Tan Jumping Spider

The Tan Jumping Spider (Platycryptus undatus), is one of several species of jumping spiders in Illinois. It extends from Canada in the north to Texas in the south, and from the center of the United States to the east coast. Tan jumping spiders have a female length of 10 to 13 millimeters and a male length of 8.5 to 9.5 millimeters. Their abdomens have a peculiar pattern with a succession of V-shaped marks going from front to back. While the remainder of their bodies is grey with black mottling, these markings appear light grey or beige.

Tan jumping spiders don't make webs to ensnare their prey. Instead, they engage in active hunting, stalking, and capturing their prey with their sharp eyesight and swift jumping skills. Although they are normally not aggressive, they might bite if threatened or cornered. That said, their bite is not considered medically significant.