![]() Venom produced by the glands apparently is used to kill or paralyze prey and in defense. Virtually all spiders have poison glands that connect with the fangs. Some trap their prey in webs or snares others are active hunters that use excellent vision to stalk or ambush their food. Spiders are beneficial, feeding mostly on small insects and other arthropods. Homes in wooded areas or with naturalized or landscaped foundations may be prone to more frequent invasion because the surroundings are ideal spider habitats. Most spiders found in homes and buildings are "accidental invaders" that have entered around doors, windows, or other openings. These species may become established in homes. Those that prefer dark, shaded areas may also occur in cellars and basements. ![]() ![]() Some live in holes in the ground while others may be found under rocks or logs. There are about 2,500 different species in North America. Spiders are abundant (over 1,000,000 individuals per acre in a grassy field) and can be found almost anywhere from the bedroom closet to the 22,000 foot level on Mt. The immediate question - "Is this a black widow or brown recluse?" Webs are often associated with abandoned, neglected, or haunted houses, while the animals themselves bring to mind the image of a painful or deadly bite. Spiders tend to evoke two images - webs and bites. University of Kentucky College of Agriculture ENTFACT-622: Common Spiders Found Around Homes & Buildings | Download PDF | En EspaƱol by Lee Townsend and Ken Yeargan
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