Spider description of an insect for children. Tarantula spiders

SPIDERS
(Aranei),
a group of arachnids, including mites, scorpions, haymakers, etc. Spiders for a number of signs are close to insects, but clearly differ from them, and these groups are related only by a very distant relationship. A well-known characteristic feature of many spiders is the ability to weave a complexly arranged hawk net (net) from a silk-like substance secreted by the arachnid glands. Some spiders, such as the black weaver spider (black widow) and tropical bird-eaters, can inflict very painful bites that are fatal, but most spiders, although biting, are not dangerous to humans. The name of the class Arachnoidea comes from the Greek. arachne is a spider. In ancient Greek mythology Arachnaya was a girl who was so skilled as a weaver that, summoning the goddess Athena to the very patroness of this craft, she weft a better fabric than she. The disgruntled goddess turned the rival into a spider, announcing that from now on Arachna and all her family will be spinning and weaving until the end of the century. In total it is known approx. 30 000 species of spiders. The length of their torso is from 0.1 to 5 cm. The main food is the liquid tissues of insects, which spiders catch, rushing from ambush or using cobwebs. Spiders are found on almost all inhabited latitudes and altitude marks: they were found on the slopes of Mount Everest at 6700 m above sea level and caught (juveniles) 600 m from the surface of the earth. Some species live in water. Having settled, the juveniles of a number of small species are taken to the ends of grass and other towering objects and, raising their abdomen, begins to secrete the arachnoid thread, which is picked up by a stream of air and, reaching a sufficient length, carries away the animal. Such years occur in certain seasons and are especially noticeable in the "Indian summer", when in the air you can see whole "carpets-planes" from dozens of interwoven cobwebs. This unique way of settling allows spiders to cover huge distances and to reach even the islands lost in the ocean.

Web and the construction of a net. The ability to secrete a spider thread is a characteristic feature of almost all spiders. Material for it is formed in the special glands located in the back of the abdomen, and the so-called. arachnoid warts. Some spiders produce threads of different (up to six) types and use each of them for quite specific purposes. When the spider moves, it continuously allocates a web, which, like a mountaineer, a safety rope, from time to time attaches to the surfaces it passes through. That's why the disturbed spider almost always can, with his legs tucked, fall off the support and, hanging on an extensible thread, descend it to the ground. When the net gets prey, the spider usually flies its web and only then kills with poisonous claws (chelicera) and sucks. Probably the most interesting feature of spiders is the construction of a network of trapping nets. Their forms are very diverse and often very beautiful. Not all spiders use their web for catching insects, but each species weaves it in a specific way, and the resulting design may well serve as a taxonomic feature. The most beautiful, so-called. wheel-shaped, a spider-circle spiders of the family of cross-arms (Araneidae). First the spider climbs to a high place, usually near a path or other open space, and secrets a very light thread that is picked up by the wind and, accidentally hitting a nearby branch or other support, wraps around it. The spider moves on this thread to a new point, along the way reinforcing the web with an additional secret. In a similar way, another two or three relatively thick "cables" are laid, constituting a closed frame, inside which the proper construction will be located. Usually the net is oriented more or less vertically, but some types of spiders build horizontal networks. Between the sides of the frame stretch filaments, radii, connecting in the center, like spokes in the wheel hub. Now, starting near this place, the spider moves to the periphery in a spiral, leaving behind itself a thread attached to the radii, the distance between the turns of which is determined by the swing of its limbs. While the web is not yet sticky, but after reaching the outer frame, the spider is again spiraling, but with denser spirals, it returns to the center, this time forming a thread, which, unlike the previous ones, is covered with droplets of sticky secretion. As this helix is ​​actually laid, the thread of the first non-stick spiral is bitten and discarded. Obviously, it served only as a kind of construction forest. When the net is ready, the spider moves to their center or to a nearby shelter and waits for a flying insect to stick to the web. Usually the whole structure works one night, and by the morning it is in many places torn. One of the most beautiful networks weaves the usual appearance of Argiope aurantia, a large spider with a black and golden pattern on the body. For its extensive spiked tent, a zigzag filament that runs vertically through the center of the structure is characteristic. The form of the trapping network of other species is completely different. For example, in representatives of the genus Frontinella, it resembles a cup on a saucer. In funnel spiders (the Agelenidae family) the net is similar to the net, and spiders of the Gnaphosidae family build tubular shelters from the web under rocks and other objects, where they hide between the outlets for hunting. An unusual wheel-like network of golden threads builds the view of Nephila clavipes. For this large spider, common in the southern United States, are characterized by legs with tufts of hairs. The ability of spiders to secrete a silk-like thread repeatedly led to attempts to use them like silkworms, but these experiments had no success. The main difficulty is that spiders need to be fed live insects, and for a fairly quick one kilogram fiber it takes more than 1.3 million. spiders! At one time cobwebs were made by crosshairs of optical instruments, for example theodolites, leveling and telescopes. Many spiders do not build networks at all and just hunt prey from ambush. This is typical of representatives of such families as spiders-wolves (Lycosidae), spiders-horses (Salticidae) and ptichaeids-terafosides (Theraphosidae). Spiders-horses, for example, track down victims, using sharp sight, and overtake them with one jump.

