Brown Recluse Spider Identification Guide
Identify a brown recluse by its violin-shaped marking, six eyes, and plain, unmarked legs.
Read the full Brown Recluse Spider encyclopedia entry →
Key Visual Features
- Body length of about 1/4 to 3/8 inch, uniformly tan to dark brown with no bold color pattern across the abdomen
- A darker violin- or fiddle-shaped marking on top of the cephalothorax, with the "neck" of the violin pointing toward the abdomen
- Six eyes arranged in three widely spaced pairs (dyads) - unusual, since most spiders have eight eyes arranged differently
- Long, thin legs that are uniformly colored with no banding, stripes, or obvious spines
- An oval abdomen covered in fine, short hairs that give it a soft, suede-like appearance rather than a shiny one
- Overall body proportions are slender and unremarkable compared to bulkier spiders, which is part of why it can be easy to overlook
Where and When You'll See Them
- Prefers dark, dry, undisturbed places: closets, storage boxes, woodpiles, under loose bark, and crawl spaces
- Native to and most common in the central and southern midwestern United States
- Nocturnal, hiding by day and wandering at night while hunting rather than sitting in a prey-catching web
- May spin a small, irregular, off-white silk retreat rather than a traditional orb or tangle web
- Rarely encountered in the open during daylight hours, making a positive sighting somewhat uncommon compared to more visible spiders
Similar-Looking Bugs
- Many plain brown spiders get mistaken for a recluse, including cellar spiders, wolf spiders, and various sac spiders
- The most reliable distinguishing feature is the six-eye arrangement, visible with close inspection or magnification, since most look-alikes have eight eyes
- The violin marking alone is not fully reliable for identification, since other brown spiders can show similar dark patches on the cephalothorax
- Look-alikes often have banded, spined, or patterned legs, whereas a recluse's legs are plain and uniformly colored
Quick ID Checklist
- Uniform tan-to-brown color with no bold pattern
- Violin-shaped marking on the cephalothorax
- Six eyes arranged in three pairs
- Long, thin, unmarked legs
- Found in dry, dark, undisturbed spots indoors or outdoors
Frequently asked questions
Is the violin marking enough to identify a brown recluse?
Not on its own - it's best combined with checking the six-eye arrangement and considering where the spider was found, since other brown spiders can have similar-looking marks.
How many eyes does a brown recluse have?
Six, arranged in three widely spaced pairs, compared to the eight eyes found on most other spiders.
Where are brown recluse spiders typically found?
Dark, dry, undisturbed areas such as closets, storage boxes, woodpiles, and crawl spaces, mostly within their central and southern midwestern range.
Do brown recluse spiders spin webs?
They build a small, irregular silk retreat for shelter rather than a web designed to capture prey, since they hunt actively at night.
Brown Recluse Spider identified by the community
Recent Brown Recluse Spider finds identified with Bug Identifier.
