The cross is obliged to the original color, which makes it possible to see an improvised cross on his belly. Despite the threatening appearance, it is very useful for humans. First, it destroys many insects that damage agricultural crops. Secondly, its network, as scientifically proven, can be used to disinfect wounds, and has antibacterial properties. Thirdly, the spider web is stronger than steel and very elastic. There are two thousand kinds of insects.

Characteristics of the individual

What does an insect look like? This is a small spider, having a yellow-brown chitinous shell, which is dumped during moulting. Female are up to four centimeters in length and are always larger than males. Ten limbs can perform many different functions. These are walking legs, holding and recognizing prey, exciting and sacrificing.

Four pairs of poorly seeing eyes to determine light and shadow are compensated for by ideal touch. Hairs scattered throughout the body are able to react to sounds, air vibrations and external stimuli. The shape of the abdomen is round with a cross at the top. Its lower part is equipped to perform many necessary actions. This is the netting of the net for catching insects, building a shelter, creating a cocoon.

Like all family members, the crusader can not digest food independently. He builds nets, catches the victim, injects juice for digestion, envelops him in a cocoon and waits. The digested victim has the form of a solution. The spider drinks it as a nutritious mixture.

Life of an individual is one to two years. The marriage period comes in the autumn. The female is invited to mating. She catches the vibrations, perceiving them as a sign for reproduction. After the completion of the process, the male dies, and the female builds a cocoon to lay eggs and also dies.

For work, she uses soft silky threads, which differ from rigid trap networks. In the cocoon, which carefully hides in a safe place, the future offspring spend the winter. In spring new spiders appear, and in summer they are ready to multiply.

Places of distribution and food

The geography of the insect habitat is extensive. It is suitable for temperate and tropical climatic zones. And this is Europe, Africa, Asia, North America. Many kinds of crusader (about thirty) are found in Russia.

Wherever the spider dwells, it is wet and there is a lot of vegetation. These are ponds, forests, gardens.

On the branches of trees it is convenient to weave traps from networks. Running houses also attracted him. A skillfully stretched web catches flies and mosquitoes, grasshoppers and aphids that enter the spider's diet. Aus, he does not touch poisonous and large insects, breaking off the threads in which the prey is entangled. It is interesting that the female cross is eating food equal to her weight.

Web

Over the creation of a spider web, the crosspiece works at night. Well-developed touch helps him to cope with work, and birds that feed on spiders sleep. This is a daily work that is necessary to restore the trap, damaged by another victim. At night the spider is inconspicuous and in the morning a new web will be ready.

Genetics laid down a certain principle of weaving, consisting of a strictly number of radii and spirals. Each interval of the revolution is the same. And the crusader himself will never get stuck. The insect intuitively identifies non-sticky areas and precisely chooses a route.

The age of the individual does not affect the quality of the web. Having become sexually mature, male ceases to build a nimble network and goes in search of a female. He eats little and grows poorly, therefore less in size than a future partner.

Insect and man

On the question of whether a poisonous or not a spider, you can answer unequivocally. The bite of a crusader is not dangerous for a person's life. He may even go unnoticed. In rare cases, the place of bite hurts, but only slightly and not for long. Usually, everything happens by chance in case of damage to the web, because the crosspiece does not attack the person specifically.

What measures to take if this happened?

1. For disinfection, wash the affected area of ​​the skin. Use running water and soap.
2. Apply an ice compress.
3. If the temperature rises or your head hurts, drink paracetamol.
4. If you have an allergy, you should take an antihistamine.
5. Consult a doctor if there is no improvement from the above actions.

But, it is worth noting that so far no deaths from the bite of the cross have been registered. Its poison in the form of a turbid viscous fluid affects only insects and small in size vertebrates.

Curious facts

The description of this interesting insect would be incomplete without indicating its unique qualities that are readily used by people:

1. Of durable elastic threads, fabric and ornaments are made, and fishermen - nets.
2. Microbiologists determine the composition of atmospheric air with the help of a web.
3. The crusader's nets are the finest optical fiber.