SPOONING THE SPOKE NETWORK. From the middle of the upper thread the spider descends on the cobweb to the bottom. From the middle of this web, divided as a result into two "radiuses", it stretches the third "radius", the second end of which attaches to the upper thread, and continues such movements to the center and from it until it establishes all the "spokes" of the wheel-like network. Its "hub" it strengthens with several spiral turns.

A variety of spiders. We have already mentioned spider-spiders and spiders, not building networks. Let's consider in more detail their various types.
Terafosides.  One of the most interesting American spiders is the Dugesiella hentzi. This is a large animal, the span of its legs reaches 15 cm. The body color is dark brown, so that in general the animal is, to put it mildly, unattractive. It's accepted to be afraid, but this spider is relatively harmless: its bite is no worse than a bee. It is common in the south-west of the USA and leads a more or less nocturnal lifestyle. The main enemy of this species is a wasp from the genus Pepsis, whose name translates from English as "a large blue tarantula hawk". She paralyzes the spider with a sting and pulls it into her mink for feeding the larva. The bites of some tropical terafosides are very toxic even to humans. Representatives of this family often live up to 20 years.
The kenyzides.  In some areas of the US there are interesting spiders from the family Ctenizidae. They are different in size and reach a length of 2.5 cm; the color of the massive body is dark. These spiders are digging in the ground of the mink and lining their walls with cobwebs. A characteristic feature of such shelters is a tightly fitting door, which is very difficult to open when the spider holds it from the inside. It is established that in this case the animal can withstand a pulling force equal to almost a pound: for man it is equivalent to 10 tons. From time to time, the kenyzides emerge from the mink for hunting. Their main enemy is one of the types of wasps, able to open the door of their lair or attacking spiders when they are outside.
Real bird-eaters (Aviculariidae).  This family includes the world's largest spiders, attacking the tropics even on chicks. The length of their torso reaches 5 cm, and the span of the legs is 18 cm.
Spiders are the "archers".  Representatives of the genus Mastophora probably use the most unusual way of catching prey. First, the spider pulls a strong thread between the branches of a web, usually over a stream where small midges curl. Approximately in the middle of it, he attaches a hunting string with a heavy sticky lump on the end and holds it with the front leg. When an insect flies nearby, he wags this thread like a lasso, trying to hook the victim.
Spiders are excavators.  Representatives of the genus Atypus weave from the web a tight, closed at the ends tubule with a diameter of approx. 2.5 cm, which comes out of their mink and lies on the ground, usually under a tree, lasting for a distance of about 30 cm. The spider hides inside the tube and, when an incautious insect sits on it, grabs it right through the arachnoid wall.
Spider-boaters (Thomisidae). These spiders are also called spiders-crabs for their external resemblance to the latter. They are medium-sized, often brightly colored and usually hide in flowers, where they hunt for insects that flew past nectar, such as bees.
Water spiders.  In the US, relatively large spiders of the genus Dolomedes are common, who can run on the surface of standing water and even dive under water, holding on to plants. These spiders feed on insects, fish fry and tadpoles. In Europe, a silverback spider inhabits under water in places where the current is weak or nonexistent, most of the life. Probably, this is the most unusual spider in the world, given that he, like all members of his class, breathes atmospheric air. In spring, it goes under the water and stretches there between the plants a horizontal network of cobwebs with very small cells. Then, rising to the surface, he expose the end of the abdomen, covered with non-wetted hairs. Between them, air is collected, which the spider, in the form of a bubble held by its feet, drags it into the depths and shakes it off under its net. That does not allow bubbles to float and after multiple such voyages arches a bell the size of a thimble and even more, propped from the inside by an air chamber. The spider hides inside it, inaccessible to most enemies, immediately lays eggs, takes out the young and winters. The bells of the male and female living separately are connected to each other by a bridge of cobwebs.
Poisonous spiders. Spiders are afraid to be afraid. Indeed, almost all of them are armed with poisonous claws, but for humans only a few species are dangerous. In the United States, one must beware of two of them - the "brown hermit" (Loxosceles reclusa) and the "black widow" (Latrodectus mactans). The length of the first is only 0.6 cm. This spider lives in the Midwest, often in dwellings, where it hides behind furniture. On the spot of his painful bite a sore is formed, which can never completely overgrow. Spider "black widow" is found almost throughout the US. The bite of this species causes severe pain and can lead to death due to a neurotoxin injected into the wound. The female body is brilliantly black with bright red spots. On the underside of the abdomen, there is usually a red pattern in the form of an hourglass. The male is much smaller than the female, but is similar in color. The name "black widow" is explained by the fact that the female often eats the partner after mating, which, incidentally, is quite common among spiders. This species is non-aggressive, and spiders usually try to hide from a person, but if you take them in your hands, they often bite.
The structure of the spider.
  Outside structure.  Spiders, unlike insects, do not have antennas (antennae) and jaws. The body is covered with an external skeleton (exoskeleton) and consists of two sections - the cephalothorax formed by the merged head and chest, and the abdomen. They are connected with each other by a narrow stalk. At the anterior end of the cephalothorax are simple eyes, the location of which serves as an important classification feature. Most spiders have four pairs. The cephalothorax carries six pairs of limbs. In front of the head are two downward-looking chelicers, each of which ends in a sharp claw. It opens the poisonous glands located in these extremities. The second pair - pedipalps, used as palps and grasping structures. In sexually mature males their ends are modified and used for mating. Between the bases of the pedipalp is a small mouth opening. All spiders, in contrast to insects, have four, not three pairs of walking legs. The last segment of each of them carries at least two claws, and some species have much more. The cobweb glands open on the underside of the abdomen usually with six arachnoid warts. In front of them are located small breathing holes - spiracles, or stigmata.

