SPIDERS (Aranei) are one more of groups of a class arachnoid. Spiders on some signs are very close to insects, however they strongly differ from them, and these groups are connected only by some lines of the remote relationship. One of the most known (even to the child) features practically of all species of spiders are an ability to spin a web and to create from it very difficult arranged lovchy networks (on another they are called still by a snare) from substance very reminding silk which is allocated from web glands. Today only several species of spiders which sting is very painful are known (and if not to accept any actions, then litalen). One of examples - “the black widow“. The majority of spiders, though make a sting, however they are not dangerous to the person at all.
the Name of a class of spiders - Arachnoidea originated from Ancient Greek arachne - a spider. In one their Greek myths called Arakhna the girl who was very skillful weaver, and once having caused on competition about the goddess Athena, weaved more the best, fabric. The angered goddess turned to Arakh into a spider, having declared that from now on she and all her sort will be spun and weaved until the end of life.
is known Today 30 000 (a plus-minus of 200 types) species of spiders. Average length of a trunk at spiders makes 0,1 - 5 cm. Their main food is liquid fabrics which they exhaust from insects. Spiders meet at all manned latitudes and elevation marks. Spiders were even found on Mount Everest slopes. It somewhere in 6700 meters above sea level. Lived because. Some types adapted and live in water. Being settled, to grind a number of small types climbs on the ends of blades and other similar towering objects and, having raised a paunch, begins to create a web thread which is picked up by streams of air and, having reached necessary length, it carries away on itself an animal. That happens years during obvious seasons and is especially visible “Indian summer“ how soon in air, perhaps, to create whole “flying carpets“ from 10 - ov the bound spider lines. This specific reception of moving permits to spiders to overcome huge distances and to reach including the islands mislaid in the ocean.