There are a lot of varieties of crabs. Some are used in cooking, but not more than seven species. The rest live quietly in nature. All of them have different appearance, size and color.
There are huge crabs, from a meter to three in length, and there are small ones, like a beckoning crab. He is considered one of the most interesting representatives of his family.
Crab habitat
The alluring crab lives in a colony of crustaceans like him. He is very loyal to his neighbors, which cannot be said about strangers who entered his territory.
Ordinary crabs can be found anywhere, but the alluring one is found in the western side of the Atlantic Ocean and Africa. This creature is accustomed to a certain climate, warmer. Therefore, it can be found at the bottom of the Indian and Pacific Oceans. An alluring crab is also found here, you can meet it in Russia.
Description of appearance
These creatures are very small. The body reaches a size of about 2.5 cm, with claws up to 10 cm. But more often they can be found smaller. They look like ordinary crabs - a head with a breast and an abdomen, divided into segments. The alluring crab (photo below) has a durable carapace that protects it. But he still has a peculiarity - this is a very large right claw. Because of her, he moves strangely, as if luring, hence his name came from.
The length of the claw can reach the length of the entire body of the crab. The left remains the usual size. Only males have such a feature. Females have the same claws. This huge male claw has several purposes. For example, a beckoning crab scares away enemies, protects its housing and attracts females. He does everything else with the help of his left limb, for example, eats.
These crabs have a regenerative function. They are able to regrow their huge claw, if for some reason it has fallen. After a certain period of time, it will grow back, and may also increase in size relative to the one that was previously. At a time when the right claw is still small, the crab tries not to crawl out of its mink so as not to endanger itself.
The violin crab is another name for the alluring crab. During the mating season, this representative of the fauna actively begins to move his claw, which resembles playing the violin. Crabs like to be active in the evening or at night, when it is completely dark. In this case, their claw is not visible. Therefore, crustaceans begin to knock on the ground or trees with it, thereby luring the females. Thanks to such a large limb, the crab locks the entrance to its home during sleep, so that no one can climb into it.
The yellow-white-red claw stands out against the background of bright short-tailed cancer. Crabs can be gray, red or black. Having a small size, the crab becomes noticeable due to its color. It may be blue, but with such a claw, it can always protect itself.
Breeding
These representatives of the fauna are heterosexual creatures. Male genitals are located at the fifth pair of walking legs, and female - at the sixth. During the breeding season, male tubes are filled with sex cells and fertilize female holes. After that, the female forms the eggs formed on her legs and bears until hatching.
How many pairs of walking legs does the alluring crab have?
Many crustaceans have 8 pairs of limbs, the first 3 of which are leg jaws. They crab and captures its prey, also helps to move it to the mouth. The remaining 5 pairs of limbs are used for movement. The first limbs of the five are auxiliary, designed to grab food, they develop small claws. In almost all crustaceans, asymmetries of the front claws are observed.