Internal structure. Spiders feed on liquid tissues sucked from their victims, mainly insects. The digestive system of spiders consists of a specialized sucking stomach, another stomach with blind outgrowths and an intestine surrounded by the digestive gland ("liver") and opening at the end of the body with an anus. The circulatory system is not closed. It consists of the heart, arteries, veins and spaces (sinuses) between organs, washed with colorless blood (hemolymph). The heart is a pulsating tube with holes (ostia), stretching along the dorsal side of the body cavity. Unlike insects, it is not divided into several chambers. Spiders, as already mentioned, breathe air. The organs of respiration are trachea and lungs, called pulmonary books. Each such book consists of a pouch, one of the walls of which is composed of numerous leaf-like folds resembling pages. They exchange oxygen and carbon dioxide between the blood and air. Outside the lungs open spiracles. The most primitive spiders have two pairs of pulmonary books, the more advanced ones have one or both replaced by tracheas penetrating the body. The excretory system consists of a pair of coxal glands in the cephalothorax and the so-called. Malpighian vessels in the abdomen that open into the intestine. The nervous system is similar to that of insects. It consists of the ventral trunk with branches that branch out to different organs and ganglia collected in the cephalothorax into a large subacute node, over which is the supra-pharyngeal "brain". On the pedipalps and walking legs there are sensory hairs. Genital organs are represented by ovaries in females and testes in males. Their holes are located at the bottom of the abdomen.

INTERNAL STRUCTURE OF THE SPIDER. Spiders are pretty close to insects, but at the same time they are clearly different from them. Their body is divided into two sections - the cephalothorax and the abdomen. The cephalothorax carries six pairs of limbs: four pairs of walking legs, a pair of tactile pedipalps similar to them, which have been mutated in males to participate in mating, and a pair of chelicers located in front of the mouth, armed with claws with ducts of poisonous glands immediately present. The digestive tract of spiders passes over the largest of their ganglia (the pharyngeal) and the main nerve trunks. A special sucking stomach drains the victim's liquid tissues. At the back it is connected to two blind gastric tubes, bent forward and reaching the poison glands; On the sides of these tubes four more pairs of blind outcrops go to the bases of the walking legs. They accumulate digestive juice. In the abdomen, the intestine passes, into which the ducts of the thin digestive ducts that form the "liver" flow. Excrement accumulates in a rectal (stericoral) sac and is discharged through the anus outwards. Malpighian vessels perform kidney function.

