![]() The victim suffers painful rigidity of the abdomen and usually a tightness of the chest. Black widow venom is a nerve toxin and its effects are rapid. People are usually bitten when lifting objects or reaching into areas where a spider is hidden. Like other spiders, the black widow is timid and will only bite in response to being threatened or injured. 6: The common house spider is related to the black widow but is harmless. When black widows are discovered in homes, they are usually spotted in vestibules and garages, or at times, sheds and outbuildings.įig. They typically dwell outdoors under rocks, boards, or yard debris (e.g., stacked flowerpots). In Kentucky, black widows are seldom found indoors. Other varieties of cobweb spiders, including the common house spider, are harmless. 5: The black widow can inflict a serious bite and should be treated with care.īlack widows belong to the ‘cobweb’ family of spiders that spin loosely organized webs. ![]() In some varieties and juvenile spiders, the distinct hourglass marking may be reduced to separate reddish spots on the lower or upper surface of the abdomen.įig. The adult female is about 1/2-inch long, shiny black and usually has a red hourglass pattern on the underside of the abdomen. 4: Insecticide sprays can often help deter spiders and other pests from entering homes.īlack Widow Spider- Of the spiders able to inflict a serious bite, the black widow is probably the most well-known. ![]() Products containing ingredients such as bifenthrin, cyfluthrin, deltamethrin or lambda cyhalothrin are effective, but may need to be applied periodically (e.g., monthly or bi-monthly) during warmer times of the year.įig. Pay particular attention to door thresholds, garage and crawl space entrances, foundation vents, and the bottommost edge of siding.
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