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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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Black Widow

    These spiders get there common name from the popular belief that the female eats the male after mating, a phenomenon which rarely happens in nature. This spider is located throughout the world, with 5 species occurring in the United States.
    Adult females have an overall body length of about ½ inch including an almost spherical abdomen about 1/4-3/8 inches in diameter, with overall length including the legs of about 1 1/2-1 3/8 inches. Males are about half of the females size. The color is typically black, with the abdomen on ventral or underneath side with 2 reddish triangular markings usually joined together to form a reddish hourglass-shaped marking, but sometimes they separated or only a single mark.    Females deposit their eggs in silken egg sacs which are about 3/8-1/2 inches in diameter. The sacs are white, then soon turn to pale brown. Depending on the species, the maximum number of sacs per female ranges from 6 to 21 and the average number of eggs per sac is about 185-464.