrows of up to 90 cm in length, which end in small expansions in the layer of wet sand. In the summer period, young animals lurk in the burrows, and adults under bad weather, at night, or in case of danger, burrow into the sand with rapid oscillatory movements of the body. At the same time, the eared round-head seems to be pushing the sand in front of itself, which is picked up by scales on the sides and showered on its back, covering the lizard.

This kind of desert inhabitants is quite famous.due to the characteristic frightening posture. The lizard widely spreads and spreads the hind legs, raises the front part of the body and opens the mouth wide, while the mucous membrane and skin folds in the corners of the mouth become bright red. The roundhead at the same time makes a hissing sound, quickly twists and straightens the tail and jumps in the direction of the enemy. Lizards are very aggressive, and not only in the case of protection of the territory or in the mating season, but also at another time. This behavior is typical for individuals of different ages and sexes.

Reproduction

Mating at round-headed eared lasts from the endApril and early July. The first eggs are laid from mid-May to the end of June, the second laying of eggs occurs at the end of July. The female lays from 2 to 6 eggs. The youngsters appear between late July and mid-August. The size of babies is 30-40 mm. Sexual maturity occurs in the second year of life. Juveniles usually settle in colonies, and adults prefer individual plots.

what do lizards eat in the desert

What do lizards eat in the desert?

The basis of their diet are various insects. Most often it is beetles, ants, bugs, orthoptera, diptera, butterflies and spiders. Adults can eat flowers of desert plants.

Desert lizards

Round-eared ears are not the only species of reptiles that inhabit the deserts of our planet. Briefly consider some species of lizards that live in these difficult environmental conditions.

1. Круглоголовка песчаная.These lizards reach 80 mm in length (together with the tail). They have a sandy-yellow color with a thick pattern of light and dark spots and spots. The roundhead sand eats ants, termites, caterpillars, beetles, butterflies, which it often catches on the fly, bouncing in the air.

2. Круглоголовка такырная.It differs from other species in the shape of the head. In length, this lizard reaches 12 cm. The color is dark gray or brown-gray. The basis of the diet of these reptiles are insects and small invertebrates.

3. Desert iguana.The length of their body is 17-40 cm. The color may vary, but brown and gray colors prevail. The ration of an iguana consists exclusively of plant food, it can be both seeds and fruits of plants, and their stems.

desert lizards

4. Varan.It is the largest lizard in the world, its length reaches 1.5 meters, and weight - 3.5 kg. The colors of this reptile are predominantly gray tones. The lizard feeds on rodents, snakes and insects.

5. Moloch. The length of the body of this lizard reaches 22 cm.Color brown-yellow with dark spots. However, moloch may change color depending on temperature, light or physiological state. It feeds exclusively on forager ants, which it catches with the help of a sticky tongue.