The world is diverse and beautiful. He became a home for a huge number of living beings, with whom a person should live in harmony.

The spider-spider belongs to the family of spirals. They live in almost every country, except the southern and northern latitudes. This species is the most common. In the world there are 2000 species of this spider, on the territory of Russia they live about 10 species. Most often this insect can be found in the Republic of Mordovia, Astrakhan, Smolensk and Rostov regions.

Favorite places of the insect: fields, gardens, shrubs near water bodies, groves, forests, in very rare cases they live on the facades of walls and cornices of buildings. Basically the frogs pick places with very high humidity.

The favorite place of the spider-cross was the crown of trees in neglected gardens or impenetrable forests. Determine what is living here this spider can be on a wheeled web. Considering that the web itself is destroyed under the influence of other insects, wind, trees, people, they are forced to dissolve it every two days and weave again.

Because of the peculiar cross on the back, the spider got its name - the cross. The cross itself is formed from white and light brown spots. The abdomen is round, brown in color. On the body there are 4 pairs of legs, which differ in hypersensitivity, and 4 pairs of eyes directed in different directions. The eyes of an insect make it possible to survey the surrounding world from all sides. An interesting detail: the sight of spiders is indistinct, they see only the outlines of objects or their shadows.

Female is almost twice as large as males. For comparison: the sizes of females vary within the limits of 17-26 centimeters, and males - 10-11 centimeters. After certain periods spiders-crosses molt and discard their chitinous cover. It is this period characterized by active growth.

Special activity of insects is recorded at night, during the day they hide in their shelters. At night they weave cobwebs. Day of the female can also become active. It can be hunting for flies, butterflies. The unique creature freezes in one pose, which at first glance gives the impression that it is dead, but it is a ruse for the victim.

The external structure of the spider-crosspiece

Spiders have 8 legs, with very sensitive organs of smell. Their abdomen is round, resembling a droplet. On the abdomen are spots that form the shape of a cross. There are 4 pairs of eyes on the head, which make it possible to provide a wide view. Spider-spider poisonous hunter, so the vision for him is a matter of life and death.

What the wondrous insects eat

This species is carnivorous. Forage, they need aphids, flies, mosquitoes, and gnats. Spiders are waiting for their potential victim in the middle of the web, to which the signal thread is attached. As soon as the insect flies to the web and gets into it, then trying to get out, they create a vibration of the web, so the cross in the center receives a signal about the potential victim. Given that there are organs of smell on the legs of the spider-crocodiles, they can also hear the victim with their paws.

After receiving the signal, the insect approaches the victim and injects into the body the poison - chelicer. Some crushers immediately eat the victim, while others leave food in reserve. They twirl the victim into a web and hide it from prying eyes in the foliage.

These insects eat a lot. For a day they need a quantity of food equal in weight to their own. Almost always the spider-cross is on the post, he hunts. For a day only a small amount of time he takes to rest, while the signal thread remains tied to the leg.

Spider-spiders do not eat insects that are too large for them or poisonous. They throw them out of the web, cutting it off. Dangerous for these creatures are wasps and flies, which leave their larvae on the body of another animal. If such a fly or a wasp leaves its larvae on a spider, then they themselves begin to eat it, and develop.

The main differences of the mysterious creation

These spiders refer to the species of dioecious animals. When the pairing took place, then the male dies, and the female actively prepares the cocoon  for future offspring. Most often, small spider-eggs appear in the fall. At first, the woven cocoon is on the back of the female, and then she carries it to a secluded and safe place. These can be cracks or small holes in the bark of a tree. The new offspring comes out of the cocoon in the spring. Young individuals ready to mate, they become by the end of summer, and then the old female dies.

Males at the beginning of their lives actively weave the web to provide themselves with food. But as soon as the period of mating comes, they are engaged in nomadism, in search of the female. They eat little, and this is affected by their weight difference with the female.