Reproduction.  Fertilization in spiders is a very complicated process. After mating, the female often eats the male. Eggs are deposited in the arachnoid cocoon, which the female carries with it or attaches to a solid object, for example, a plant. In some spiders, including the above-mentioned species of Argiope aurantia, these cocoons are well visible in trees, especially in winter after the fall of the leaves. Hatching eggs from the eggs soon begin to weave their own trap networks or settle through the air, attaching themselves to volatile cobwebs.
  see also INSECTS.

Encyclopedia of Collier. - Open Society. 2000 .

Spider-tarantulas belong to the family of spiders and sub-order of migalomorphs. Representatives such as Arthropods and the class of the Arachnids differ in their large size and very wide distribution.

  Description of the tarantula spider

Tarantula spiders are also well known under the name of spider-bird species (Thierarhosidae). This arthropod is distinguished by a very exotic appearance, with characteristic long hairy limbs and catchy juicy color, which becomes more intense as a result of a new molt.

It is interesting!  The surface of the body, including the legs of the tarantula, is covered with a cluster of thick villi, which gives the spider a very fuzzy appearance, and the coloring is very different, depending on the characteristics of the subspecies.

Appearance

The number of species of tarantula is slightly less than a thousand, and the appearance can be dramatically different depending on the species characteristics. Characteristics of the appearance of the most common tarantulas is as follows:

• Asanocuria geniculata  - an interesting and fairly large ground view with a very calm temperament and absolutely not aggressive. The size of the body of an adult specimen is 8-10 cm with a foot sweep of 18-20 cm. It is distinguished by a high growth rate;
• Anactosuria musulosa  - medium size, very active, moderately aggressive and highly valued by lovers of domestic spiders, a normal / terrestrial species. The size of the body of an adult specimen is 4.5-5.5 cm with a foot span of 12-13 cm. It is distinguished by a high growth rate;
• Expansion of albicars  - very beautiful, with sufficient mobility and non-aggressive terrestrial tarantula. Absolutely non-aggressive. The size of the body of an adult specimen is within 6-7cm when the legs are spread within 14-16 cm. It is distinguished by an average growth rate;
• Sarine (Ex Avisularia) vеrsiоlor- one of the most beautiful, bright and spectacular representatives of tree species. The size of the body of an adult specimen reaches 5.5-6.5 cm with a foot sweep of 16-18 cm. It is distinguished by an average growth rate;
• Ceratogyrus darlingi  - refers to a very aggressive, but slow normal tarantulas, weaving a dense and abundant cobweb and having a horn in the region of the cephalothorax. The size of the body of an adult specimen does not exceed 5-6 cm when the legs are swept within 14 cm. It is distinguished by a high growth rate;
• Сhilоbrасhys dysslus «Вlасk»  - a large Asian normal tarantula with a really black color at any stage of instara. The adult female has a bright coal-black color. The body size of an adult specimen is 6.5-7.5 cm with a foot sweep of 16-18 cm. It is distinguished by an average growth rate;
• Сhilобасhys dysslus «Blue»  - a large Asian normal tarantula with a bright blue-violet color, very aggressive and fast. The size of the body of an adult specimen is 5.5-6.5 cm with a foot sweep of 16-18 cm. It is distinguished by an average growth rate;
• Chilobrahys sp. «Kaeng Krashan»  - a rare Asian terrestrial / normal tarantula with a dark coloring of the limbs and the body, up to the coal-black color. The size of the body of an adult person is 6.5-7 cm when the legs are swinging within 16-18 cm. It is distinguished by an average growth rate;
• Chromatoptera syáneorubessens - one of the most beautiful and quiet species, weaving abundant snow-white web, against the background of which it looks especially original. The size of the body of an adult specimen is 6.5-7 cm with a foot sweep of 15-16 cm. It is distinguished by an average growth rate;
• Syoragorus lividum  - incredibly fast and quite aggressive, with a rich bright blue color, the normal representative. The size of the body of an adult specimen is up to 5.5-6.5 cm with a foot span of 15 cm. It is distinguished by an average growth rate;
• Davus fassiatus  - magnificent in its behavior and color, the terrestrial / normal species of tarantula. The size of the body of an adult specimen is 4.5-5.5 cm, with a foot span of 12-14 cm. It is distinguished by a high growth rate;
• Euraliastrus sastrestratus  - one of the unique representatives of terrestrial tarantulas with a very original color and a well-defined hairline. The size of the body of an adult specimen is 7.0-7.5 cm with a foot sweep of 16-17 cm. It is characterized by a low growth rate.

