Spider - insect or animal: what and why? Who is the spider?

If you need to write an essay, a message to the lesson on the topic “How the Spider differs from the insect”, then look for all the necessary information in this article.

Despite their appearance, unpleasant for many people, spiders are interesting creatures. But who is he - animals? Or can it be attributed to other types of insects? What do they eat, how do they live, which types are the most dangerous? Look for answers to these and other questions in this article. Read further.

A spider is an insect or animal-a spider-bird, a house, a cross, a spider-shell: what and why, who is a spider?

The spider looks like an insect only at first glance. For a number of signs, he is not such. Spider is an insect or animal: what and why, who is the spider? Here's the answer:

• Naturalists have long shared spiders and insects into different detachments.
• Moreover, a separate science is engaged in the study of spiders - arachnology.
• All other insects are of interest to another science - entomology.
• It is not necessary to have special knowledge to notice the difference between the two organisms.

The spiders had long been inhabited by the Earth before the first insect originated on it. The difference in the age of these living beings is 100 million years. The rest of the differences are even more significant:

• Spiders are a small detachment. There are only them 43 thousand species. This is a very small value compared to the countless insect tribe, in the camp of which there are more than a million varieties.
• Spiders are obtained exclusively by hunting, the only type of spiders that feed on plants is known.
• Eight legs are a distinctive feature of the spider. Insects have six of them.
• The visual system of spiders consists of eight eyes, although individuals with fewer organs of vision are found.
• The traditional digestive scheme in spiders is absent. They do not absorb food with their mouths and do not digest it in the intestines.
• The body of spiders consists of a small number of segments. Most often there are two of them: the head and abdomen.
• The main feature of spiders that allocates them from the world of insects into a separate group is the type of digestion. Spiders do not digest food inside themselves. They envelop the victim with poison and wait until it dissolves. Only after that the spider begins to absorb production.

A unique way of eating makes a spider vulnerable from different sides. To feed on, we need a web, favorable conditions for hunting, the time to turn the booty into a nutrient suspension.

Here are some of the most common species:

Spider-PTICEED

• They differ from their brothers with a championship size.
• Only his body length is - 10 cm, and taking into account the scope of the legs, the length of the spider is 28 cm.
• A real monster covered with brown bristles.
• However, the birdhouse is not dangerous. He can only scare.

Cross

• This inhabitant of garden plots is familiar to many.
• This is a rather large spider with a voluminous abdomen.
• His back is decorated with a pattern in the form of a cross.
• Constantly busy with passive hunting, builds and updates the nets, hoping to enjoy insects.
• The hunter himself is hiding in a shelter from twisted leaves.

Hayfield

• I have long acquired the status of a pet. Mainly for having chosen human housing and does not show a desire to leave it.
• Such a neighborhood does not threaten a person with nothing.
• The haying -bearer stubbornly hangs around the house from the web from the web, which seriously annoys the owners who are forced to get rid of the results of his work.

Home

• It is found everywhere, often climbs into housing.
• The female is larger than the male, but both have the same brown color.
• The spider gives its networks the shape of a funnel.
• The house itself does not show aggression, but if you bring your finger to its den, it will react with a bite.
• However, the consequences of the attack can not be afraid.

Halls

• Belong to large types of spiders.
• They know how to make jumps, so they are engaged in active hunting.
• This family includes the only herbivorous spider - Bagira Kipling. He lives in Central America, and the greenery of acacia serves him with food.
• Nevertheless, during the drought, the spider ceases to be a vegetarian and eats his own kind.

Tramp

• Spiders of this species do not build nets, preferring to attack from an ambush.
• They spend the web in their own way: the female is moving the cocoon in which the eggs are packaged.
• The future mother always wears such luggage on her back.

Spider-hermit

• This is a poisonous spider, read more about it below in the text.

Spider is difficult to win in a multi -shaped struggle. That is why in the evolution of species, insects began to develop through a separate branch.

The spider belongs to insects or it is a spider -shaped, arthropod: if not, then why, what class, group, look?

Countless species include insect class. Entomologists of the whole world have lost their account, trying to describe them, but all new samples are constantly being studied. Does the spider refer to insects or is it a spider -shaped, arthropod?

• Spider is a type of arthropod, class or ak -shaped group.

