House spiders can be venomous or non-venomous depending on the variety of spider. Although most spiders are no more than a nuisance, knowing about the different types of house spiders will help you determine if the spiders in your home are dangerous to you and your family.
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Brown Recluse Spider
The brown recluse spider is one of a number of venomous spiders found in the United States. A bite from a brown recluse causes a lot of pain. The venom the spider releases into the blood stream can result in pain at the bite site as well as damage to the skin and surrounding tissue. Sometimes this causes skin cells to die. In general, the brown recluse does not actively choose to bite humans unless they come into close contact with human skin, according to Kansas Spider Control. Brown recluses have violin-shaped mark on their backs.
Black Widow Spider
The black widow is probably the most easily identifiable spider around. The female is solid black with a red hour glass shaped mark on her back. The bite of the black widow is venomous and can cause great pain or go unnoticed, depending on the person. The bite of the black widow is deadly to humans because the venom it releases attacks the nervous system, according to A Consumer Guide to Pest and Termite Control. The black widow prefers to set up residence in out of the way, quiet places, such as garages, furniture and basements.
Jumping spiders are not web builders like most spiders. Instead, they actively hunt their prey, jumping on it to catch it. According to The Tree of Life Web Project, jumping spiders are easily identifiable because of the four large eyes on their faces as well as the four smaller eyes found on top of their heads. They are usually a dark colour, such as brown, black or grey, but some have bright colourings on them such as red or orange. Their bodies also appear to be covered in fuzz.
These spiders are often called the common house spider because they are one of the most common indoor spiders. They build their webs from one surface to another, such as wall to ceiling. When there are multiple spiders in one area, their cobwebs inter-tangle creating large web coverings, according to the University of Florida Institute of Food and Agricultural Sciences. These spiders are not dangerous. They are generally grey, brown or yellowish in colour.
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