All spider (insect) species.

Species of good spiders suitable for breeding: birdcatcher spider: brown, individual large, generally about 7 centimeters long, some up to 10 centimeters long, produced in China's Guangxi, Yunnan and Vietnam, Myanmar and other countries. Chinese tarantula: densely covered with black, white and yellow fine hairs, the cephalothorax, the back of the brown, the center has a yellowish brown longitudinal spot. Produced in Shaanxi, Shandong, Henan and other provinces. The spider has a body length of 3-5 centimeters, the back of the cephalothorax is black-brown, the chelicerae are black, and the antennae are yellow. 800-900 young spiders are bred by each female. Every 400-500 spiders can produce 1 gram of poison. The spider is produced in the southern districts of China. White-fronted Giant Crab Spider: This spider has a wide, short, and flat body, and its legs are stretched out to the right and left to allow it to walk across the street, so it is one of the common indoor spiders, and it produces 1 gram of venom for every 800 to 1,000 spiders. The spider is mainly distributed in Shaanxi, Shandong, Sichuan, Jiangxi, Guizhou, Yunnan and other provinces and regions. There are about 40,000 species of spiders in the world Spider family 1. file excerpt Spiders, Apis mellifera, Arachnida. The body is divided into cephalothorax and abdomen, with a ventral stalk between them. The abdomen is not segmented. Chelicerae are mostly pincer-headed. Cephalothorax with four pairs of steppers, abdomen with spinnerets. Respiratory organs include one or two pairs of book lungs, or both trachea. There are many species. Such as the wall line, round web spider, the new woman and so on. The blood of the spider is greenish-colored. Spiders are carnivorous. Spiders without webs, such as tarantulas, jumping spiders, crab spiders, are nomadic predators. Webbed spiders, such as garden spiders, use their webs to catch insects. The spider silk is sticky, and when the insect sticks to the web and struggles, the garden spider immediately climbs onto the web from a hiding place, pierces the insect's body with its chelicerae, injects venom into the insect to paralyze it, and then secretes digestive juices to dissolve the insect's body tissues into liquid food that the spider is able to suck up. Most of the insects that spiders prey on are pests, so spiders are animals that are beneficial to people. There are about 1,000 species of spiders that have been discovered in our country. Indian spiders can not eat for 18 years. There is a big difference between male and female spiders. Most male spiders are smaller than the female body, some species of female body more than male body 1000-1500 times, so the spider mating, as the praying mantis, the male body is often eaten by female spiders in danger, so the male spiders want to mate with female spiders, you must be careful to explore beforehand female spiders whether to promise. 2. 2. strange spiders Spiders are the most common animals. There are about 40,000 species of spiders in the world, and they are found everywhere except Antarctica. Some are ugly, some are staggering, some can walk and jump, and some are very strange. "In the tropical forests of Panama, there is a small spider with a body length of only 0.8 millimeters, which is probably the smallest spider in the world. "Spider with a Weird Name" Among all the animals, the one with the weirdest name is a blind spider that lives in some caves on the Hawaiian island of Kaua'i. This is the eyeless big-eyed spider. This is the eyeless big-eyed spider. It belongs to the family of big-eyed spiders according to its characteristics, but it is called "big-eyed" because it is blind due to the fact that it lives in a cave. "The red chelid spider is a kind of mother-eating spider. The young of the red chelid spider attach themselves to the mother's body and eat her, and the mother quietly lets them eat her, but after one night, the mother is eaten by the young and dies. "Hunter Spider" is the world's largest spider found in Australia. The big one is about half a catty heavy, with eight legs, ugly, but it is a good hand to catch mosquitoes, where the mosquitoes dare to come to the crime of no life, has the hunter-like instincts. At the same time, the hunter spider contains a lot of protein, is the indigenous people's best food. "Bird-eating spiders" In South America, there is a very large spider, the largest is as big as a duck's egg, spits out the silk is thick and firm, in the woods to make a web, often use the web to catch small birds. "In Colombia, there is a peculiar "throwing spider" which, instead of pulling a web to catch food, rolls its silk into an orb, and when there is a moth, it snuggles up and accurately throws the ball of sticky silk, hitting the moth and pulling it along, making it a delicacy. At the same time, it also releases a moth sex hormone to attract moths. "The World's Most Poisonous Spider" There is a black spider in Australia that lives in bushes or grasslands. It has a venomous sac on its body, in which there is a highly toxic venomous juice. When a human, animal or poultry is bitten by it, there is a danger of losing its life within a few minutes. "A London department store owner Haswell, with two poisonous spiders to guard his store every night, it is wonderful to say, this poisonous spider to the door, thieves have fled to follow. In the past few years, the store has never lost anything. It turns out that this poisonous spider has two kinds of deadly toxins, once it is stabbed, light is unbearable pain, long time will not be cured; heavy will die. "Spiders that conspire with plants to eat people" In some forests or swamps in the Amazon River basin in the Americas, there is a kind of hairy spider living in groups. This spider likes to live near the sunflower. It turns out that the flower is so big and beautiful that it attracts people who don't know what it is. Whether a person touches the flower or leaves, it quickly rolls its branches and leaves over and entangles the person, and then it signals to the hairy spiders, and swarms of hairy spiders come over and eat the person, and the leftover bones and flesh become fertilizer for the sunflower after rotting. "Spiders Weaving Fishing Nets" In Papua New Guinea, the fishing nets used to catch fish are woven by spiders. The spiders do most of the weaving after the base of the web is woven and the "half-finished" web is hung between two trees. The spiders here spit very strong and sturdy silk, woven into the fishing web, can be used for two weeks. 3. 