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Pest Library

Here you can learn a little about some common and not so common pest you may see around your home or business.


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    There are about 3,000 species of spiders occurring in North America. Many species of spiders are household pests. Wherever food is available, spiders are likely to be found. All spiders are predators, feeding mainly on insects and other small arthropods. In the United Stated only two spider groups are considered dangerous to man, the widow spiders and the recluse spiders. Both of these groups are composed of several species.

Click the links below to learn more about the individual pests

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House Spider

    The common name reflects the fact that this is usually the spider most encountered indoors. It is a nuisance pest, probably more for the webs than the spider itself. This spider is found worldwide and is extremely common throughout the United States and Canada.
    Adult females have a body length of about 3/16-5/16 inches including an almost spherical abdomen. The male body length is about 1/8-3/16 inches including an elongated abdomen. The color is highly variable with the carapace(top of the head) yellowish brown, abdomen is dirty white with a few dark spots to almost black, with several dark stripes meeting at an angle medially above the tip of the abdomen. Female house spiders lay about 250 (range 132-442) eggs in a brown silken sac. These sacs are oval to flask shaped, and about 1/4-3/8 inches in diameter. There may be more than one sac in a web at one time. The female may produce up to 17 sacs, containing over 3760 eggs, in her lifetime.    The house spider randomly selects its web sites and creates a tangled web. If a web does not yield prey(food) it is abandoned, another site is selected, and a new web is formed. This process repeats itself until eventually, successful webs are constructed where air currents bring in prey.