The greatest risk of a spider bite is anaphylaxis: the allergic reaction to spider venom that is sometimes encountered with very sensitive people. 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. Trapdoor spiders are not that easy to identify since there are other similar species for which they are often mistaken: the funnel-web spiders and the mouse spiders are the most relevant examples here. Without detailed analysis, a correct identification cannot be performed, and it is usually for the professionals to succeed in such daring attempts. You can only be exposed to a hobo spider bite in case you accidentally crush one; the bite is pretty painful due to the toxicity of the hobo spider venom. The hobo spider is easy to recognize by the mixture of brown and rust shades; the species also carries another distinguishing mark: a herringbone pattern present on the superior side of the abdomen. A Bite from a Brown Recluse Spider Like other insect injuries, brown recluse spider bites are likely to cause lots of discomfort as they are behind the majority of necrotic wounds reported in the United States on a yearly basis. Though the spider species in question is pretty common and not aggressive, sometimes, their venom has a great impact on the system triggering a very violent response not only at the skin level but in the deep body structures as well. The black widow spider is not capable of killing a bird that would eat it, but the digestive sickness that would follow, will be definitely enough to make it avoid attacking the black widow again. The female black widow spider is more venomous than the male, and it is she the biggest threat to predators. This is the case with the house spider, the giant house spider and the hobo spider; they all live indoors, but only the latter is a real threat to humans, since its bite can cause necrosis. In order to avoid direct contact with spiders indoors, you can use special sticky traps that will drastically lower the risk of being bitten by a venomous species.