When a spider finds a female, it gently picks up to its web, and necessarily weaves its thread in case of retreat. The females can perceive the potential groom for their sacrifice  and lunch. Then the male very gently twitches the web and as soon as she reacts and throws at the prey, he runs away through his webbing.

Such games can last several minutes until the female understands that her fiancé has come. Further, mating takes place, and here the male needs to be on guard. Once the process has taken place, the female becomes a hunter again, and the male can become its victim. Therefore, he has to quickly escape after the end of mating.

How do spiders cross

In the cocoon prepared beforehand, from 300 to 800 eggs are placed. They have an interesting amber color. Since the cocoon has fairly thick walls, the future spiders are not afraid of frost or water. Thus, eggs are stored until the spring, and with the onset of heat, young offspring appear on the light. Some time young spiders sit in a cocoon. This is due to ignorance of the environment, and their fear of learning new things, but eventually they all leave the shelter and begin an independent life.

Given that the progeny of insects is very large, then there is a natural competition for the right to life. Some young spiders fall into a network of relatives, and they are eaten up, and some can not get food and also die. Therefore, the farther the young spider leaves its cocoon, the better environment it will get and will have more chances to survive and develop.

All the movements of the individuals under consideration are performed only because of their web, this is due to the fact that their legs are very weak. They also travel with the help of a fair wind. An interesting fact: on its spider web a spider can fly up to 400 kilometers.

Crossbow bite for a person

A spider-spider bites and admits its poison not only in insects, but also in humans. Most often this happens in the case of direct contact of the individual and the human hand. It is worth knowing some rules to avoid unpleasant contact with this poisonous spider:

If you are bitten by a spider-crusader, then within 5 minutes the following symptoms will appear:

• Headache;
• General weakness;
• Sore joints, painful sensations throughout the body;
• The place of the bite starts to itch and tingle;
• There may be subcutaneous hemorrhage.

For a person, the bite of a poisonous spider-cross is not fatal, but do not neglect the provision of first aid. It is necessary to make such manipulations:

1. The bite site is washed with soap and water. To avoid additional infection;
2. If possible, ice is applied to the bite site, or any other cold object;
3. If you feel a headache or a slight increase in temperature, you can take the usual paracetamol;
4. If you are allergic, then drink any antihistamines to avoid possible exacerbations;
5. In the case of a bite, the spider-cross has fallen on the child, do not wait for the reaction of the body, ask for help from a doctor.

The benefit of a spider-cross for man

Despite the fact that spiders can admit poison into the human body and pose a danger, their web has useful properties and can be used in various fields.

The web has an excellent antibacterial effect, so it can be used to disinfect wounds.

In optical devices, where super-precision is required in calculations, the web of this spider is used.

Microbiologists made a discovery and developed a unique air analyzer based on the crusader web. Exactly the web catches all microparticles, which are in the air, and the composition of the air is determined from them.

Spider-spiders are unique animals that can be useful to mankind.

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Is such a spider dangerous as a cross?

Spiders spiders are a family of circuses. The appearance of these spiders is unusual, and they can be recognized by the white spots on their back, which form a cross. Thanks to the coloring, the spider has a cross and got this name. Depending on the habitat, this representative of the arachnids may change the coloration, but the characteristic vestige is preserved.

On the whole planet there are about 2 thousand varieties of spiders of the crosses.

Most of them live on the territory of Eurasia, however, they can be found in some countries of the former CIS.

The spider's spider's bite is dangerous, but not fatal to humans. The poison of such a spider is used to paralyze the victim. On small mammals and people, the crusaders attack only in cases of self-defense. Also, the bite has no effect on large animals.

The habitat of these animals: thickets of bushes, groves, gardens, forests, abandoned buildings and low grass. Most often, they weave their webs on the crowns of trees, where many nutritious insects fly between branches. In general, it can be found almost anywhere in the warm season.

Appearance of bites

The body of people after bites begins to immediately react to the toxin. Although it is very hard for the spider to bite the skin of a person, the structure of its organs is not designed for this, sometimes there are cases of bites in places where the skin is rather soft. Consequently, the toxin gets under the skin.