Especially popular is the Epheborg cygnognathus, which is a very bright and colorful representative of tarantulas. The body of this spider is painted in an original burgundy-red color with pronounced elements of a shade of green flowers. Segments of extremities have transverse yellow stripes, and chelicerae are distinguished by a clearly noticeable and bright bluish-violet color.

Lifestyle and character

Species features have a significant impact on the way of life and the main features of the nature of tarantula spiders. All species of tarantulas are classified as poisonous spiders. Different subspecies of such arthropods lead a different lifestyle.

Some of them live exclusively on trees, and many of them live in the ground or in special burrows.  For some species, the location in the bushes is characteristic. Tarantula spiders hunt from ambush, motionless and long waiting for their prey. Such arthropods are not very active, especially if the feeling of hunger is completely satisfied.

How many lives a spider tarantula

A significant part of the species of tarantula spiders is arthropods-long-livers, which, under natural conditions and when kept in captivity, can survive for several decades. A very characteristic feature of tarantulas is that females can live much longer than tarantulas.

The life span of tarantula spiders depends on the temperature conditions, as well as the abundance of the forage reserve. When the feeding processes are tightened, the life expectancy increases, and in sufficiently cold conditions the metabolism slows down, resulting in a slower development of such arthropod.

Protective mechanisms

For self-defense, the species Braschyretha albicers and Braschypelma vеrdеzi, as well as some other species, discard their protective hairs located in the abdominal area. And the species Avicularia sp., Becomes in the event of danger on the defensive stance, and also raises the abdomen and can attack the attacker with its feces. However, due to the very high speed during the movement, this species prefers to simply hide from its enemies by flight.

As the long-term observations show, tarantula spiders possess three types of protective mechanisms that protect the arthropod from various external enemies:

• biting;
• use of burning hairs located on the abdomen;
• attack with spider excrement.

The bites of the spider-tarantula combine not only the painful sensations that accompany the process of piercing the skin, but also the effect of the injected poison. The reaction of the body to the bite of a spider is strictly individual. Some people have mild itching and headache, and a highly sensitive person can feel a strong fever and marked inflammation. However, to date, human deaths from the bite of any tarantula are not fixed.

Burning hairs are located on the abdomen of tarantulas, and in contact with skin, a person may have a fairly strong allergic reaction. This type of protective mechanism was formed in arthropods to protect the laying. Similar hairs are woven by spider females into cobwebs or directly into a cocoon with eggs.

  Habitat and habitats

Tarantula spiders have become quite widespread around the globe, with the exception being only Antarctica. Such arthropods live in Africa and South America, on the territory of Australia and Oceania, and also less frequently occur in European countries, where their habitat is limited to the southern part of Italy, Portugal and Spain.

Some tarantula spiders prefer to settle in damp tropical as well as equatorial forests. The most drought-resistant species inhabit semi-deserts.

Nutrition, production of tarantula

The diet of a tarantula is not too diverse. Such spiders have an external type of digestion. The captured prey is immobilized, after which digestive juice is introduced into it, and after a certain period of time, not exceeding a day, the tarantula sucks out the liquid nutritional content from its prey.

A significant part of the diet of the tarantula spider is represented by living insects, the sizes of which are not too large, which prevents the articulation of the arthropod with the victim. The largest representatives of tarantula spiders are able to use as food small vertebrates in the form of naked mice. Also, in conditions of captivity of arthropods, you can feed small pieces of lean raw meat. The diet of sexually mature tarantula spiders often includes adult crickets, grasshoppers, large species of cockroaches, flour worms.

It is interesting!  The number of fodder insects in the diet of an adult specimen, as a rule, does not exceed a quarter or a third of the body weight of the spider itself.

When keeping young and often shedding tarantula spiders in captivity, it is necessary to feed about a couple of times a week, and adults should receive food every seven or ten days. The frequency of feeding, as a rule, increases before the onset of the breeding season. Refusal of food is observed at the stage of active moulting, with a low-temperature regime or in conditions of severe stomach overflow.

Tarantula spiders, for reasons undefined at the present time, may well starve for almost two years, and some species have the ability to swim and even dive.

