Spiders in Illinois

Spiders found in Illinois include 22 unique species from 94 confirmed sightings based on contributions made by Spider ID members. It is important to remember that spiders seen in Illinois are not bound by the territorial lines decided on by humans, therefore their distribution is subject to change. Occasionally, spiders can be found well outside of their known range due to being intentionally or accidentally transported by humans in cars, luggage, and other belongings.


22 Species Found in Illinois

Illinois Sightings
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94 spider sightings have been made in Illinois by contributing members. Consider submitting confirmed sightings of your own.

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Picture of Loxosceles reclusa (Brown Recluse) - Male - Dorsal Enlarge Picture
Picture of Dolomedes spp. (Fishing Spiders) - Dorsal Enlarge Picture
Picture of Tigrosa helluo - Dorsal Enlarge Picture
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Picture of Salticus scenicus (Zebra Jumper) - Dorsal Enlarge Picture
Picture of Gnaphosidae (Stealthy Ground Spiders) - Dorsal Enlarge Picture
Picture of Pisaurina mira (Nursery Web Spider) - Dorsal Enlarge Picture
Picture of Schizocosa spp. (Lanceolate Wolf Spiders) - Male - Dorsal Enlarge Picture
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Picture of Latrodectus variolus (Northern Black Widow) - Male - Dorsal Enlarge Picture
Picture of Misumessus oblongus (Green Crab Spider) - Dorsal Enlarge Picture
Picture of Philodromidae (Running Crab Spiders) - Dorsal Enlarge Picture
Picture of Araneus marmoreus (Marbled Orb-weaver) - Female - Dorsal Enlarge Picture
Picture of Dysdera crocata (Woodlouse Hunter) - Lateral Enlarge Picture
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Picture of Scytodes thoracica - Lateral Enlarge Picture
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Picture of Steatoda triangulosa (Triangulate Cobweb Spider) - Dorsal Enlarge Picture
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Picture of Steatoda borealis - Male - Dorsal Enlarge Picture
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Picture of Tigrosa helluo - Lateral Enlarge Picture
Picture of Cheiracanthium spp. (Long-legged Sac Spiders) - Dorsal Enlarge Picture