Human Impact
The bite of these spiders is believed to be venomous to humans but rarely produces more than local symptoms. They are believed to produce a high percentage of the spider bites suffered by people, possibly because they wander about when people cannot see well or are asleep, and so they may get squeezed and bite to protect themselves. Bites that occur to farm laborers may occur because spiders hiding in their shelters on leaves may get squeezed.
It has been noted that a large number of bites attributed to the brown recluse spider may actually be the result of yellow sac spider bites, which possess a cytotoxic venom known to contain several proteolytic enzymes including alkaline phosphatase, deoxyribonuclease, esterase, hyaluronidase, lipase, and ribonuclease. These enzymes can cause localized tissue necrosis (which may be similar to that caused by a recluse bite), though the symptoms are less severe and do not result in the systemic effects occasionally seen with recluse envenomations.
However, the view that this spider is dangerous to humans has been questioned. A recent study of 20 confirmed yellow sac spider bites revealed no evidence of necrosis; further review of international literature on confirmed bites revealed only a single bite with mild necrotic symptoms.
Although the danger of C. inclusum may be questionable, the spider bite may cause local redness with stinging pain. When it's found immediately wash from the bite site to prevent further venom entering the wound in case of the spider bite. Thoroughly wash the wound with soap and water. Do not use alcohol. Also do not engage in any activity that raises the heart rate. An ice pack may be applied to draw out the venom. Do not squeeze or pick the bite site. It may cause secondary infection or spread the poison to a wider tissue region. If the pain persist for a long period, show it to a doctor for a proper measure.
C. inclusum bites usually occur when the spider is threatened. People might threat C. inclusum without noticing in some incidents. For example, while C. inclusum is hunting during the night time, people may roll over and press the spider accidentally or put on a coat that has been stored in a closet over the winter without noticing the spider inside. C. inclusum may also hide in shoes. As the weather cools down, it is more likely for the spider to invade the indoor structures. To prevent the bite from C. inclusum, secure all screens on the windows and doors. Do not stack fire wood near the house. Also, take care of all the house pests such as ants and silverfish that attract spiders.
In March 2011, Mazda initiated a recall of 65,000 Mazda6 automobiles after webs of this species were found to have clogged fuel system ventilation tubes. It is unclear why the spiders were drawn to build webs inside this particular vehicle, but the problem appeared to be widespread, though rare, across the United States.
Read more about this topic: Cheiracanthium Inclusum
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