The spider bite is manifested in the form of redness of the skin, its edema and hardening. Immediately after the bite, a white spot of small size appears on the affected area. Usually, the spot affected by a stain is not more than a five-kopeck coin. The edges of this stain are pink or reddish

Shade.

A bite on the body of a person who has an individual intolerance to the body of an insect's poison, if it's easier to say, then an allergy to a toxin that gets stung can have a different appearance. Because of intolerance to the poison of the body, the affected area acquires a bright purple hue, there may be a rash.

Symptoms of bites

As the victims say, the affected area starts to hurt very much, but it happens that people do not have any pain at the bite of the spider of the crosspiece. It's all about individual receptivity and receptor sensitivity.

But, after some time, most often it's 5-20 minutes, the following symptoms start to appear:

• Headache;
• Feeling of weakness;
• Pain and sensation of aches in the joints;
• Redness or swelling of the face;
• Burning in the place of bite;
• Bruising in the affected area;
• In rare cases, after 20 minutes after the lesion, a rise in temperature will be seen.

Each organism reacts to the bite of a spider differently. It happens that all of the above symptoms are observed, and sometimes only some of them.

If a spider has bitten an allergic person, then in such cases an immediate request to the doctor is required. He will prescribe a further course of treatment, which can last only a few days, just as the poison of this arachnid is unstable.

Consequences of bites

The consequences of the poison effect of this arachnid on the human body are very similar, but differ in their intensity. Lethal outcomes have never been documented, however, it happens that the place of the poisonous bite of the spider manifests tissue necrosis. Also, for several days, there is a swelling on the human body, which then gradually comes down.

For people with individual intolerance, after a spider bite, a more unpleasant consequence may occur, up to a lethal outcome. If after a spider has bitten a spider, a person is noticed breathing disorders, inflammatory processes at the site of a bite or loss of consciousness are all signs of an allergic reaction to the poison.

In this case, it is necessary to take the victim to the hospital, or call a doctor. Independently to do any procedures in such cases is not recommended. It is impossible to predict the reaction of the body, especially when you do not have any medical knowledge or practice.

First aid

Although the spider's venom does not threaten the injured fatal outcome, timely assistance is still necessary:

Spider-spider is the representative of the most common species, which occurs in almost all regions except northern and southern latitudes. It prefers places with high humidity and is most often found in gardens, in fields, among shrubs growing near water bodies, as well as in groves and forests. It can also live on the cornices of buildings and on the facades of buildings.

In total, there are about 2,000 species of spider-spiders, 10 of which occur in our regions

Characteristic

Spider-cross, or crusader, got its name thanks to a cross on the back, which, as you can see in the photo, is formed of white spots. The abdomen of the insect is colored brown, has a drop-shaped shape. The crosspiece has 8 legs, on which there are supersensitive organs of smell. There are eight eyes on the head, they are directed in different directions, which makes the survey as wide as possible.

It is interesting! Spider-spiders have very poor eyesight - they see only the blurred outlines of objects. And the sensory organs on their paws help them to cognize and interact with the outside world!

The male spider-cross looks the same as the female. The only difference is the size. Thus, females are somewhat larger than males and their sizes can be from 16 to 25 mm, the size of the male body is about 10-11 mm. Over the course of their lives, these insects moult several times, and this occurs at regular intervals.

  Spider-spider grows, and from time to time he has to throw off a tight chitinous cover

Food

Crusaders are hunters who show the greatest activity in the twilight and at night. In the afternoon they prefer to sit out in secluded places. In their diet there are:

• flies;
• butterflies;
• mosquitoes;
• gnus, etc.

During hunting, the spider-crusader is located in the center of its web and freezes. From the side it may seem that he is dead. But as soon as the victim enters the net, the hunter reacts with lightning speed. He quickly runs to the entangled insect, pierces his sharp claws in his body, which are located on the front pair of legs, and injects a paralytic poison. After a while, the victim is frozen. At the same time in different situations, spiders either immediately eat their prey, or leave it in reserve.

