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- Spiders
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- Spiders
Latin spiders Araneae, Aranei. They belong to the animal kingdom, the type of arthropods, the class of arachnids. In the world there are 42 thousand modern species of spiders, about 1.1 thousand minerals. Distributed everywhere, populate almost all the continents of the globe. Obligatory predators - feed on insects, small animals, amphibians. The exception is horse spider Bagheera kiplingi, whose diet is the green part of acacia. In Russia, the former CIS countries, 2888 species live. The science of spiders is called arachnology.
What kingdom do spiders belong to?
Small creatures, which are often found in the wild, in your own house, apartment, in attics, outbuildings, remind all sorts of insects, bugs. Often spiders and insects are combined into one family due to their small size, similar lifestyle. However, in tropical countries. where arthropods up to 35 cm in size live, such associations practically do not arise.
In total there are 5 kingdoms - animals, plants, fungi, bacteria and viruses. Historically, spiders and insects belong to the same kingdom, type - animals, arthropods. Only the class or unit is different. Therefore, the question of who the spider is - an animal or an insect is fundamentally wrong. The animal is the kingdom, the insects are the class.
On a note!
Since everyone has long been accustomed to the fact that insects are insects, and animals are full-fledged mammals, there was a confusion in concepts in ordinary people. Why the spider stands apart is explained by its unusual way of life, its small size. In order not to seem uneducated, you need to clearly understand that a spider is not an insect.
What class do spiders belong to?
In this case, confusion in concepts does not arise, since the class has a consonant name - arachnids. In total, 42 thousand modern species, 1.1 thousand minerals are known. In all animals, the body is divided into 2 parts - the abdomen, cephalothorax.
The main external difference from insects is number of paws - 8 legs instead of 6. Arachnids also have chelicera located in front of the cephalothorax, pelipalps, similar to tentacles. They are placed on the sides, slightly different in length from the forelimbs, perform similar functions - help move, hold the victim.
On a note!
Often they ask the question - to which family spiders belong, to which group of animals. These are arachnids, arthropods.
Types and units
It is very simple to answer the question to which unit the spiders belong. To the detachment with the same name - spiders. They stand apart. They differ from other animals in their lifestyle, size, reproduction, nutrition. There are differences among themselves in one family, depending on what species spiders belong to.
General characteristics:
- The body consists of 2 parts - cephalothorax, abdomen of oval, round shape.
- Only 4 pairs of legs, a pair of chelicerae, pelipalps.
- The antennae are absent, but the forelimbs can take the form of claws, ending with claws.
- Distinguishes arachnids from insects web-forming ability. Not everyone weaves trapping nets, but they use threads of their own production to form a cocoon, move down, and migrate over long distances.
- Predators possess poisonous glands, paralyze the victim. Turn the insides into a liquid mass.
- Unlike insects, they rarely live in pairs, a large family.All spiders lead a solitary lifestyle. In some species, young spiders live with their mother until they get stronger. Almost all females eat males after fertilization or in the near future.
Arachnids live everywhere, some of them climb into the house person, apartment, settled in utility rooms. Exotic the most beautiful specimens kept as a pet.
