Spiders in Iowa

Spiders In Iowa (Infographic)

October 1, 2014

There are over 40 spiders found in Iowa. Most of them are harmless, with the exception of a couple. However, many people are often frightened by spiders, unable to determine if the spider is poisonous or not. Find out the differences between spiders found in Iowa.

Spiders in Iowa Infographic

5 Most Common Spiders in Iowa

Black and Yellow Garden Spider

As the name suggests, these spiders are identified by their black and yellow coloring. Females are 4 times larger than males and also display more dominant colors. Black and yellow garden spiders are found outside, typically in fields and gardens. They are most active during the daytime because they like sunny conditions with little to no wind. 

Common House Spider

Common house spiders are common in houses, sheds, and garages. They typically weave their webs where two edges are adjoined. For example, webs can be found in ceiling and window corners. These spiders can be found anytime of the year, but they are not poisonous. They are typically brown in color to camouflage them.

Fisher Spider

Fisher spiders are one of the most common spiders found in Iowa. They do not need to make webs to catch their prey. Fisher spiders have better eye sight than most spiders, which allows them to pounce on their prey after they have found it. Although the spider is not poisonous, it can bite.

Grass Spiders

Grass spiders are found in grass and foliage. They get their name from their webs found in the grass. These webs are especially visible in the early morning when they are covered in dew. As the spider grows in size, so does its web. Common colors found on grass spiders are black, brown, tan, and gray.

Wolf Spider

Wolf spiders are found outside in habitats of tall grass and shrubs. The habitat provides an abundant supply of insects. Similar to the fisher spider, wolf spiders do not use webs to catch their prey. The wolf spider is can bite humans. Although it is a poisonous spider, it is not lethal.

2 Most Dangerous Spiders in Iowa

Black Widow

The black widow is one of the few poisonous spiders found in Iowa. Fortunately, they are rare. They are found in close distance to man-made structures. Black widows will mostly be found on outdoor objects that have not been used for a long period of time, such as playground equipment or gardening materials.

Brown Recluse

Brown recluse spiders have a brown and gray abdomen. These spiders are typically found outside in piles of loose debris. If the spiders make their way inside, they are found in clothing or towels left on floors. These spiders are not aggressive in nature, however they are poisonous.

Other Spiders Found In Iowa

Arrow-Shaped Micrathena Spider

American House Spider

Banded Garden Spider

Bold Jumping Spider

Comb-Clawed Spider

Cross Spider

Ground Spider

Labyrinthine Orb Weaver Spider

Lattice Orbweaver Spider

Long-Bodied Cellar Spider

Lang-Jawed Orb Weaver

Long-Legged Sac Spider

Marbled Orb Weaver

Metallic Crab Spider

North American Jumping Spider

Nursery Web Spider

Orb Weaver

Parson Spider

Putnam Jumping Spider

Red Spotted Ant Mimic Spider

Running Crab Spider

Running Spider

Sac Spider

Shamrock Spider

Sowbug Killer Spider

Spined Micrathena Spider

Spiny Backed Orb Weaver

Spotted Orb Weaver

Tan Jumping Spider

Thin-Legged Wolf Spider

Trashline Orb Weaver

Triangulate Cob Web Spider

Tuft-Legged Orb Weaver

Venusta Orchard Spider

Woodland Jumping Spider

Yellow Sac Spider

Des Moines Spider Removal

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