Poisonous Spiders Native to Illinois

Poisonous Spiders Native to IllinoisNot often thought of as a state with dangerous wildlife, Illinois' population of poisonous spiders might surprise many visitors and residents. While hardly a tropical jungle, Illinois has a few species that can be dangerous.  This article touches on a few of the posionous spiders found in Illinois. 

Black Widow

Black Widow

Perhaps the most famous of America's spider species, the black widow can be found throughout Illinois, more commonly in the southern part of the state. Black widows are very poisonous, with a bite that can kill if treatment is not pursued immediately. Fortunately, black widows are not aggressive, requiring a great deal of disturbance before they'll bite. Black widows are small and black, with a distinctive red hour-glass shape on their underside.

Brown Recluse

Brown Recluse

This spider, usually between a half and three-quarters of an inch in length, can be found throughout the center of the United States. Brown, with thin legs, the brown recluse rarely bites. But if the spider is disturbed, such as when people push bare feet against a spider web inside a shoe, it might. Bites can be fatal but are most often minor irritants, only occasionally resulting in the necrotic rot most associated with the spider.

Wolf Spider

Wolf Spider

This common spider is found across the Midwest. Relatively large in size, the wolf spider has a stocky, hairy body. Brown in color, with darker stripes, the wolf spider hunts at night, leading to common sightings in homes, gardens and garages. The wolf spider's bite is poisonous and often painful but is unlikely to be deadly. Regardless, first aid should be sought immediately if bitten by a wolf spider.

Black House Spider (Pictured top)

One of the more common sources of arachnid bites, black house spiders are found around window-frames, toilets, gutters and lights, which attract the spider's preferred prey. Black house spiders are about a half-inch in length, with thick bodies. Bites are never fatal, but some sufferers experience nausea or pain around the bite site.

Article Written By Louie Doverspike

Based in Seattle, Louie Doverspike has been a professional writer since 2004. His work has appeared in various publications, including "AntiqueWeek" magazine, the "Prague Post" and "Seattle Represent!" Doverspike holds a Bachelor of Arts in English from Hamilton College.

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