Most people are afraid of spiders, or treat them with disdain, but in vain, because it is very interesting and unexplored until the end of earthly beings.Many call them insects, but it is not.Spiders are ancient arthropods.
All spiders body consists of the abdomen, the cephalothorax, four pairs of legs and the spinning unit.But as the eyes of a spider - a separate issue.The lifespan of these creatures is 30 years old and I must say that most of them did not die of natural causes.The smallest spider has a size of not more than 0.5 mm, and the largest is almost 30 cm. Today, there are about 42,000 species of spiders, which live now, more than one thousand kinds of minerals, in addition, constantly opening new ones.
Types of spiders - photo
All known species of these animals are predators.But Bagheera Kiplingi 90% eats plant foods.They live in the acacias and eat special structures located at the tips of the leaves, which a lot of proteins and lipids.It was only during a severe drought, they can eat each other.
return to the question of how much the eyes of a spider.Let's start with the fact that different families of these animals are very different eyes.To some of them of the need to catch prey, and some well do without it.
eyes spider who hunts without the usual network is very well developed.They had eight, and the field of view - almost 360˚.The two main eyes are located in front and look right, another couple looking ahead and to the sides.The next pair of laterally directed, and the latter is located in the back of the head at the sides.This variety includes representatives spiders horses and wolf spiders.If you are interested to see how much eye spider photo attached.
But cave spiders live in the dark.They are either very ill see or do not see at all.They all depend on the sensations and sounds.Orb-weaver spider have very small eyes, as almost do not need vision.They have perfectly developed the mechanism of feelings, which reacts to movement trapping network.
A variety of spiders represented the families, each of which is composed of many species.The first is the family - it ktenizidovye spiders, who live mainly in the tropics and subtropics.During the day they sit in their burrows, and come out at night to hunt.
Linifii - another family.It includes small spiders that weave around your property network and with their help hunt.
to water the family is only one species that lives almost everywhere.These spiders live in the coastal zone, where there is dense vegetation.
representatives itinerant families are pretty active life, love to change their habitat area.They have no shelter, so the traps are also not set, and just pounce on prey, as they have good eyesight.How much eye wandering spider family?This predator of four pairs.
Another family - wolf spiders.There are more than 2 thousand varieties.The name they got from the fact that they live in burrows and eat their own kind.
mygalomorphae - a family, which is also called diggers.These representatives live in burrows.And one of the species currently builds three-chamber hole.Log into each chamber is covered with a lid carefully from the web, and if someone gets into one of the chambers, the spider runs across to the other his "room."
about these representatives of our fauna can talk endlessly.There are too many, they are a different way of life and are the oldest inhabitants of our planet.The frozen amber found cobwebs, whose age is not less than 100 million years.
