Common cross (spider): description, habitat. How long does the cross spider live? Does the cross spider bite?

The cross spider is a representative of the genus of amorphous spiders of the orb-weaver family. More than 2 thousand species of crosses are known.

Characteristic feature appearance this spider has spots of light brown or white, located on the upper side of the belly, which form a cross.

Appearance

The abdomen itself is rounded with no segments. If you look at its lower part, you can see 3 pairs of arachnoid warts, which contain about a thousand glands. It is the glands that are responsible for the production of webs for a variety of purposes: to build a trap, weave a cocoon, or to create a shelter.

Female size exceeds the size of the male. For example, the body length of a female is 17–40 mm, and that of a male.

10–11 mm. This type of cross has a body cavity mixed type or in other words mixocel. This cavity was formed as a result of the merger of the primary and secondary cavities. The body of the crusader is covered with a chitinous shell of yellow-brown color. During molting, the cross sheds the shell, thereby renewing the chitinous layer.

The cross has 10 limbs:

The cross spider has very poor eyesight, despite the fact that it has 4 pairs of eyes. This spider distinguishes only light, shadow and blurred silhouettes. But this does not prevent him from having excellent orientation in space, because he has a well-developed sense of touch. It is carried out thanks to tactile hairs covering the body. Every type of hair has its own function: some perceive sound, others detect changes in air movement, and others react to various kinds irritants.

The lifespan of a spider is from 1 to 2 years and depends on the type of crusader.

Respiratory organs and heart

The crusader breathes using his abdomen, because the organs responsible for this important function, are located exactly there. Respiratory organs are presented in the form of a pair of pulmonary sacs with numerous leaf folds. They contain air and hemolymph circulates, while being enriched with oxygen. This name refers to the fluid that flows in the vessels instead of blood. The respiratory organs of the cross also include trachea-tubes, collected in two bundles. They open through a hole located at the bottom of the abdomen.

The heart, in the form of a long tube, is located in the dorsal part of the abdomen. Large vessels will withdraw from the heart.

Excretory system and digestion

The excretory system is presented as:

Coxal glands. A system of canals departs from them, which ends in the form of excretory ducts in the area of the base of the walking legs.
Malpighian tubes. With their help, metabolic products leave the crusader's body.

Digestion in the cross spider is external. In other words, the crusader’s body is not able to digest food, so it builds traps from cobwebs.

Features of the web

The crossers are updating their web almost every day, due to the unsuitability of the old one. The reasons why a spider needs to change its web are:

Gaps due to prey being trapped.
Holes caused by large insects that are unsuitable for spider feeding.

The web is being weaved at night. This is explained by the fact that at night the crossbird feels completely safe, because birds that feed on insects have been sleeping for a long time. The new prey trap will be ready for use in the morning.

The spider has a scheme for weaving a web, laid down at the genetic level. The web always has a certain number of circles and spirals, and the spaces between the weaves are the same. Young males build webs no worse than adults until they reach sexual maturity.

Reproduction

Spiders begin to mate in autumn time year. A male who has reached sexual maturity, goes in search of a female who is waiting for him in her weaving. As soon as the spider has found its chosen one, it attaches a thread to its web, as if inviting it to itself. For the female, this means that it is time to reproduce and she leaves her network. The male representative dies after mating.

In turn, the fertilized female builds a cocoon where she will subsequently lay her eggs. For several days the cocoon is under the protection of the mother. The female then finds a secluded place in the cracks of the walls, in which the cocoon survives the winter. The female dies, and spiders emerge from the cocoon in the spring. In summer, the new offspring are ready to reproduce.

Description of popular types

Habitat

This type of spider prefers temperate and tropical climates. climatic zones. Various types of cross can be found in countries such as:

The cross spider feels comfortable in damp areas, near water, as well as in parks, gardens and forests. In other words, the crusader can be found wherever there are trees . After all, it is between the branches crusader trees and weaves his web. The spider's orb web is found under roofs and in doorways of abandoned houses.