On a note! The fact that someone was in the web spider learns with the help of their paws - the victim moves, trying to get out, and creates a vibration, which feels the crosspiece!

  The spider-crusader very deftly with two paws twirled his victim into the patina and carried away to a secluded place

A spider-spider eats quite a lot - the total amount absorbed per day of food is approximately equal to the mass of its body. And for one time only he is able to eat about a dozen insects. For this reason, he spends almost all his time hunting, constantly being in the web and waiting for another victim. The rest is given a small part of the day, but even during this period the signal thread is necessarily tied to one of the hunter's legs.

On a note! The diet of the spider-cross is not all insects. If a victim enters the web with an unpleasant odor, someone is poisonous or too big, then the hunter prefers in that case to let go of the unwanted guest. He snacks the restraining threads and lets go of the guy!

Reproduction

Young males during the spring and summer are engaged mainly in weaving the web and hunting, trying to provide themselves with a normal diet. Closer to the period of mating, they leave their shelters and move from place to place in search of a female. At this time, they eat very poorly, which explains the significant difference in mass between them and pauchikha.

After the male finds the web of the female, he makes several attempts to inform her of his appearance - gently steps on the edge, causing vibrations. The female immediately breaks off and tries to catch up with the male, thinking that this is another victim. And the male, in turn, flees by his thread, which he prudently beforehand descends. This continues until the spider does not understand who exactly came to her "to visit."

  Female replaces anger at mercy and briefly announces truce

Immediately after mating, the spider tries to escape more quickly. However, this can be done to units - the quickest. Most die from the poison of the female. This period is about the end of summer or the beginning of autumn.

The fertilized female makes masonry. Eggs, which can be about 300-800 pieces, she puts in a tightly woven from a spider's web and wears it for a while. Then the spider finds a suitable shelter, where it leaves the masonry. Often such a place becomes the tree bark behind the trunk, cracks in the wood, fallen leaves, etc. There, eggs are stored until the very spring. Moreover, in the cocoon the future offspring are in absolute safety - it is warm and does not get wet.

With the onset of heat, small spiders appear from the eggs.

  Some hatching spiders continue to sit in a cocoon - they prefer to get acquainted with the outside world gradually, and as soon as they gain confidence in their safety, they immediately leave the shelter

After the birth of young frogs need enough food, but not always the area where they first saw the world, able to feed them. Therefore, it is important for insects to leave this densely populated area as quickly as possible, otherwise many of them risk being eaten by their own brethren or simply starving to death. However, these insects are unable to independently travel long distances, because their legs are very weakly developed. Often they are carried by a tail wind - the spider waits for windy weather, clings to its web and flies, thus, from place to place.

It is interesting! The web helps the spider to cross very impressive distances - sometimes about 400 km!

Given the above, it is easy to calculate how much a spider lives on a cross. In the spring the young leaves the eggs, and in the fall they already mate. Males die most of the time immediately after they fertilize the female, and spiders later - they spend several weeks near the hidden cocoon and, having fulfilled their parental duty, die before the arrival of winter. It turns out that the cross is allotted by nature is not so much - only 6-8 months.

Toxicity

Is spider dangerous for humans? Its poison is toxic for us and about five minutes after the bite you can feel the following unpleasant symptoms:

• a sharp headache;
• slight increase in body temperature;
• slight weakness;
• unpleasant sensations in the joints;
• itching and tingling at the bite site;
• subcutaneous hemorrhage is possible.

On a note! Often after a bite, there is only a local reaction, which manifests itself in the form of reddening and somewhat hardened edema. But sometimes the consequences can be more serious. In this case it depends on the immune abilities of the human body!

  The bite of the spider-cross can be dangerous not only for humans, but also for rabbits, mice and rats

The bite of the spider-cross is not fatal, however, despite this contact with it is desirable to avoid. If the insect bites you, then, first of all, the affected area should be thoroughly washed with soap, which will help prevent additional infection. Further, it is necessary to apply something very cold to the site of the bite, if possible, ice, and treat it with anti-inflammatory ointment.

