Unusual Number of Giant 'Fishing Spiders' Spotted in Wisconsin

Aug 25, 2014 10:08 AM EDT | Jordan Ecarma

Wisconsin residents have reported increased sightings of the "fishing spider," which can grow up to 3 or 4 inches in size and is known for going under water to catch small fish.

The largest spider ever reported in the state will definitely terrify anyone who is already afraid of spiders.

"It's going to freak them out," said Linda Williams of the Wisconsin Department of Natural Resources, as quoted by the Green Bay Press-Gazette. "It is pretty impressive."

People are reporting more fishing spiders than normal this year. Usually seen around rivers, streams or lakes, the spiders are aggressive enough to dive below the water's surface to capture small fish and other aquatic creatures. They also frequent bridges, riverbanks and even backyards in their search for food.

"You could pretty much find them anywhere in Wisconsin," said Michael Draney, a science professor at the University of Wisconsin-Green Bay who specializes in spiders, as quoted by the Press-Gazette.

Williams said she has received 10 reports of fishing spiders this year and has seen another four spiders firsthand. The creatures are native to Wisconsin and inhabit areas throughout the Midwest. The "dark fishing spider," one of six variations, has been spotted more than usual this year, Draney said.

The species, which can live up to three years, is unusual since fishing spiders don't construct webs to catch their prey, instead skimming the surface of the water or diving to hunt. Fishing spiders don't exhibit aggression toward humans; however, they can leave a bite similar to a bite from a mosquito on a person who touches them.

While they often frequent areas near ponds, lakes, rivers and streams, the spiders can also be found at considerable distances from water, according to a University of Minnesota report. Some spiders have been measured to be as much as 4 inches across with their legs spread out. They consume insects as well as tadpoles, small fish and other vertebrate aquatic wildlife. 

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