Nutrition

The spider's diet includes:

flies;
small grasshoppers;
vile;
mosquitoes;

Males do not eat well, so they grow at a slow pace. Females have an excellent appetite. In 24 hours she is able to eat an amount of food equal to her weight.

If food unsuitable for the spider in the form of a poisonous or large insect falls into the trap, then the crusader, as it were, cuts out the object by breaking the threads. Spiders are afraid of wasps that lay eggs on living creatures and avoid them. After all, the body of a spider is a favorable environment for the development of their larvae.

When a spider hunts, it sits not far from the trapping net in the foliage or in the very center of the web and waits for the victim to become entangled in the sticky threads. When prey falls into the web, the spider's hairs pick up the vibrations of the web. The spider then injects into its victim gastric juice and rolls it into a cocoon created from a spider's web, and waits for dinner to be prepared. Stomach juice turns the prey into a solution, which the spider soon drinks.

For whom is the cross spider dangerous?

Crusader venom contains substances such as hemotoxin and neurotoxin, which are fatal only to invertebrates, as well as small vertebrate organisms. For humans, cattle, sheep and other living organisms, the bite does not pose any particular danger, and some do not even notice it. The site of the bite can be recognized by slight pain, which passes very quickly. Spiders never attack first on a person, and bite only in case of protection, if the web was accidentally touched.

How do crusading spiders move along their own web, since its threads are covered with an adhesive substance? The fact is that this arthropod moves along radial threads on which there is no adhesive substance, so it does not stick.
The web of the cross can show the composition of the air, which is why it is so actively used in microbiology.
Spiders aren't the only ones who need webs. Thanks to the strong threads of the cross spider's web, some tropical residents use it to weave jewelry, fishing gear, and also to make fabrics.

The cross spider, or Araneus, belongs to the orb-weaver family, a genus of araneomorphic spiders. In total, there are more than 1000 species of representatives of this genus in the world, but in Russia and the CIS countries you can find from 15 to 30 species. Crosses live mainly in damp and damp places - in fields, meadows, forests, along the banks of reservoirs and rivers.

The structure of the cross spider

The size of the male is 10-11 mm, the larger female is 17-26 mm. The cross has 8 legs and a large rounded abdomen. On the upper side of the spider's abdomen, white or light brown spots form a kind of cross, hence the name of the spider. The cross spider has 4 pairs of eyes, like most spiders; they look in different sides, providing its owner with a fairly broad outlook. However, spiders see poorly, they are myopic and distinguish mainly shadows, movement, and the contours of everything that surrounds them.

Features of the cross spider

Spiders are dioecious animals. After mating, the male dies, and the female begins to weave a cocoon from the web for eggs, which she usually lays in the fall. The cocoon turns out to be quite dense; the female carries it on herself for some time, and then hides it in any safe place - in a crack in the bark of trees or behind a loose piece of bark. In spring, young (juvenile) spiders emerge from the cocoon. They become sexually mature by the end of summer, after which the female that gave birth to them dies.

In the first days of his life, the male cross spider also builds a web - he needs to eat something. But upon reaching maturity, he begins to wander in search of adventure and, of course, noticeably loses weight. During this period, he is driven by only one desire - to find the female’s web.

When the female's web is found, he makes every effort not to get to her for lunch. To do this, he weaves a thread for himself down from the edge of the web - for retreat. Then he carefully tugs the thread. The female immediately rushes in search of prey, and the male retreats down the rescue thread.

This is repeated several times until the female understands that it is not the prey who is pulling the web, but her long-awaited partner. Then she changes her anger to mercy, and the spiders mate. But the male cannot let down his vigilance, because... after mating, the hunting instinct awakens in the female again. If he does not escape in time, he may well be eaten.

