Brown Recluse Spiders: How to Identify Them and What to Do
As a pest management company, we’re often asked about brown recluse spiders, one of the most feared spiders in the United States. They’re known for their venomous bite, which can cause serious tissue damage in rare cases. Because of the concern surrounding them, it’s important to understand what a brown recluse actually looks like—and how to properly identify one.
Are Brown Recluses Aggressive?
Despite their reputation, brown recluse spiders are not aggressive. The name “recluse” is fitting—they prefer to avoid people and typically bite only when trapped or pressed against the skin, such as inside shoes, clothing, or bedding. Bites are relatively uncommon, but when they occur, they should be taken seriously.
What Does a Brown Recluse Look Like?
Brown recluse spiders are small to medium-sized, with a body length typically ranging from ¼ to ¾ of an inch (not including legs).
Key identifying features include:
Violin-shaped marking
A dark violin-shaped mark on the cephalothorax (the body section where the legs attach). The “neck” of the violin points toward the abdomen. While this marking is a well-known identifier, it is not always clearly visible, so it should not be the only feature used for identification.Six eyes (not eight)
Unlike most spiders, which have eight eyes, brown recluses have six eyes arranged in pairs. This is one of the most reliable identifying traits.Uniformly colored legs
The legs are long, thin, and evenly colored, usually light brown or tan, with no stripes or banding.
Flat body shape
Their flattened bodies allow them to hide easily in tight spaces.Fine body hairs
The body and legs are covered in fine hairs, giving them a smooth, velvety appearance rather than a glossy one.
Where Are Brown Recluses Commonly Found?
Brown recluses prefer dark, quiet, undisturbed areas, especially indoors. Common hiding places include:
Cracks and crevices
Behind furniture
Under beds and couches
Inside closets
Storage areas, cardboard boxes, and cluttered spaces
They are nocturnal, meaning they are most active at night.
Look-Alike Spiders: A Common Source of Confusion
Not every brown spider with a marking is a brown recluse. Several other spiders—such as the desert recluse or Arizona recluse—can appear similar. These species are generally less dangerous, but misidentification is common.
Because of this, visual identification alone can be unreliable. If you’re unsure, it’s best not to guess.
How to Prevent Brown Recluse Infestations
The most effective prevention steps include:
Reduce clutter
Brown recluses thrive in cluttered environments that provide hiding places.Vacuum regularly
Especially in corners, closets, and storage areas.Seal entry points
Close gaps around doors, windows, foundations, plumbing, and electrical lines.Use caution with stored items
Shake out shoes, clothing, and bedding if they’ve been unused for long periods.
What to Do If You Suspect a Brown Recluse Problem
If you believe you’ve found a brown recluse—or suspect an infestation—it’s important to act quickly and safely. Avoid handling the spider directly, and do not rely on DIY treatments, which are often ineffective and may increase risk.
At Gressette Pest Management, our experienced technicians can properly identify the spider, assess your home, and create a targeted treatment plan to eliminate the problem and help prevent future infestations.
Don’t take chances with your health or safety.
Contact Gressette Pest Management today to schedule an inspection and get expert help with brown recluse spiders—or any other pest concerns.