  The most famous form of spider web is spiral. First of all, the spider selects a suitable place with branches located at the correct distance from each other. He spins the upper skeleton thread and constructs a pair of radial strands. Then additional wireframe and radial threads are spun, then the remaining radial strands. All this construction is constructed of strong non-sticky silk. Then the spider moves spirally from the perimeter to the center, weaving a less stretched, elastic, sticky silk thread for catching prey.
  Spiders-silkworms build cobwebs of all shapes and sizes. Some weave stunningly correct geometric patterns. Networks - others just a tangle of threads in a dark corner. But when the victim touches the web, silk threads quickly entangle it. When the web is damaged, the spider eats the silk, recycling it for the next time.
The saliva of all spiders is poisonous. But only 30 species of poison are strong enough to cause harm to humans. Some of the deadliest species are the black widow, Latrodectus, inhabiting warm countries, Australian funnel spiders and the Brazilian spider myco.
  Some spiders, like the Costa Rican crochet, weave a well-marked zigzag region in the center of the web - the stabilimulus.
Spider silk is one of the most durable materials. Its strength is much higher than the strength of a steel thread the same thick. Different types of spider webs are used for different purposes. The web of cocoons is thick and smooth, while the silk of trapping nets resembles sticky rubber.
Spiders-hunters live in tropical forests. They are quite clever and strong enough to catch prey without using a web of cobwebs.

  The largest spider is the spider-bird Theraphosa leblondi from South America. Together with the legs, it reaches 28 cm across. Spiders hunt other spiders and even lizards, birds and small mammals like mice!
  The agriopa spider swaddled the moth with silk threads of cobwebs to eat later. If the spider has enough food, it hides the victim nearby, leaving it bound, but alive.
  Spiders-dinopids weave not a large web and keep it with the first three pairs of legs. Huge eyes vigilantly hunt down prey, and when it is within reach, the spider throws a net on it.
  Spider wolves do not weave a cobweb. On their long legs they run fast on the ground, rocks and bark of trees, chasing prey. Female spiders-wolves wear white cocoons with eggs under their bodies.

Arachnids
  - Class of Arthropods
  - About 80,000 species
  - Adult individuals have 8 legs

Spiders
  - 50,000 species
  - In the world, in all biotopes
  - The body is divided into the cephalothorax and abdomen
  - Weave a web

There are many species of tarantula spiders. Some of them are domesticated and often meet as pets, while others are not very popular and have not been studied even by 10%. Each species of spider-tarantulas has its own peculiarity in the nature and possibilities of keeping at home. With the right choice, a representative of this family will become an excellent friend and pet.

To the species Aviculariinae are 6 genera of tarantulas, which live in the northern part of South America. This family is also called real spider-tarantulas, as many representatives of Aviculariinae are domesticated.

Most species spiders are woody tarantulas living in tropical forests. The character of the representatives of Aviculariinae is calm, sometimes timid. Their poison is practically non-toxic to humans.

The range of Aviculariinae paws is on average 16 to 20 cm, and the body length is 6-8 cm.

Spiders of this species are kept as pets. The most popular representatives are: Avicularia versicolor  and Ephebopus cyanognathus.

You can feed Aviculariinae with crickets, cockroaches and frogs. This kind of medium should be chosen.

This species has 13 genera, whose representatives live in Africa, especially in Saudi Arabia, as well as in Madagascar. The size is medium: 16-20 cm in the span of the paws, 6-10 cm in the length of the trunk.

Little is known about this species, because, thanks to disguise, its representatives are difficult to find. To make a photo of this species of tarantulas, it is necessary to go through the jungle and be very attentive.

On the nature of Eumenophorinae one can only make assumptions. Based on the secrecy of spiders, we can conclude about the average aggressiveness of the species.

Because of poor knowledge and rarity, Eumenophorinae is not domesticated.

This type of spider is usually called baboon. This species includes some of the largest tarantula spiders on the planet: the swing of the paws reaches 30 cm.

Baboon spiders live mainly in Africa. They belong to the terrestrial type of tarantulas, so their silk holes can be found under rocks or in bushes. In the wild, Harpactirinae can hide well, despite the bright color and large size.

Harpactirinae has a relatively strong poison, but it does not pose a threat to humans, unlike the chelicera themselves, which can severely damage the skin.

In general, baboon spiders are not aggressive. They can attack only for self-defense. This does not apply to the genus Pterinochilus, whose representatives are extremely dangerous.