Important! If a spider has bitten a child, then calling an ambulance is mandatory!

In order to avoid contact with a spider with a cross resting in nature, it is necessary to close the tent for the night, and if there are windows in it, then mosquito nets should be put on them. In the evening, be sure to inspect your sleeping place, with all the rugs and blankets preferably take out and properly peretrusit. Walking in the woods, always bypass the woven webs, and if you notice the cross very close to it, do not take it in hands.

Similar rules apply to staying at a tourist base and even at a dacha. Upon arrival, you should inspect all rooms for symmetrical webs and if this is found, then it must immediately be carefully removed by some long object. In this case, it is advisable to protect hands with gloves.

If you like to walk in the woods, then surely you come across a large spider with a cross on its back, braiding skilful nets in the branches of trees. It is called - the cross. This is the most common genus of Arachnids in our latitudes, numbering over 2 thousand species. Is it worth it to be afraid of the crosses? Be afraid, maybe not, but you should be afraid. Contact with a man arthritic avoids, but if you try to catch it or pin it down with carelessness, a rather painful bite can not be avoided.

The ordinary cross is cute and dangerous

Let's get to know each other

A spider with a cross on its back gave the name to a whole family of Arachnids, although such a vivid sign is not available to all the Krestovikov. An arthropod belongs to a family of spiders-circuses. The species we are interested in is an ordinary cross, it is distributed in the middle belt and in the south of Russia, is afraid of the cold, so it is not taken to the northern regions.

What do the crosses look like?

The female of the cross is larger than the male and can reach a length of 2.5 cm. The representative of the opposite sex is half the size. Let us dwell on the most striking identifiable signs.

• Coloring. The body of the spider is yellowish-brown in color, covered with whitish, as if camouflaged, spots. In individuals living in the sun, the color is darker, in the shade - lighter. On the upper part of the abdomen, several oblong and round spots are distinguished, forming a white pattern in the form of a cross.
• Large round abdomen. If there is one, then it means "girl". In males, the abdomen is narrow and not so convex.
• A lot of hairs that cover the cephalothorax, abdomen, limbs. They perform not only a protective, but also a tactile function.
• On the walking legs, the darker rings are noticeable.

Otherwise, the structure of the spider with the cross is the same as that of the rest of the arachnids - 4 pairs of legs and simple eyes, the oral apparatus is piercing-sucking type (jaw). All this is located on the cephalothorax.

  We say a spider, we mean a spider, because only "girls" spin the nets, the males lead a stray lifestyle

Habitat

The cross likes protected from the sun, damp places, therefore settles in thickets of bushes, on trees, in high grass. The hermit's "unsociable" temper is manifested in the fact that it can often be found in neglected places - on abandoned plots, wild gardens, in dilapidated cottages. Here, a spider with a cross on its back is an expanse - know, braid all the cobweb cobwebs, no one will disturb.

Lifestyle

Night hunter, predator, hermit, indefatigable toiler - that, perhaps, the most significant characteristics of the nature and way of life of the crosspiece.

Potential victims are insects of small size, which our hero catches with the help of a wheel-shaped web spaced almost vertically. She's very sticky. Flies, mosquitoes, aphids, hitting the net, stick tight, and trying to get out, get even more confused.

Every night the spider works - examines the network, weaves new ones. If someone is too big in the net, for example, a bumblebee, a cross prefers not to get involved and breaks the web.

Interesting! In the weaving of nets, a spider-cross is a virtuoso. This "talent" he laid down at the genetic level. And no matter how many networks they compare, they are all made according to the same principle. There are exactly 39 thick filament-radii from the center, 35 circles of sticky web are fixed on them in a circle. Accordingly, the fastening points are always 1245. This is spider arithmetic!

