Curiosity prompts a glimpse into the world of spiders. Modern life, as we know, would never have been possible without their engineering experience. No doubt these are adorable little creatures!
Spiders, along with other insects and crustaceans, are arthropods. Arachnids share this class with ticks and scorpions. Arachnids - they are called that because a long time ago a little girl named Arachne defeated the Greek goddess Athena in a weaving contest. In revenge, Athena turned her into a spider.
- To date, more than 36,000 species of spiders have been identified.
- They exist all over the world, from the Arctic to Everest. The only place to not find them is Antarctica. Spiders live in the back streets, on the bark of trees, in the forest, in the desert, and even walk on water.
- As a rule, spiders live 1-2 years, although there are some types of tarantulas that live up to 20 years!
- Many spiders eat insects, plants, and even dead animals. They prefer to stay away from people.
- Many spiders are nocturnal. That is, they are most active at night.
- It is best to watch spiders in the distance. Interestingly, in many houses, at least, dozens of spiders live.
- You can not kill spiders because they eat harmful insects! The average spider eats about 2,000 insects in one year.
- Spiders existed at least 150 million years before the dinosaurs, according to fossils. Fossils, which are 380 million years old, indicate the existence of spiders.
Each spider makes silk threads
Each spider makes silk, but not all spiders make a web. Those making the web use tiny claws to walk without sticking.
Silk spiders are used for:
- create nests;
- making hinges for sash-closing flaps;
- manufacturing of egg bags;
- mummification of prey.
If the spiders move away from the nest, they will leave a silk thread, and if they feel danger, they use the thread to return.
Tiny spinnerets in the back of their body produce liquid silk. When it comes in contact with air, it hardens. Interestingly, some silks are sticky, while others are not.
Small spiders also weave silk, and some use it to create a "balloon." They climb high enough to catch the wind, and silk weaving carries them to another place.
Some spiders are quite sociable and even “cooperate”, create cities from the web. They will connect the individual networks they make into one large network, sometimes large enough to cover the tree!