Adult brown recluse spiders typically measure between 6 and 20 millimeters, but some have been found that exceed that size. Their coloring usually ranges between different shades of brown, but may also appear white or even black/gray. The well-known violin pattern on their backs (dorsal side) is a good indicator that the spider is a brown recluse. However, other spiders have similar markings. Still, it’s better to be safe!
Brown recluses like to hide in dry, dark areas that will be undisturbed. This means if they’re in your home, they’re usually in attics, basements, or closets. They are often found in and around cardboard and that may be because it feels like decaying tree bark to them.
A brown recluse spider’s venom is power and used to kill other insects. They rarely bite humans and usually only happens when the spider feels threatened or is accidentally touched. However, these bites can be incredibly serious, as their hemotoxic venom can cause necrosis (death of tissue) and at times, hemolysis (red blood cells bursting). This leaves deep, problematic scars that require treatment that can take months.