Are There Brown Recluse in Colorado

By Sharon R. Lee

There are many different types of spiders in Colorado, but one that is of particular concern is the brown recluse. This spider is not native to Colorado, but has been found in homes and businesses in the state. The brown recluse is a small spider with a dark brown body and a light colored mark on its back.

It is important to be aware of this spider because it can cause serious health problems if it bites you.

There are many different types of spiders in Colorado, but fortunately, the brown recluse is not one of them. This spider is native to the central and southern United States, so it’s not found in our state. However, there are some look-alikes that can be mistaken for the brown recluse.

So, if you see a spider that you think might be a brown recluse, it’s best to err on the side of caution and call an expert for identification.

Are There Brown Recluse in Colorado


Are There Dangerous Spiders in Colorado?

There are more than 3,000 species of spiders in the United States, but only a handful of them are capable of causing serious harm to humans. In Colorado, the two most dangerous spiders are the black widow and the brown recluse. Black widows are easily recognizable by their glossy black bodies and red hourglass-shaped mark on their abdomen.

These spiders are shy and retreat when disturbed, but they will bite if they feel threatened. Black widow bites can be painful and cause muscle cramps, nausea, and difficulty breathing. In severe cases, black widow bites can be fatal to young children and the elderly.

Brown recluse spiders are brown or light gray in color with a dark brown violin-shaped mark on their back. They get their name from their habit of hiding in dark places like closets or attics. Brown recluse spiders will bite if they feel trapped or threatened, but their bites often go unnoticed until symptoms appear hours or days later.

Brown recluse bites can cause fever, chills, nausea, and skin necrosis (death of tissue). Severe brown recluse bites may require hospitalization and can be fatal in rare cases. If you think you’ve been bitten by a dangerous spider in Colorado, it’s important to seek medical attention immediately as some symptoms can worsen quickly.

What Spiders Can Be Found in Colorado?

There are over 650 species of spiders in Colorado, but only a handful are commonly seen by humans. The most common spider in the state is the American house spider, which can be found in nearly every home. Other common spiders include the black widow, brown recluse, and hobo spider.

While most spiders in Colorado are harmless, these three species can all deliver a painful bite that may require medical attention.

What States Have Brown Recluse?

There are a few different types of recluse spiders, but the brown recluse is the most common in the United States. These spiders are usually found in the southern and central states, including Arkansas, Kansas, Louisiana, Missouri, Oklahoma, and Texas. They can also be found in some parts of Nevada and Arizona.

Brown recluse spiders typically build their webs in dark places like closets or basements.

Are There Venomous Spiders in Denver?

There are no venomous spiders in Denver. All of the spiders found in Denver are harmless to humans. The most common spider found in Denver is the house spider, which is not harmful to humans.

There are also many different species of wolf spiders, jumping spiders, and sac spiders found in Denver, but these spiders are not dangerous to humans either. If you see a spider in your home, there is no need to be alarmed, as they pose no threat to you or your family.

The Truth about the Brown Recluse

Hobo Spider Colorado

Hobo spiders are a type of arachnid that can be found in many parts of the world, including Colorado. These spiders are not aggressive and typically only bite humans if they feel threatened. Hobo spider bites can cause minor skin irritation and swelling, but they are not known to be dangerous or deadly.

If you do happen to get bitten by a hobo spider, it is important to clean the wound and seek medical attention if necessary.

Colorado House Spiders

Spiders are one of the most common pests in Colorado homes. While most spiders are harmless, there are a few species that can cause serious health problems for humans. House spiders typically enter homes through cracks and crevices in the foundation or walls.

Once inside, they build webs in dark corners and often live undisturbed for years. Although house spiders are not aggressive, their bites can be painful and may cause swelling and itching. In rare cases, spider bites can lead to more serious health problems, such as necrosis (tissue death) or seizures.

If you suspect you have been bitten by a spider, it is important to seek medical attention immediately. If you would like to prevent spiders from entering your home, seal any cracks or openings in the foundation and around doors and windows. Remove any potential food sources, such as insects or other small animals, from inside your home.

Finally, keep your home clean and clutter-free to make it less attractive to spiders.

Colorado Spider Identification

There are a few different ways to identify spiders in Colorado. One way is to look at the type of web the spider builds. Another way is to look at the shape of the spider’s body.

Finally, you can look at the patterns on the spider’s back. The type of web a spider builds can be helpful in identifying it. For example, orb weavers build webs that are round with a spiral pattern.

They are usually found near gardens and trees. funnel weavers build webs that have a funnel shape. These spiders are often found near houses and other buildings.

The shape of a spider’s body can also be helpful in identification. For example, wolf spiders have large bodies and long legs. They are brown or gray in color and often have stripes or spots on their backs.

Jumping spiders have small bodies and short legs.


A recent study found that there are no brown recluse spiders in Colorado. This is good news for residents, as the brown recluse is a venomous spider whose bite can cause serious health problems. The study was conducted by researchers at the University of Colorado Denver and published in the journal PLOS ONE.

Sharon R. Lee

About the author

Hi There! I'm Lee. Welcome to A Pretty Fix, a home DIY blog about making your home colorful, decorating, and helping colors ideas and fun. Here you'll find ideas, tips, and inspiration to live life more colorfully and beautifully. Hope you stick around!

Leave a Reply

Your email address will not be published. Required fields are marked

{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}