3. the mystery of the spider's web in Greek mythology, the spider is a weaver incarnation. Indeed, the spider is called the first-class weaver, a spider's web weaving, that is, it is difficult for mathematicians to pick out what is wrong. The spider's web is the foundation of the world. Spider web is quite strong viscosity, small insects once touched, are winged also difficult to escape. The web doesn't stick to the spider itself, because the spider has a layer of lubricant. The small piece of the center of the circle of the spider web is the spider lounge, not sticky, the frame and the radius line does not stick. Spiders typically have six spinners located near the anus. Each spinneret has a conical protuberance with many openings and ducts connected to the silk glands, which produce many different kinds of silk threads. If you look at it under a microscope, you will see that the weavers are like people's dexterous fingers, which pull, comb, and roll the silk into threads as if they were running water. Spider silk is the ****same product of many glands, and it is spun from a mixture of many different and finer silks. The silk is a bone protein that is liquid in the body and immediately hardens into silk when it meets air outside the body. The finest spider silk is only a millionth of an inch in diameter. A spider silk that could circle the earth weighs only 168 grams. In people's minds, they think that spider silk is unbearable, in fact, it is not. And spider silk like the thickness of the wire is not as strong as spider silk, underwater some spider webs can catch small fish. Scanning with a high-frequency electron microscope, see a spider silk is twisted together by two different lines: a dry straight line, can only stretch 20%; another viscous spiral, can be stretched 4 times longer, after the recovery does not sag, this is a "bundle of evil rope". This rope is covered with a layer of gelatinous liquid micro-droplets, each micro-droplet has a trace of dough. When the insect is arrested and struggling to collide with the micro-droplets, which will stretch the mass of silk, increasing the length of the line, of course, will not be broken, but the more you earn more, the more firmly the hoop. Just like the tight band, the tighter the hoop, any Pandemonium Australia Sun Da Sheng to move around and change, straight hoop him rolling all over the place. Spider webs vary in size and shape. Round web spider's web is very large, shaped like a wheel; forest shed spider's web such as shed; orb spider's web like a cage; water spider's web like a clock; grass spider's web is no less than a hammock. Some spiders can also weave a lasso-like web, which swishes in the air. Some spiders can weave a dense web, mounted on grass poles, which unfolds in the breeze, like a sail on a ship. There is a spider in South America that has a very small web, the size of a postage stamp. This spider does not have the patience to wait, always use the front of the four legs tugging at the web, see there is a suitable passer-by, at any time the web over. Guatemala has a kind of spider, always dozens of set together to weave a large web, web color and pattern are very beautiful, local residents use it as curtains. Spider weaving web is concentrated, even if it is outside of the chaos, it is still organized in the weaving of their own web. Weaving a web usually takes only 25 minutes, but if affected by wind, environment, etc., it may take one or two times longer. Once the web is complete, some sophisticated spiders add a safety belt underneath the web. Like other creatures, spiders have gone through a long process of evolution. The earliest spiders pulled a single thread, as monotonous as a clothesline. To this day, in the tropical forests of South America, there is a "fisherman" spider. It is in the woods to choose a light and straight branches as a "fishing rod", at the end of the rod spit out a long spider silk, wrapped around the bottom of a mucus-like mess of silk, made of "fishing line" and "fishing bait ". When insects fly around in the forest to look for food, they see the "bait" fluttering in the wind and often take it as their favorite food. When there is no wind, "fisherman" spiders will use their front legs to pull the spiders, so that the "bait" to and fro, laying a "bewitching array" to lure insects to take the bait. When the insect flies to the "bait", the mucus to catch it, the spider will climb down the silk, the insect swallowed. Although most spiders have four pairs of eyes, but the eyesight is very poor, only those spiders that do not open the web for food can see farther, but only 30 centimeters. Because of this, spiders crawl with a dry silk trailing behind their tails, which is used to keep in touch with their rear paths, and biologists call it a "guide wire". Spider silk is also the spider's lifeline, when it is suddenly shocked from the air, the line will hang it. It also serves as a diffuser, allowing small spiders to let out long strands of silk and let the wind blow them over great distances. American scientists have recently pointed out that the spider web is also a symbolic language, a code that is perhaps the most magical of all biological languages. Through this web, spiders chat with their neighbors, talk to their mates, as well as exhort their prey into submission. The spider is a marvelous creature, and its web is a wonderful work of art. With the development of science, arachnology has now become a discipline, and many people are looking forward to seeing some new wonders of nature through the crystalline layer of the spider's silk. 4. Spiders Helped Napoleon Many spiders weave their webs before dawn, when the temperature is at its lowest. Spider silk contains gelatinous material, it is easy to absorb moisture and lose viscosity, if the air is humid, the wild spider will be sensitive to feel and stop weaving. Making a web in cooler and drier conditions - this characteristic of spiders helped Napoleon win a war. In the late fall of 1794, Napoleon's army attacked the Netherlands in force. The Dutch opened the sluice gates of various rivers and used the floods to hold back the French army. The French army was about to retreat, but received a "spider in a large number of spitting web" report, Napoleon made a snap decision, ordered to stand by. The original. Spiders spit and make webs to indicate that the dry cold weather is coming. Soon, the cold wave really hit, the river and lake ice, the French army stepped on the ice forward, captured the Dutch fortress of Utrecht. Spiders have helped the generals, but did not join the army sequence, it is in the direct participation in the war is far less than in the military bionics.