Reproduction of the cross spider

The cocoon, which the female weaves in autumn, contains from 300 to 800 amber-colored eggs. Under the protection of the cocoon, future spiderlings are not afraid of either cold or flood - it is very light and does not get wet. The eggs wait out the winter in the cocoon, and in the spring small spiders emerge from the eggs. For some time they sit inside the cocoon, afraid to leave such a cozy refuge. But gradually they spread out and begin to live on their own.

It is clear that it will be very difficult for such a huge offspring to get settled in life. Competition is very high, some will die of hunger, and others will be eaten by their relatives. Therefore, the young spiders face a serious task - to disperse as quickly as possible in order to increase their chances of survival.

Their legs are small and weak, so the spiders move, gliding with the help of their web, like real aeronauts. With a fair wind, the spider can fly a distance of 300-400 km. When the wind subsides, the web falls to the ground, the spider throws it away and begins to settle in a new place. If he is lucky with the site, he will be able to catch up to 500 insects per day with his nets. The hunt is ongoing.

According to naturalists, millions of spiders live in meadows, fields and forests, destroying entire legions of insects, including those dangerous to humans and their households. If it were not for spiders, the number of flies, mosquitoes, gnats, midges, moths and aphids would be several orders of magnitude greater and could seriously poison our lives. Experts do not even rule out the possibility of using spiders in biological control with pests.

Web of the cross spider

Cross spiders catch their prey using webs. More precisely, their females - male spiders do not weave webs. Female spiders guard their prey either in the center of the web or sitting next to it, on a signal thread. Mostly flies or mosquitoes get caught in the web. If it comes across prey that is too large and inedible, for example a wasp, the spider can free it by tearing off the web.

The spider either eats the caught prey immediately on the spot, or, if it is not too hungry, drags it into a secluded corner or entangles it in a web. Around the web, under the leaves, you can find a whole food warehouse of flies entangled in the web, stored for a rainy day.

The behavior of the cross spider

How does a spider hunt? When a fly or any other insect gets caught in a web, the spider senses the vibration of the trapping web, it crawls into the victim and kills it with a bite of its poisonous mandibles, or chelicerae. The fly stops shaking the web, and the spider calmly swaddles it with a bundle of thin threads, pulling them out of the abdomen with a pair of its legs.

Having snacked on the surrounding threads, the spider takes its breakfast and goes to the center of the web to have a meal. He crushes his prey, injecting digestive juices into it. When the fly has digested inside its shell, the spider sucks up the semi-liquid contents into which the fly has turned and throws away the victim's skin. During a successful hunt, a spider can eat about a dozen flies in one sitting. The venom of cross spiders is dangerous only for small insects; it cannot harm humans.

Habitat of the cross spider

Crossworts live mainly in the crowns of trees, using leaves to make a secluded shelter for themselves, and stretching cobwebs between the branches. The wheel-shaped web can be found in a forest, grove or neglected garden. Sometimes it can be found in bushes or in window frames and under the eaves of abandoned houses.

The trapping web constantly requires repair, it is destroyed by both small and large insects, so every couple of days the cross spiders unravel the web and make a new one. They usually do this at night, and by morning the new web is ready for new prey. Thus, at night the spider is relatively safer, because it natural enemies, insectivorous birds, sleep at night. It does not need light to build a web; a well-developed sense of touch is sufficient.

The enemies of the cross spider are also flies and wasps, which lay eggs in the bodies of their victims. For example, the fly Melanophora rugalis - taking advantage of the spider’s immobility, it can fly up to it, sit on its back and in the blink of an eye lay an egg in its body.

Web of the cross

The web of the female cross has exactly 39 radii, 1245 points of attachment of the radii to the spiral and 35 turns of the spiral - no more, no less. The webs of all spiders are as similar to one another as two peas in a pod, because all the necessary data is genetically enshrined in their heredity. Therefore, even small spiders know how to build webs and catch prey.

Any web is not only beautiful in its symmetry and delicacy, it is very rationally arranged. All the threads that form it are very light and, nevertheless, very strong, and are connected in such a way that they only work to break.

