Brown Recluse Spiders in Tennessee

The brown recluse is a real resident of Clarksville and the rest of Middle Tennessee. It is also one of the most over-blamed animals in the state. University of Kentucky Extension says it is widely over-reported, and UT Extension notes that most people who live near brown recluses never see one or get bitten. This guide covers how to know what you found, what a bite does, and what a pest control visit can and cannot do.

How to identify a brown recluse

University of Kentucky Entomology (ENTFACT-631, revised March 2026) gives the features to check:

• About the size of a U.S. quarter with the legs stretched out.
• Tan to dark brown, and the abdomen and legs are one even color. No stripes or mottling.
• Long, thin legs without obvious spines.
• A dark violin-shaped mark on the back, with the neck of the violin pointing toward the abdomen. It is clear on adults and fainter on young spiders.
• Six eyes arranged in a semicircle of three pairs. Most spiders have eight.

The eyes are the reliable test. The Tennessee Poison Center points out that other spiders also have a violin-like mark, so the eye pattern matters more. You will need a good hand lens or a sharp phone photo to see it.

Common lookalikes

Most "brown recluses" people bring to entomologists turn out to be something else. UK's urban spider chart lists the usual suspects:

Spider	How it differs from a brown recluse
Wolf spider	Spotted or striped body, often banded legs; runs fast on the ground and builds no web
Cellar spider	Much longer, thinner legs; hangs in messy cobwebs in basements
Yellow sac spider	Yellowish abdomen, no violin mark, eight eyes
Fishing spider	Much larger, with darker brown patterning
Grass spider	Brown with gray or tan stripes; builds funnel webs in lawns
Woodlouse hunter	Dark reddish head, gray abdomen, orange legs
American house spider	Rounded abdomen with dark patterns; almost always sitting in its cobweb

If the legs are banded, it is not a recluse. UK says so directly. You can also take a specimen to the Montgomery County Extension office, which the Tennessee Poison Center recommends for confirming an ID. Or send us a clear photo and we will pass it along with your request.

Where they live in Middle Tennessee homes

Brown recluses want dark, dry places that nobody disturbs. The Tennessee Poison Center lists closets and cupboards as favorite spots. Garages and basements count too, and so do attics. The Poison Center says most bites happen from March to October. UK adds that indoors they survive unheated basements and hot attics, and can go many months without food or water.

In a typical Clarksville house, the places to check are:

• Cardboard boxes in closets and under beds, especially boxes that sat untouched since the last move
• Shoes and clothes left on the floor
• Behind furniture and along baseboards
• Crawl spaces, especially along the joists and under rolled insulation
• Wall voids, concrete block voids and behind switch plates
• Stored holiday decorations and seasonal clothes in the attic

They hunt at night and do not use webs to catch prey. UK says adult females rarely leave their retreat. Males and older juveniles roam. That roaming is how they end up in a shoe or a pile of laundry. Seeing one in the daytime can mean hunger or crowding, or that someone recently sprayed.

One recluse is not proof of an infestation. Treat it as a reason to set traps and look. UK says a home infestation can range from a few spiders to several hundred. They mature in about a year and live 2 to 4 years. Each egg sac holds roughly 40 to 50 eggs.

Military families moving out of Tennessee should know that UK says a few recluses occasionally ride along in boxes or furniture, though infestations seldom take hold outside their native range. Unpack in good light and break down boxes promptly. Our PCS pest guide covers the rest of the move.

How common bites really are

Bites are uncommon. UK says the spiders are not aggressive and that a person can live in a heavily infested building and never be bitten. Their fangs are too small to bite through clothing. UT Extension's fact sheet says most bites happen when someone pulls on clothing where a spider is hiding or rolls onto one in bed.

The clearest example comes from Rick Vetter, a spider researcher at UC Riverside. He describes a Kansas family who collected 2,055 brown recluses in their home over six months, and nobody in the house showed evidence of a bite in eight years.

The flip side is that many wounds blamed on brown recluses are something else. UK says a recluse bite is hard to diagnose from the wound alone, even for physicians. Vetter lists dozens of conditions that get mistaken for recluse bites. The list includes MRSA and other staph infections. It also includes Lyme disease and shingles, along with diabetic ulcers. If several people in the house have sores at once, a spider is an unlikely cause. A doctor who knows that can treat what you actually have.