The largest representatives of this species often become domestic pets. Feed spiders better than large insects, and keep in large and deep terrariums.

The species Ischnocolinae combines 5 genera of tarantulas, which inhabit all continents, except for Atlantis.

A common distinguishing feature of these spiders are the shortened hind legs and the presence of a unique pattern on the belly of the female.

Ischnocolinae are of average size and toxic to humans. The view itself was formed recently, so the habits and nature of the spiders are still being investigated.

None of the genera of this species is considered to be aggressive, but they are not suitable for domestication, due to difficult conditions of detention.

This species of spiders of tarantulas inhabits the territory of Asia. Outwardly they are very similar to baboon spiders, because of the large size and shape of the trunk. Most belong to the terrestrial type of spiders, but one of the genera belongs to the tree species.

Ornithoctoninae have a strong poison that is not fatal to humans, but can cause unpleasant sensations, such as swelling and joint pain. Setae on the belly of this species are also toxic.

The nature of all the genera Ornithoctoninae is extremely aggressive. Their defense tactic is a direct attack. Especially dangerous is the genus Haplopelma, because of the habit of finishing off the victim to the end. Accordingly, this species is not subject to domestication.

Phlogius

The species is represented by only one genus, Phlogius Crassipes, whose representatives are often called oriental tarantulas. These spiders live in Australia.

Despite its small size, the eastern tarantulas have a very strong poison that can kill a cat or a small dog. For humans, the toxin is not fatal, but its effect on the body is extremely unpleasant and painful. At the same time, the character of Phlogius is quite calm and balanced.

A distinctive feature of this species of tarantulas is that its representatives prey on medium-sized birds, in contrast to other species. They also feed on large insects and small amphibians.

Poecilotheriinae

The species Poecilotheriinae is famous for its bright color, because of which its representatives are called tiger tarantulas. These tarantulas belong to tree spiders and live mainly in India and Sri Lanka. Despite the fact that Poecilotheriinae has about 15 genera, this species is under threat of extinction. Tiger tarantulas are also the object of attention of poachers, because of their beautiful and diverse coloring.

Feature of tiger tarantulas is fattening of the victim. These tarantulas eat small birds, insects and bats.

The poison of spiders is not the most dangerous, but fast-acting. Also, the species is considered to be aggressive, so its representatives will not be suitable for pets.

The species lives mainly in Australia. These spiders can easily be confused with representatives of Phlogius, however Selenocosmiinae has large dimensions: 22 cm in the span of the paws, 9 cm in the length of the trunk.

Representatives of this species are often called whistling tarantulas, due to the sound that the spider bristles produce during movement.

Spiders are of the terrestrial type. They can be described as calm and closed creatures. Meet the representative of Selenocosmiinae in the wild is very difficult, so so rare photos with the sight of a tarantula spider.

The venom of the whistling tarantula is very toxic, so the species is not to be domesticated.

This species lives in Africa and Asia. It includes 3 kinds of tarantulas.

The main feature of Selenogyrinae is the presence of a special organ consisting of two rows of hair, located between chelicerae.

The venom of the species is almost non-toxic and safe for humans. However, its representatives are not the most calm character, which makes their domestication risky.

Poultry species of this species live in West and Central Africa. They belong to tree spiders.

This species is little known, as spiders use strong camouflage to merge with the color of tree trunks.

Representatives of Stromatopelma, in particular the genus Heteroscodra, are very aggressive. Their poison is also very toxic, but not fatal to humans. For the role of a pet, the appearance of Stromatopelma is not good.

Theraphosinae (terafosin)

This species is widespread in Central and South America and has the largest number of genera. Representatives of Theraphosinae belong to the terrestrial type of spiders.

A distinctive feature of these tarantulas is a low toxicity poison and a relatively small size: 13 cm in the range of the paws, 4-6 cm in the length of the trunk.

Tarantula spiders themselves have a calm and complaisant character. Most of the genera of the species can be planted as pets, in particular representatives Aphonopelma  and Brachypelma. They feed on small insects. It is necessary to create tropical conditions in terrariums.

This species is considered to be the smallest in the family of tarantula spiders: the span of the paws is 8-10 cm, the length of the trunk is 3-6 cm. Representatives of the species live in the south and west of India.

In addition to small sizes, the sight of Thrigmopoeinae is distinguished by the absence of setae. The species is not considered aggressive, but due to toxic poison it is difficult to keep it at home.