How does a spider manage to build such an even, symmetrical web that is several dozen times its size? A spider (more precisely, a cobweb), having climbed onto a branch or tree trunk, releases a long web thread from its abdomen. It is picked up by a stream of air, and the spider waits patiently until the thread catches on something suitable.

If this does not happen and the thread hangs, the spider pulls it towards itself and eats it. Then he runs to another place and tries again. And so on until the thread is caught. Then the spider crawls to the hooked end of the thread and secures it well. Then it descends on its thread to some support. There he also firmly fastens this thread - now 2 threads are already fastened.

The spider returns along the second thread and drags along the third, which it secures at the starting point, i.e. where the first thread came from. The triangular frame - the basis of the future web - is ready. Inside this frame, the spider stretches several threads that intersect in the center. The spider marks the center of the web with a lump and begins to extend all its numerous radii from it, fastening them with a spiral thread, and then lays catcher threads. At the intersection points of the spiral and the radius, the spider binds them with its legs.

Note that the angles between all radii and the distance between the turns of the web are strictly constant values. How can such a little creature manage to maintain your web in strict accordance with geometry? For this you need at least the simplest meter. And, imagine, the spider has it! This is his first pair of legs that can act as a scale ruler.

While working on the web, the crossmaker regularly checks the distance between the spirals. His natural tool is so precise and reliable that it allows you to work in pitch darkness. The last step in creating a web will be a signal network, the end of which is laid to the spider’s shelter. To build the entire web, the spider requires several hours of painstaking work and approximately 20 meters of web.

From a chemical point of view, the web is a complex protein polymer - fibroin. Many glands of the spider's abdomen form this viscous liquid, which quickly solidifies in air in the form of thin filaments. The spider can produce several different types of web with different properties. For the frame of the web he makes a dry and thick thread, for the cocoon - silky and soft, for the catching spiral - thin and sticky. Why doesn't the spider itself stick to its web? Everything is very simple - he runs only on non-adhesive threads, and diligently avoids touching adhesive spirals.

The polymer liquid comes out from the glands on the spider's abdomen through thin tubes and hardens into very thin threads. If the spider needs special strength, it can weave several of these threads together. Scientists in recent years They are seriously studying the properties of spider “silk”. It turned out that it has many unique properties.

The technology for producing spider web threads is similar to the production of synthetic fibers. But in terms of strength, no synthetic fiber can compare with spider fiber - it can withstand loads of up to 260 kg per 1 sq. mm, which is stronger than steel. This is why residents of the tropics make nets from spider webs to catch birds, bats, insects, and even weave fishing gear.

The web is so elastic that it can stretch up to 30% of its length and shrink back to its original length. Its lightness and subtlety are involuntarily amazing, because 340 grams of web is enough to encircle globe along the equator!

The use of cobwebs in agriculture and medicine

People have long tried to make fabric based on spider webs. In Germany, back in the 16th century, ribbons were woven from spider webs and various decorations. Then in France, artisans came up with the idea of making gloves and stockings from spider webs, which caused complete delight among fashionistas.

But it turned out to be impossible to launch this technology into large-scale production, and this was convincingly proven by the physicist and zoologist Reaumur. For such production to become profitable, it is necessary to contain and feed hundreds of thousands of spiders. But to feed them, it would be necessary to catch several million flies every day, which was completely impossible to implement in practice.

However, people still use the web, even today. For sights (crosshairs) in various optical instruments (microscopes, telescopes, sights, etc.), spider webs are simply ideal. Microbiologists have also found use for it, developing a unique air analyzer using it.

The cross spider is launched onto a special frame, fed, and the spider weaves its web based on this frame. Then air is pumped through a frame with a net, and the thinnest web perfectly captures the microbes that are in the air. This method of air analysis has been recognized as the most effective of all existing in the world.