What a bite does

Per UK Entomology:

• The bite itself is usually painless.
• Redness and swelling often show up 3 to 8 hours later, with tenderness.
• Most bites stay local and heal within about 3 weeks without complications.
• Some develop a dry, sunken, bluish patch with a pale center, often with a blister. This kind of wound can spread over days or weeks and leave a deep scar.
• Rarely, a bite causes whole-body symptoms such as fever and chills, or vomiting. Severe reactions are more likely in children and older adults. People in poor health are also at higher risk.

MedlinePlus, from the National Library of Medicine, notes that children may react more seriously than adults.

What to do after a suspected bite

1. If you can do it safely, catch the spider or photograph it. UK says even a crushed spider can often be identified, and that helps the doctor.
2. Wash the bite with soap and water.
3. Put a cold damp cloth or wrapped ice on it, and raise the arm or leg if you can. The CDC's first aid advice for spider bites also says not to try to remove venom.
4. Call Poison Help at 1-800-222-1222. It reaches the Tennessee Poison Center free, 24 hours a day. You can also call your doctor, which the Poison Center recommends for any suspected spider bite.

Get medical care the same day if the wound keeps growing or turns dark, if a blister forms in the center, or if you develop fever or chills, or a rash. Do the same for any suspected bite on a small child. Call 911 for trouble breathing or a seizure. I would not wait on a sore that is spreading just because "it is probably a spider." That is exactly the kind of wound that turns out to be an infection that needs antibiotics.

How many is too many?

This is the question people in Middle Tennessee ask once the sticky traps start filling up. There is no official number. Here is how I would read it. One now and then in the garage or basement of an older house is normal here. Several a week, recluses in bedrooms or bedding, or small young ones on the traps (which means they are breeding inside) is a house that needs a plan. That plan is months of trapping, clutter reduction and sealing, not one spray.

Be wary of anyone who promises to eliminate them. People who treat for recluses for a living talk about reduction. And one thing I would not do myself: puff insecticide dust into outlets and switch boxes. Leave anything inside an electrical box to the company.

What actually reduces brown recluses

What you can do yourself

• Put out sticky traps. UK recommends flat glue cards without raised edges, lots of them, along baseboards and behind furniture. They show where the spiders are and whether the count is dropping.
• Cut clutter, and move stored items into plastic bins with tight lids. Every box removed is one less hiding place.
• Move beds away from walls and take off bed skirts. Keep shoes and clothes off the floor, and shake them out before you put them on.
• Seal gaps under doors and around utility lines, along with the bottom edge of siding. Keep firewood and debris away from the foundation.
• Wear gloves and long sleeves when you sort the garage or attic.

UK says total-release foggers, or bug bombs, are seldom effective. I would not spend money on them for recluses.

What a pro can and cannot do

UK says brown recluses are difficult to eradicate, mostly because of their secretive habits, and that treatment should be left to professionals. A thorough visit should include:

• A flashlight inspection of the crawl space and attic, plus closets and the joints where walls meet floors
• A grid of sticky traps, placed before any spraying, so you can measure results
• Insecticide dust placed in cracks and voids where the spiders live, not just a spray along the baseboards
• Sealing advice or exclusion work on the outside
• A follow-up visit to read the traps

Be skeptical of anyone who promises to "eliminate" brown recluses. In an older house with block walls, a crawl space and a full attic, there are more hiding places than anyone can treat, and UK notes that adult females are less likely to wander into traps. A realistic goal is fewer spiders and no bites, tracked by trap counts over a few months. Ask how the company will measure progress and what a follow-up costs before you sign anything long term. Our pages on one-time vs. quarterly service and judging a quote can help.

If you rent, recluses in the walls or crawl space are usually a building problem, not a housekeeping one. See Tennessee renters and pests before you pay for treatment yourself.

We only refer companies chartered by the Tennessee Department of Agriculture (and licensed by the Kentucky Department of Agriculture for Kentucky addresses). For the full spider service, see spider control in Clarksville. If your traps keep catching recluses, ask for a free inspection and a written price before any treatment.