Webs are the distinct mark of spiders but even these have a particular imprint of their own: thus, some create sheet webs, others spiral webs, not to mention the true mazes that some dangerous species design as deadly traps for their prey. A clear example here is the distinct tangled web the black widow makes; yet, spiders also create webs for the protection of their nests. Unlike other related species, the hobo spider isn't hairy; though the legs of these creatures are very strong and large, they are also very smooth. The life extent of the hobo spider is pretty reduced, but though this species lives for a short period of time, their existence is pretty intense. Every year around August and September the hobo spider males are incredibly active, and it is during this time of the year that most bites are reported. Even in North America there are three different types of the black widow spider and their classification is made according to the geographical area where they live: there is the northern black widow, the southern black widow and the western black widow; thus the species is widely spread from the south of Canada to Mexico. A special feature of the wolf spider is the position of the eyes on the body; the four pairs are arranged in very unique ways, with four small eyes in a bottom row, two large ones placed in the middle and two middle-sized ones on the top row. The specificity of their vision organs is the one that ensures the survival of the species since the wolf spider depends on the eyesight to hunt. The curious fact is that lots of brown recluse spider bites have been reported in parts of America where this species does not live. There are other spider varieties to blame for the matter, but none of them causes necrosis, not even the Hobo spider, that is often held responsible. The brown recluse spider bites are the only ones to cause necrosis but in very rare situations and when the immunity of the victim is very low. The bite of the brown widow spider is pretty painful, causing a lot of trouble to the victim, yet, it is not even by far as serious or as toxic as that of the black widow. There is a paradox related to the qualities of the brown widow spider venom: when compared to that of the black widow it is twice as potent.