IN folk medicine Since ancient times, spider webs have been used to disinfect open wounds. Research confirms that spider webs kill pathogenic bacteria, and with its help, drugs were developed that are harmless to animals, but deadly to all kinds of bacteria. As you can see, the cross spider is extremely useful for humans, in every sense.

Cross spiders are a genus of the class of arachnids, numbering about 2 thousand species. They are widespread and are typical representatives of their class.

Crosses live in forests, gardens, and meadows. They weave webs between branches, on buildings, etc. They feed on small insects.

The size of representatives of cross spiders is from 1.5 to 4 cm in females and about 1 cm in males.

The chitinous cuticle of cross spiders is quite thin. The body is divided into a small, slightly elongated, non-segmented cephalothorax and a large, in comparison with it, non-segmented, rounded abdomen. A lighter pattern in the form of a cross is formed on the top of the abdomen. Hence the name of these spiders.

There are four pairs of walking legs on the cephalothorax. In front of them are chelicerae (jaws) and pedipalps (jaws). With the help of the first, the cross spider kills the victim. Their terminal segments are transformed into claws, in which the ducts of the poisonous glands open. The poison has a paralyzing effect. The pedipalps are used to hold the victim, turn it over, and also contain many organs of touch.

At the end of the abdomen there are six arachnoid warts (three pairs). The ducts of the arachnoid glands open in them, of which there can be about 1000. Cross spiders secrete various types cobwebs Some are sticky, others are more durable. When released, the web hardens in air, turning into a fairly strong thread. Spiders weave trapping nets, shelters, cocoons from their webs, and use them to bind prey. The web of the cross spider consists of a strong polygonal base and radial supports and sticky concentric circles. A thread extends from the central part of the web into the spider's shelter. The vibrations of the web when a victim gets into it are transmitted along this thread to the spider, and it crawls out of the shelter.

The cross spider injects not only poison into the victim, but also digestive juices, which break down its tissues, turning it into a liquid pulp. Extraintestinal digestion lasts about an hour. The spider can only eat liquid food, which is completely digested inside it. digestive system. Suction of food occurs thanks to the muscular pharynx. There is a stomach, a branched midgut into which the liver ducts open. This is where suction occurs. nutrients into hemolymph (the blood of arthropods mixed with lymph). Undigested residues go into the hindgut and are excreted through the anus.

The circulatory system is characteristic of all arthropods: open. On the dorsal side of the abdomen there is a tubular heart. From the heart, hemolymph is pushed through the vessels to the front of the body, then it pours into the spaces between the organs and flows in the abdominal direction, where it is enriched with oxygen. After this, the hemolymph is again collected in the vessels and sent to the heart.

The respiratory system of the cross spider consists of a pair of pulmonary sacs and tracheae. The lungs are located in the anterior part of the abdomen and contain many leaf-shaped folds in which a lot of hemolymph flows. Tracheas are thin bundles of tubes that penetrate the body. They do not need hemolymph as an intermediary for oxygen transfer.

In cross spiders, the excretory organs are represented by the Malpighian vessels, whose ducts open into the extension of the hindgut (cloaca), and the coxal glands, the ducts of which open at the base of the first pair of walking legs.

In the ventral nerve cord of cross spiders, the ventral ganglia merge. There are 8 simple eyes, which, like all arachnids, have poor vision. The organs of touch, represented by sensitive hairs, are well developed. There are organs of smell and chemical sense.

Cross spiders exhibit sexual dimorphism. Females are larger and kill males after fertilization. The gonads are paired, their common duct opens on the abdomen. The male delivers his reproductive products to the female using the pedipalps. After fertilization, the female weaves a cocoon using a soft silky web. Next, it lays eggs in a cocoon, in which small spiders develop, i.e., development in cross spiders is direct.

The first spiders appeared on the planet about 2.5 billion years ago. Thanks to their extraordinary adaptability and vitality, they gave rise to more than 30,000 species of modern spiders, which have settled in all inhabited latitudes. One of them is Araneus diadematus - the cross spider.

