These are the spiders of imagination, Halloween and haunted houses. When and Where to Find: Linyphiids may be found from winter When they move their palps away from their face, you can see their brilliant metallic bluish-green chelicerae. much thinner than females. When not feeding, they may hide in a retreat at the web's margin. In the picture of the grass spider notice the three stripes on its cephalothorax (head-thorax); the two distinct spinneretts on the abdomen; small narrow abdomen, and tapering legs. males. The Araneus Gemmoides is an orb weaver species that occurs in the Western United States. Behavior: Daytime hunters, they actively pursue their color. If you cannot identify the spider, no problem. When an insect or another spider happens by, the funnel web spider rushes out to subdue its prey. Scientific Name: Agelenopsis sp. When and Where to Find: Very common in summer through early fall. Able to see prey several inches away, they hunt by day, pouncing on insects, spiders, etc., and hide at night in silken retreats in cracks and crevices. NOTE: When pesticides are used, it is the applicator’s legal responsibility to read and follow directions on the product label. Fishing spiders (like the six spotted fishing spider). There is also a border of white or cream color on the abdomen. Spider identification of venomous and dangerous spiders most commonly The Parson Spider does not spin a web to catch prey; it is part of the Ground Spider family. If you must have outdoor lighting, use yellow “bug lights” or sodium vapor lights instead of white lights and mercury vapor lights. I am particularly fond of their great graphic on the 25 different eye patterns you can find on spiders (I wonder if they make this in poster form?). The spider Check out their page on "Brown Spiders" for a quick browse of the diversity out there. The Trachelas Transquillus, or broad-faced sac spider is a spider that is native in the Eastern part of the United ... Ummidia is a genus of spiders that can be found around the world. A very similar species, the common house spider (Tegenaria domestica) occurs throughout the United States and is easily mistaken for the hobo spider. Smaller species such as the zebra spider (Salticus scenicus) are striped black and white and often found at windows. It’s been suggested that because some spider bites may have resulted in negative consequences for our prehistoric ancestors, that fearing spiders is adaptive, as it helps us avoid debilitating consequences. Brown 6-one middle pair and two side pairs, all the same size, Nocturnal hunting, solitary, jumps on prey, Builds a funnel web in grass, runs quickly and grabs prey from web, Nocturnal or diurnal,Sits near water, feels vibrations, hooks prey with claws on front feet, injects venom; pond skater on and below water, Sits with all legs extended, nocturnal or diurnal, doesn't prefer to jump on prey, bulids asymetrical webs in dark places, hunts at night leaving web, Rest with legs flattened out to side, often in X shaped posture, Young guarded in nursery web until hatching, Female builds nursery tent and guards until young hatch, Not able to penetrate human skin, harmless, Potentially deadly hemotoxic venom, may cause necrosis. time) to better match the flower color they are on, changing between Wolf spiders are active hunters that search for prey day or night. It is also known under ... Araneus marmoreus, The marbled orb weaver is a colorful orb weaver species. insects that rest on the leaves of the plant. When and Where to Find: Adults can be found late spring through summer, often in tall grasses or other vegetation. Similar dark stripes extend the length of the abdomen giving the Identification: Both sexes are reddish-brown to medium 5. summer through early fall. Size: About the size of a U.S. quarter, with legs outstretched. When and Where to Find: The species pictured (possibly Pardosa distincta) They wait "Wandering" spiders do not construct webs to The Pachygnatha is technically of the Orb Weaver family. When an insect lands on their web, they bite it from below their webs. However, perimeter application may not be necessary if vegetation, mulch, leaf litter, etc., are kept away from the foundation as mentioned above. If you have found a spider in Illinois that is not on our list, make sure to send us a picture via email to and we will include it. - painful bite, Black House Immatures can be found in spring, while adults may be found in early They also have a great guide for finding spiders by region and color. Just click on any of the images or links to learn more about the spider. I'm going to write mostly about the spiders common to Eastern and mid-western North America, because this is my home range, but there is some overlap with western species.