Spiders are long-legged arthropods and can be easily distinguished by their very long legs as compared to their body size. They belong to the family, Arachnids. Spiders are widely feared by humans, but it is a fact that less than 30 of them are actually dangerous to humans. Spiders are amazing predators known for weaving remarkable webs. Do you know that a spider web thread is stronger than steel? Check out some amazing spider facts.
Facts About Spider Size
Long spiders usually have a length of 2 to 10 mm, but their legs can grow to a length of 50mm. Male spiders are slightly smaller than female spiders. Patu digua is the smallest spider in the world. Its size is only 0.37 mm. Goliath is the largest spider species in the world. It can reach upto 1 foot in length.
Facts About Spider Appearance
- The body is usually light gray or brown. Some underground spiders have brown lines, or chevron marks on the sides of their stomachs.
- Spider cells have eight legs with dark knee segments, and all legs are connected to the cephalothorax region. The spider’s long and thin legs contain sensors, which can detect movement and vibration.
- Spider’s body can be divided into two parts, the cephalothorax and the stomach. Stomach is usually round, or cylindrical. Cephalothorax is the combined name given to the head and the thorax.
- Almost all spiders make silk from an organ called a spinner at the end of the stomach. They must be able to touch something to wrap it in a webbing.
Hunting Methods of Spiders
- Every time a prey enters the net, the spider quickly throws long thread over the prey from a distance, to limit its movement. This trick allows the spiders to kill a prey which is many times larger than its size.
- Daddy long leg spiders can attack and kill spider spiders, which are known to be quite dangerous.
- Huntsman spiders, jumping spiders, and Tegenaria species spiders can also fall prey to the daddy long legs spider.
- In fact, daddy long legs is known to be one of the most venomous spiders in the world. However, its fangs are very weak and can’t harm humans.
- Daddy long leg spider is known as a vibrating spider. They vibrate rapidly in a rotating motion, while hanging in their nets and become blurred, whenever they feel threatened. Sometimes, they use this trick, when they attack other spider webs. Vibrating action helps them imitate the struggles of trapped prey and thus, lures the host to them, so that they can attack and consume it.
- Celaenia excavata is a spider that disguises itself as a lump of bird droppings, and this is clearly the most convincing disguise. Not only is the spider’s body colored exactly like bird droppings (complete with seed-like places), but it also seems to sit on a “splatter” which is very convincingly made from its own silk.
- When a spider is a baby, it has camouflage abilities. Because its body has almost no color so it cannot be known by predators.
Basic Spider Facts
- Each spider spits a pheromone that can attract male moths who are looking for a mate in the mating season, so that male moths are approaching and entangled in the bait.
- Female spiders will eat sex partners (male) either before or after mating.
- According to scientists, spider webs are stronger than steel.
- Spiders are not insects but belong to the arachnid class along with scorpions, mites and ticks which are also part of the arachnida class.
- Spiders are found all around the world except the cold continent Antarctica. There are 45,700 species of spiders.
- Not all the spider venom is dangerous to humans. In fact, some of the spider venom can be used as medicines as well as in making pesticides.
- Although spiders are mostly predators, some juvenile spiders and some spider species like the jumping spider (Bagheera) also feed on plant nectar.
- Spiders are no threat to humans. They only bite humans in self defense.
Interesting Facts About Different Spider Species
- Cellar spiders do not clean their nets, on the contrary, they builds a new web when the old one gets dirty.
- Eduador’s Theridion is a spider that lives large groups of their species. They hang upside down from trees with hundreds of strands of silk hanging from the trees to the ground.
- A special spider web called “gossamer” is made to help the spider fly easily with the aid of wind. “Ballooning” or “Kiting” are other names for this technique.
- The spider species “Ogre Faced” or “Net casting” is a spider that produces Deinopidae, by hanging upside down it makes a small net between the two front legs for them to use to reach or scoop up other insects.
- Argyroneta aquatica is one of the true spiders that can be found in water, he gets the name “Dive Spider.”
- Phidippus is considered as the most beautiful spider in the world.
- Funnel Web Spiders are considered as the most dangerous spiders in the world. They are found in Australia. Their bite can be lethal and can also lead to death. Some other dangerous spider species are Redback Spider, Red Widow Spider, Brown Widow Spider, Black Widow Spider and Brazilian Wandering Spider.