On the upper side of the cross's abdomen you can see light brown or white spots forming a cross. Representatives of Araneus diadematus cannot digest food themselves, so they are characterized by external digestion. It releases digestive juices into the body of the victim caught in the net, which slowly digest it. The cross remains to suck out the nutrient mixture. Oral apparatus piercing-sucking type. It feeds on small insects, such as fruit flies, flies, and less commonly bees and wasps.

Male spiders are smaller than females. When courting, the male spider, so that his girlfriend does not eat him, carefully approaches the edge of the web and tugging the threads with his front legs, waits for the female to respond to him with the same movements. And only after this the gentleman decides to go on a date in the hope of not being eaten. After mating, the spider dies. The female weaves a special cocoon from the web for eggs (lays it in the fall). She wears the cocoon on herself for some time. Then he hides it in a secluded place. Juvenile spiders appear in the spring.

The cross spider, a common inhabitant of our gardens and forests, produces a long thread to build its circular trapping net. The web is pulled out from special arachnoid warts. These glands are located at the end of the abdomen and each of them contains about a hundred arachnoid tubes. The most difficult task at this moment is attaching the first thread. Araneus diadematus sits and waits for the wind to blow and carry its free end of the hanging thread to the place where it will stick. And only after this the spider begins to create a frame of radial rays. The adhesive thread consists of twisted thin fibers coated with a layer of mucous enzyme. The web is several times stronger than natural silk thread. Back in the Middle Ages, attempts were made to use spiders to create super-strong fabrics, which were never successful. It turns out that cross spiders are staunch individualists and completely refuse to work in a team. After the hunt, when the web dries, the cross spider eats it, leaving only the first thread. Then he starts building a new one. It turns out that the shape of the web can determine the state nervous system this creature. Research has shown that under the influence of psychotropic drugs, the cross spider weaves a holey and incredibly crooked web.

Video: Cross spider weaves a web. Araneus diadematus

Photo: The structure of a female cross spider, view from the ventral side.

The cross spider is a prominent representative of the orb-web spider family. They live almost everywhere, except perhaps for the northern part of the planet and the hot south. The cross spider is the most common species of its family, in which scientists number approximately thousands of representatives.

Crusaders also live in wildlife, and in residential areas. Hides in dark places and crevices.

The crossbreed's lifestyle is nocturnal. During the day he sits in his shelter, not far from his web. They wait for prey to get caught in the web. And as soon as the insect gets into the web, the vibration of this web begins, the spider immediately becomes active and rushes towards the victim.

You can recognize a cross spider by its color.

On the top of its abdomen, a light cross is clearly visible, thanks to which the spider got its name.

The round belly of the spider itself has a dark brown tint, the color of the spider and its cephalothorax with 8 eyes and the same number of legs. The location of the eyes (in a circle) allows him to observe what is happening around him. And his paws are different the highest level sensitivity.

Female crosses have a larger body size - up to 3 cm, while the male is much smaller - up to 1 cm.

The main diet of cross spiders is small insects- aphids, midges, flies, mosquitoes. The crosskiller kills its prey caught in the web with the help of teeth with poison. When the spider is hungry, the prey is immediately eaten by it. If the hunter is full, he braids the caught insect with a web and hides it in a secluded place, only for him. famous place for the future.

Reproduction of cross spiders occurs in this way: the male attaches himself to the side of the female’s web and gives her signals so that she notices him. Immediately after short mating games the male, as a rule, dies.

And the female begins weaving a cocoon, in which, after maturation, she will lay eggs. At first, the female wears a cocoon with clutches on her abdomen; she looks for a secluded place where she can put it so that nothing and no one can prevent her cubs from hatching.

Symptoms of cross bites

For large animals and humans, the venom of the cross spider is not particularly dangerous, because it is too small to cause significant harm to a large organism.