The spider does not apply to insects, since they are a completely different look. Read in detail about the inner and external structure of the spiderTo know how it looks. Here is a distinctive feature of insects:

• Their body is separated by notches, hence the name. People do not always notice insects due to small sizes. However, the influence on life these creatures have a huge one. The spider is always visible due to the size.
• Outside, the insect is covered with a chitin carapace - a kind of skeleton on which everything holds. The body of the insect is three main segments: head, chest and abdomen.
• The head part is equipped with the mouth and antennae - sensory organs. Some insects also have proboscis. In addition, the eyes are located on the head, but the visual system in insects is arranged in a peculiar way. Insects of shortened, but they perfectly notice movement, color.
• The limbs are attached to the thoracic region, there are only six of them. The spider has 8 legs. The legs of insects are designed not only for movement. For someone they serve to collect pollen, for others-for jumping, and someone with their feet slides through water or distinguishes sounds with them.
• The rest of the organs are enclosed in the abdomen. Everything that is required to maintain life is concentrated there.
• The main distinguishing feature of insects is the presence of wings. As a rule, all representatives of this large tribe know how to fly. The spiders have no wings.

There are various types of insects everywhere, but in their habitat they are distributed unevenly. Insects propagate in two ways:

• Egg - larva - an adult insect.The newborn insect is born immediately from the egg.

• Egg - larva - doll - adult insect. The egg produces a larva that makes its life cycle and pupates. After some time, an adult insect comes out of the doll.

Insects can be found everywhere: in forests, in the fields, in the human dwelling. They are not only in the water. Some species of spiders live even in water, for example, a Serebryan spider. It is worth noting:

• Planet Earth is densely populated by amazing creatures. This or that manifestation of life is observed everywhere: in the air, and in water, and even underground someone flies, floats, crawls.
• But the most mysterious and frightening representative of the animal world remains spiders, very similar to insects.
• There really is a similarity, therefore, both spiders and insects are considered one type of animals - arthropods.
• All creatures of this group are expressed by common features: there is a body covered with chitin and divided into segments, at the edges there is an even number of limbs. This is all that unites them.

So why is the spider not an insect? Here is a detailed answer:

• Spiders, along with the closest relatives of Scorpions and Ticks, form a class of spider -shaped.
• Everyone knows the unique ability of spiders to produce a web. To do this, in the area of \u200b\u200bthe abdomen, they have special glands - web warts.
• The web is a very durable and reliable material that is close to silk in chemical properties.
• To varying degrees, all spiders are poisonous. But those who produce paralyzing substance with a low concentration of poison do not pose a danger to people.

Small individuals are not able to highlight so much poison to harm human health. Many species of spiders are completely harmless. It is worth afraid of only an annoying web in the corners. Yes, and spiders do not show any interest in a person. They are separate in nature and want no one to interfere with them.

Insects, beetles, ants, spiders, scorpions, caterpillars, snails, ticks, crayfish: finish the sentence, what insects are invertebrates?

Various insects - beetles, ants, caterpillars, snails, belong to invertebrates. The same group includes spiders, scorpions, ticks and crayfish. Therefore, if at school in a biology lesson you were asked "Finish the proposal"Write "Group invertebrates."

It is also worth noting that the spiders are not the only representatives of the classroom class. Their closest relatives are ticks and scorpions from the same group of invertebrates:

Ticks

• A small bug, reminiscent of a spider is the oldest inhabitant of the planet. There are more than 50 thousand diverse types of ticks.
• Some of them are completely harmless, others are carriers of deadly diseases.
• Detecting the tick is not so easy, because its size is about 3 mm.
• All ticks lead a parasitic lifestyle.
• Some varieties eat organic residues, causing harm to agriculture.
• Other representatives of this group are even more dangerous.
• Blood -sucking ticks cause a lot of trouble. They need to fight with all the known methods.

Scorpions

• Scorpio differs from the spider by the presence of claws.
• He looks rather frightening.
• At the end of the abdomen, Scorpio wears a capsule with poison, which, if necessary, kills the victim.
• Scorpio habits are the same as the rest of the predators.
• He feeds on insects, and if luck falls out, he does not mind enjoying small animals.

Having met a potential victim, Scorpio clings to it with mighty claws and in an instant lies with the help of a poisonous injection.

Spiders feed on insects: what do they eat besides insects?

