Tree frog

[shù wā]

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Tree frog, anuran in the family Ranaidae 1 genus, with mostly slender and flat bodies, long hind limbs, large suckers, and well-developed webs between the fingers and toes, which can be used to glide in the air. There are 10 to 12 genera and 400 to 500 species in the family Frogidae, which are widely distributed in Asia and the It can also be seen in tropical and subtropical areas of Africa and on the island of Madagascar. The most famous tree frogs are several flying frogs in Asia, such as Rhacophorus nigropalmatus and R. reiwardti.

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Chinese name: Tree Frog

Kingdom: Animal Kingdom< /p>

Phylum: Chordata

Class: Amphibia

Order: Anura

Family: Frogidae

Distribution area: Mainly distributed in tropical and subtropical areas of Asia and Africa

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Morphological characteristics

1 genus of the family Anuridae , smaller in size, mostly slender and flat, with long hind limbs and large suckers. There are well-developed webs between the fingers and toes. There is intermediary cartilage (ke sign) between the joints of the two distal fingers (toes), which is suitable for arboreal life. There are many species, distributed in subtropical and tropical humid areas in eastern and southeastern Asia. There are 29 species in China. The spotted-legged tree frog is the most widely distributed, ranging from southern Gansu in the north to southern Tibet in the south.

Life habits

A variety of tree frogs inhabit moist broad-leaved forests and their edges.

Tree frogs

The back of the body is mostly green or varies depending on the environment. Reproductive habits reflect an arboreal lifestyle, with most species laying eggs on branches and leaves that extend above ponds. For example, Emei tree frogs, in the evening after a rain in April to May, the male and female climb up the tree hugging each other and choose the branches and leaves that are vertical to the pool to lay eggs. When the female lays eggs, she first discharges the liquid and uses the left and right tibiotarsal joints to stir each other to form foam. The eggs are laid in the foam; the male excretes semen to fertilize the eggs. Repeat this for 2 to 3 hours. After laying the eggs, the male leaves immediately, and the female wraps the follicles with leaves with her hind limbs before leaving. Follicles are milky white. The foam liquefies before and after incubation. Through movement or being washed by rain, the tadpoles reach the pool under the tree, where they continue to grow and develop and complete their metamorphosis.

The spotted-legged tree frog lives in the grass next to ponds or rice fields, and its follicles are laid in the grass or floating on the water. Hainan tree frogs live near streams and lay their eggs in puddles by streams without follicles. This species is the only one among Chinese tree frogs that does not produce follicles. Sri Lanka's small tympanic tree frog lays about 20 eggs on land without follicles. Female frogs have the habit of protecting their eggs and develop directly into young frogs.

The black-webbed tree frog is highly arboreal, with an extremely flat body, slender crotch, well-developed webs between fingers and toes, and skin folds on the anus and the outside of the front and rear limbs, which increases the body surface area. When gliding from a high place to a low place, the webs spread out to slow down the speed of landing. The black-palmed tree frog can parabolically glide from a height of 4 to 5 meters to the ground, so it is also known as the flying frog.