Maxim, when it is possible to kill a mouse or a rat with this dose.

And yet, the bite of a spider of this species is not completely harmless. If you accidentally fall into the web of this arthropod creature, a person may still suffer from its bites. After all, the spider takes as a victim anyone who causes its “catching net” to vibrate. And for the purpose of self-defense, of course, the spider will bite anyone.

The cross can also bite when a person tries to pick it up.

The clinical picture of spider bites will be as follows:

The bite site turns white and looks like a bee sting;
The spot grows the size of a nickel and turns red at the edges;
Swelling at the puncture site;
A burning sensation at the site of the bite.

And if a person suffers from allergic reactions, then it may well be that the bite of this insect will cause the following symptoms:

General weakness of the body;
Skin rashes in the form of red spots;
Headache;
Painful syndrome in the limbs;
Increase in body temperature;
Hardening at the site of the bite.

As a rule, greater sensitivity to cross bites is noted in childhood and for allergy sufferers.

Therefore, these groups of people may experience not only the symptoms described above, but also develop more serious complications in the form of suffocation, intense swelling, even disruption of the cardiovascular system.

When such a clinical picture develops, it is very important to immediately call a qualified medical team and hospitalize the victim for adequate therapy and constant medical supervision.

First aid

Despite the absence in medical practice of deaths from spider bites, the victim still needs help in these cases.

Therefore, when bites from these individuals of the arthropod family are detected, the following measures must be taken:

The bite site must be washed warm water with soap. In this way, micro-dirt particles are washed away from skin, which prevents infectious microscopic agents from entering the wound.
The affected areas are covered with cold compresses (you can use ice cubes or a bottle of cold water). Such a compress will help relieve pain and prevent possible swelling.
If a migraine (headache) or a rise in body temperature occurs, the victim can be given a drink.
In case of manifestation allergic reaction Oral antihistamines should definitely be used. It is also necessary to provide the victim with plenty of fluids until the doctor arrives.
Make sure that the victim does not scratch the wound at the site of the bite. Otherwise, it will cause infection with the subsequent development of various complications.

In cases of a child under 6 years of age being bitten by a spider, you should immediately go to your doctor or call an ambulance, since the venom of this type of spider is very toxic and dangerous for a child’s body.

Prevention

It is quite possible by adhering to certain rules behavior in direct contact with wildlife, prevent spider bites.

In case of a planned overnight stay in nature, during a hiking trip, it is important to take it with you and use it there. special means protection against insects (external repellent preparations).
Be sure to carefully close the entrance to the tent.
Before going to bed, you should carefully check all bedding and sleeping clothes to ensure they are free of any insects.
The same thing (see point 3) should be done immediately after waking up and when packing your things for home.
When choosing clothes for a hike, you should take things that cover as much as possible all parts of the body.
If you see a cobweb on the way, it would be better to avoid it, trying not to touch it with your hands or clothes.
During the hike, try to avoid abandoned buildings, sheds, barns and other dark places where there may be different types spiders in a large cluster.
You should definitely teach your child all these rules of behavior in nature in advance, and explain to him the dangers of direct contact with arthropods.

This is interesting

The cross spider, when hungry, is able to eat as much food as it weighs.

If too much gets caught in his web large insect or poisonous - the spider breaks off its web so that the inedible prey simply falls down.

One hunting web of a cross spider consists of 20 m of “thread”.

In ancient times, the spider's web was considered a good antibacterial agent. Therefore, when a bite is detected on the body of a given spider, you can attach its own web to it to avoid the spread of the toxin throughout the body.

Possible consequences

The venom of the cross spider is epeirotoxin. It is completely absorbed and eliminated from the human body within 24 hours. At the site of the bite there may still be some time is easy swelling.
When scratching a cross bite, it is possible that an infection may be introduced through the wound and a purulent process may develop.
You cannot cauterize or heat the site of a cross bite; this can cause a backlash in the form of necrosis of the soft tissue around the wound.