Theraphosidae

From the Greek name is translated as "beast" plus "light." Theraphosidae are also known as spider monkeys, rain spiders and baboon spiders. This long-legged tarantula with two claws. Their body is covered with short, shiny hairs. Dimensions of the body are small, from 2.5 to 10 cm. The distance from the end of the hind paw to the end of the anterior (including the length of the paws) is 8-30 cm. The weight of the largest specimens is about 90 grams. Despite the formidable appearance, spiders-tarantulas Theraphosidae do not pose a mortal danger to humans.

The family includes more than 800 species, divided into 12 subfamilies. Previously there were 13 subfamilies and 113 genera.

is the spider an animal or an insect?

1. A spider is not an insect. A spider belongs to a separate group. These are arachnids.
2. A spider is arachnid, not an insect.
   And animals - this is a kingdom that combines insects, spiders, fish, birds, reptiles, amphibians, protozoa, coelenterates, echinoderms and a whole bunch of other rubbish.
3. Spiders belong to a separate group:

   Domain: Eukaryotes
   Kingdom: Animals
   Sub-kingdom: Eumetazoi
   Type: Arthropods
   Subtype: Helicer
   Class: Arachnids
   Order: Spiders

   As a result, spiders are animals!

4. This is a separate class - arachnids. Not an insect! Insects have 6 legs.
5. spider refers to arachnids
6. spider - arthropod (type), arachnids (class).
   insects are also a class. parallel to arachnids.
   ie, arachnids and insects in one type - arthropods.
   but the classes are different - spiders arachnids, but not insects.
7. They are just arachnids.
   And to say it is animals - the kingdom and insects - a class like that is silly. A spider is an animal belonging to a class of arachnids. Insects are also animals
8. A spider can be easily distinguished from an insect: it's enough to count the number of legs: a spider has 4 pairs of legs, and an insect has 3 pairs. Also one of the main differences is that insects have compound eyes, and the spider has singular eyes with lenses. In addition, unlike insects, spiders do not have antennae.
   Although they also have many similarities. Both have an external skeleton (exoskeleton). The solid part of the body is on the outside, while in mammals the skeleton is located inside the body. The heart is located in the back. Breathing is done with the help of a yut or book lungs. Oxygen transports the protein hemocyanin, and not protein hemoglobin, as in mammals.
   In 1758-59, Carolus Linnaeus published the 10th edition of Systema Naturae, in which he classified animals. Since then, biologists have improved the systematic classification of the animal world. According to this classification, there are separate cells, at the base of which there are animals, and at the top are people with very complex systems. With the help of DNA analysis, the location of each animal has become even more accurate than before. This classification is called the taxonomical classification of the animal world.
     It consists of several divisions. Each division is called a type.
     Type Arthropoda consists of animals with an external skeleton (exoskeleton), which protects the body and connects the appendages. Their body consists of 2 parts. The first part - the cephalothorax, and the second part - the abdomen. On these parts are appendages that serve for certain purposes: walking, jumping, eating and other activities. The Arthropoda type is divided into 5 main classes.
   Class
   1. Crustacea (Lobsters, crabs)
   2. Arachnida (spiders)
   3. Diplopoda (centipedes)
   4. Chilopoda (Centipedes (centipedes))
   5. Insecta (flies)
   Accordingly, the spider is placed in a type of arthropod (Arthropoda), arachnids (Arachnida), a detachment of Araneae.
9. Insects (like spiders) are also animals, that is, representatives of the Kingdom of Animals, which should be distinguished from representatives of the Kingdom of Plants. All spiders enter the class arachnids, subtype chelicera, type arthropods. No spider is an insect that form another class of subtype of trachea of ​​the same type of arthropod.
10. The author of the question, apparently, considers the animals only warm-blooded, and even only mammals alone 🙂 But this is so, the remark "by the way."
    Spiders are arachnid arthropods. Although arthropods include insects (a distinctive feature of the group - 3 pairs of limbs), and arachnids (4 pairs of limbs), and crustaceans, they are also decapods (5 pairs of limbs).
11. insect
12. Spider is an animal, but not an insect. The spider has 8 paws, and the insects have 6. But spiders and insects are animals.
13. insect of course)
14. Animal, but not an insect.
15. Insect - Spiders (Latin Araneae, Aranei) - a detachment of arthropods, second in number of known representatives in the class of arachnids: about 42 thousand modern and about 1,1 thousand fossil species.