Spider is a predator. It eats exclusively animal food. The favorite delicacy of spiders is insects because they are easier to get. However, giant spiders expand their feed base, attacking mice, lizards, snakes, frogs.

The power of spiders is directly related to their habitat. Large individuals fearlessly attack any creature with which he is able to cope. Sometimes a predator is pounced on a sacrifice that surpasses it in size, but leaves the winner from the fight. Without food, the spider freely costs about a month, but hunger feels already a week after the previous meal.

Comparative table of arthropod animals crayfish, spiders, insects - on the topic “Class of crustaceans, arachnids, insects”: for abstract, report, reporting for a lesson

Scientists consider each living creature to a certain group of related organisms. The largest group is the kingdom of animals. It includes smaller groups, and they, in turn, are divided into subgroups. Each group has its own name, which can tell a lot to someone who shows interest.

Here is a comparative table of arthropod animals, spiders, insects - on the topic "Class is crustaceans, spider -shaped, insects" For abstract, report, lesson messages:

What is the difference between spiders and insects?

From the table above you can see how the spiders differ from insects. The difference in everything is in habitats, important body systems, internal and external structure. Although outwardly these species are very similar.

An insect that looks like a spider: a description, what does it eat?

There are another spiders - this is Frin. Remember, exactly the same spider was shown in the film Harry Potter. Many people think that this is the usual insect that the writer invented. But Frin is a burn -legged tropical spider that exists today.

Here is a description and what it eats:

• A frightening look makes a panic at everyone who meets it.
• The body length is small - to 5 cm, long legs - to 25 cm.
• The thug is protected by the shell with round outlines.
• Two medial eyes, 2-3 pair side eyes.
• They are found in tropics, in dense forests.
• There are no web and toxic glands, so Frina is often attributed to insects, and not to spiders.
• Harmless to humans.
• Moves sideways, like a crab.
• It feeds on insects. He catches his paws and grinds before use. Very voracious.

Freens are often made at home. But for this, he needs to provide living conditions close to natural - subtropical. It is important to provide spider with food. It is worth noting that in order to feed offspring, Freens can even engage in cannibalism.

Deadly, the most dangerous spiders and insects for humans: description, list

Spiders living in residential buildings are able to harm only flies and mosquitoes. But in the vastness of nature, truly poisonous monsters come across. As a rule, they all settled in hot conditions Australia and South America. Here is a description and a list of deadly and most dangerous spiders and insects:

Veron spider

• The network weaves a bizarre conical shape, which was reflected in its name.
• The poison of this spider is extremely dangerous for humans.
• After the bite, muscle cramps, convulsions, suffocation develop.
• An immediate introduction of an antidote is required, otherwise the victim will soon die.

Spider-hermit

• It looks harmless, often climbs into the houses.
• Its bite is painless, you can not notice.
• However, at the place of administration of the poison, a wound occurs, which is soon covered with a black crust, and then does not heal for several years.
• A spider bite is especially dangerous for weakened elderly people.

Redpine spider

• This spider is easy to meet in Australia, it often crawls into houses.
• During the bite, it distinguishes the neuroparalytic poison, which causes severe pain and suffocation.
• To save the victim, it is necessary to introduce an antidote.

Chilean spider-sheet

• Its poison causes deadness of the surface layers of the skin.
• The place of the bite becomes like a burn, pain and burning occur.
• Deadly cases are rare, but it will have to be restored for the affected tissues for a very long time.

Black Widow

• One of the most famous spiders.
• He, in fact, is extremely poisonous, but his bite does not always lead to death.
• Many people safely survived the attack of a spider.
• Only female spiders of this species should be afraid.
• Males do not pose a threat.

Brazilian wandering spider

• It is considered the most dangerous among its counterparts.
• Its poison instantly fetters muscles.
• The lungs and heart covers spasm, breathing stops and death occurs.
• In search of prey, spiders often climb into the houses where housing owners, through negligence, receive a portion of deadly poison.

The army of insects surrounding a person, although numerous, is quite harmless. However, among them, poisonous individuals come across that it is better not to meet:

Lonomy

• This fluffy caterpillar skillfully hides in the foliage and not to notice it so simple.
• In no case do not touch it, because the caterpillar poison destroys red blood cells and causes internal bleeding in the tissues.
• The saddest consequence of the bite is hemorrhagic stroke.