  Such a "work of art" is best avoided - somewhere near the trap is a female cross

Features of spider hunt

A spider with a white cross on his back hunts from ambush. He does not sit on a cobweb, but hides in a special shelter, usually among dense foliage. To the lair from the center of the trap is the "signal thread" behind which the cross watches. The slightest fluctuation of the thread - the hunter is right there.

The entangled spider retains the entangled spider with the jaws. To immobilize the victim, pierces the chitinous cover with sharp chelicerae, injects poison. After that, swaddles the prey with a bunch of cobwebs. In addition to poison, the spider injects into it a digestive enzyme that literally digests the insides. The fact is that the spider's digestive system is capable of sucking in ready-made nutrients, and the digestion process itself is remotely, essentially inside the victim's body.

After a while, the spider-spider again comes to the prey to eat lunch.

Interesting! This is a rather voracious arthropod. Every day, the cross-piece eats up to a dozen insects, and can catch a few hundred! If a lot of production, leaves in reserve. In this case, the victim only paralyzes and wraps in a cocoon, digests as necessary.

The basic Instinct

The period of mating begins near the end of summer. The females of the cross are behaving like real "black widows" - after fertilization they consume the partner. In autumn, the female lays eggs (about 300 pieces), around which weaves a dense cocoon of soft web. For some time she carries it on herself, then hides in a secluded place, attaching to some surface. Then it dies.

Juvenile spiders appear in the spring of next year, but sexually mature only after wintering, next summer.

  Careful mother takes care of the cocoon with future offspring

Interesting! The web is not only a hunting device, but also a means of moving spiders. Arthropods throw out a light thread and carry it by the wind. In this way they cover a distance of up to 400 km.

Benefits of the Crusaders

A spider with a cross on the back benefits the person.

1. He eats a huge number of insects, many of which harm the garden and the garden.
2. In folk medicine they use cobwebs. It is a powerful antibacterial agent that is used in "field" conditions for disinfection and wound healing.
3. A sticky web is capable of catching the smallest microparticles. This property scientists use to analyze the composition of air in a given locality.
4. Residents of the tropics rely on the strength of a spider's thread - they weave netts and fishing nets from it.

  Being a thunderstorm of insects, the cross is panic afraid of flies outside the web. They manage to lay eggs under the skin of the spider, while he is still sitting in ambush

Danger of a cross for a person

A spider's bite with a cross for a person is not more dangerous than if a bee stung it. It feels like an instant sharp prick. At the site of a bite, a swelling appears, in the puncture zone there is a small white spot, the skin around turns red, it itches. From toxins the organism is released within 24 hours.

More serious symptoms are felt by people suffering from an allergic reaction to insect bites. They may have:

• headache;
• weakness and aches in the joints;
• chills;
• temperature increase;
• edema, including mucous membranes;
• burning, tingling of the bite;
• densification of the skin in the lesion.

Note! Most often, the cross bites a man when he takes it in his hands or arthropods accidentally falls under his clothes. There were cases when the spider climbed into the tent, through an open window.

  You will not take a bee in hand? So why provoke a spider-cross?

First aid with bite

To minimize the effects of a spider bite with a cross on the back, do not neglect the provision of first aid. It should be remembered that along with the poison in the wound can get an infection that will cause harm no less, and maybe even more than the toxin itself. What should you do first?

1. Wash the place of bite with cold running water and soap.
2. If the swelling is severe, apply a cold compress, you can use ice for a short time.
3. Take an antihistamine drug, for example, suprastin, loratadine, zodak.
4. After a while, an ointment that removes itching and swelling (fenistil, sinaflan) can be applied to the lesion site.

If the cross bitten the child, do not wait for the reaction to the poison, immediately contact a doctor.

Precautionary measures

Although the crosses are quite common, it is not difficult to avoid direct contact with them.

Going to the forest, wear closed clothing, avoid the side of the thickets if you notice in them circular webs of cobwebs.

Arriving after the winter at the cottage, carefully inspect the window openings, cornices, evade the spaced web, clean up with gloves. The same applies to garden work.

If you find a cross, enjoy it from a distance, do not touch it with your hands.

What is a spider-cross: