They need to accumulate some fat in order to be able to resist without food during the period when they have to guard the eggs. The easy way to distinguish between males and females is not just body size, but also the length of the articulated feet. One other peculiarity of the camel spiders consists in the presence of several pairs of eyes grouped on various body parts. Well adapted to various living conditions spiders use great camouflages, and they even imitate other species for survival. Most species have six or eight eyes disposed in various groupings on the body. Certain eyes are even more specialized than the others, not to mention the fact that there are also blind eye pairs that are located in various places on the articulate bodies of these creatures. Many patients are yearly treated for the wrong affection because of the misidentification and misdiagnoses of spider bites. Since necrosis can appear in the worst of cases, doctors can sometimes take it for other skin problems caused by staphylococci or fungi. Hence, the ability to correctly identify spider bites is vital for the right treatment of necrosis. Hives, wheezing, shortness of breath and weakness are the general symptoms associated with anaphylaxis, therefore call 911 right away if you notice any such symptoms. Other systemic reactions to spider bites include leg cramps, leg numbness, headaches, pulse changes, exhaustion and more, they are all serious enough to determine one to call the doctor right away. The severest form that a brown recluse spider bite can get is that of necrosis when the deep tissues are affected and get gangrenous; the venom actually destroys the soft tissue, the area heals very slowly and scarring is inevitable. A brown recluse spider bite gets painful and itchy within two up to eight hours from the incident. Wolf Spider A very common species, the wolf spider is the shy inhabitant of corners, basements and garages around our houses. Unlike most of its brothers, the wolf spider prefers to remain on the ground where it hunts at night; there is no web and no sign that would let you know where you'll find a specimen since the wolf spider desperately tries to stay out of the humans' way.