Brown recluse spiders have a signature dark violin-shaped marking on their backs, which typically begins behind their head. It may not be visible in younger brown recluses.
While many arachnids have banded legs or visible hair, brown recluse spiders have neither. They can range in color from brown or tan to various shades of yellow.
Wolf spiders, on the other hand, have markings that appear more like lines. They are usually less than 2 inches long, visibly hairy, and secure their food by hunting.
Brown recluse spider bites can cause fever, chills, itching, nausea, painful sores, and even a rare seizure. Wolf spider bites are unlikely to cause any concerning symptoms.