Hairy caterpillar

• A shaggy creature among its wools hides spikes with poison.
• Touching the caterpillar entails a defeat of the lymphatic system, suffocation.

Triatomic bug

• This dangerous creature infects a person with Shagas.
• The place where the bug left his mark is swelling.
• The disease affects the heart and stomach and can lead to human death.

Skin bars

• The larvae of this double -winged insect fall under the skin of warm -blooded organisms and parasitize there.
• Infection of gadfly larvae causes a dangerous disease in a person - dermatobiasis.

If you eat in other countries, then try to find out more information about their inhabitants - insects and animals that can be dangerous. Find out how to protect yourself from them and how to provide first aid. The same must be done if you go for a walk to nature - to the forest, to the ponds, to the mountains and so on.

Fear of insects and spiders: what is it called?

Everything that crawls, flies and moves, evokes hostile feelings in a person. Sometimes unpleasant sensations intensify to an extreme degree. In such cases, they talk about entomophobia. This is the name of the fear of insects and spiders. The smallest goat makes a person suffer. The buzz of a bee flying in his business causes him a panic attack.

With the onset of summer, people experiencing fear of insects begin serious problems. They are afraid to open the windows and go out. Signs of entomophobia:

• At the sight of an insect, panic develops.
• During the attack, muscles are reduced.
• There is a desire to run away.
• Inadequate actions arise in order to drop the missing insect.
• Inexplicable acts that are not amenable to analysis are performed.

If entomophobia delivers too many experiences, you can try to get rid of it. There are a variety of tactical techniques that help defeat the horror of contacts with the outside world. Many people who have overcome fears subsequently start spiders at home.

Stories about the world of insects and spiders: for children grade 2

Children in 2-5 grades Schools, independently or with the help of parents, are often asked to write stories about the world of insects and spiders. Here are two such works:

"Fly of butterfly"

Every summer my brother and I go to the village to my grandmother. But if I like to swim in the lake more and play the Indians, then my brother Pasha loves to collect herbarium and collections of insects. I don't really like this activity. I believe that these are living creatures, and therefore to specially dry them inhumanly.

And then one day, when my friends and I were lying in a haystack. Pasha rushed around the site, trying to catch some rare copy. A butterfly landed right on my nose. She was so beautiful that it was impossible to tear the eye. It seemed that all the shades of black and blue that only exist in her bizarre in her.

Perhaps I would have continued to admire it if it weren’t for Pashka, who began to spin around me with his net. Honestly, he has long annoyed me with his love of "research." Therefore, I was sure that if he again tries to catch her, he would receive a couple of cracks from me.

For a long time we rode the hayloft - I tried to defend the right to release a butterfly to the will, and he - to leave it in a dried form in his collection. The brawl overgrown with a fairly strong fight - I managed to cut my lip to Pasha, and he “knocked out” my eyes.

Finally, the butterfly rose into the air, and, sparkling in the sun, disappeared in the distance.

- And you know, you probably are right - the calming Pasha laid a hand on my shoulder - insects were born free and collect them not humanely.

I nodded. We looked at the pinkish sky for a long time. It was evening. The sounds of crickets were heard in the distance. How beautiful he is, the flight of butterflies.

"Gift"

I have long liked a girl from a parallel class - katya. But how to approach her? An excellent student who never even appears in the yard. But, in the end, I decided. True, before making “recognition”, I consulted with my older brother. He said that without a gift in no way.

“Well, there will be a gift to her,” I thought, and carefully taking out a huge spider - agriopa, placed him in a jar. The individual was really beautiful, had a bright color of black and white stripes, which made it look like the Os. Small hairs were visible on the chest and head.

I came to the classroom and put the jar on Katya’s desk, placed a note inside with recognition. I knew that such spiders did not pose a great danger. Their bite can only cause irritation on the skin, which passes after three days.

Surprisingly, my gift was not impressed. Seeing the spider on her desk, Katya first screamed, then began to wave her hands, broke the jar, and I had to catch my spider throughout the class. As a result, I was kicked out of the lesson and wrote a remark.
So after that, make gifts to the girls.

Insects, spiders: photos, pictures, videos

Above in the text, there are many photos and pictures of different insects and spiders. Here are a few of them - the most interesting, famous and not very:

Take a video about spiders:

Video: Amazing Spiders

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