Spiders in Texas: Which Ones Are Actually Dangerous?

Black widows are the easiest dangerous spider to identify. The female is a glossy black spider with a distinctive red or orange hourglass marking on the underside of her abdomen. She is about half an inch long in body size, not counting the legs. Males are smaller and lighter-colored but are rarely the ones involved in bites.

Black widows prefer dry, dark, undisturbed spaces. Outside: wood piles, under rocks, in the underside of outdoor furniture, inside barbecue grills that have not been used in a while, under deck boards, and in storage sheds. Inside: they favor corners of garages, under workbenches, inside empty boxes, in crawl spaces, and in infrequently opened closets.

Their webs are disorganized and sticky, not the neat circular webs most people picture. They tend to build low to the ground. The key habit to break is reaching barehanded into spaces you cannot see clearly, particularly when moving firewood or stored items in the garage.

Brown recluses are genuinely present in the Kingwood area. They are light to medium brown with a dark, violin-shaped marking on the back of the head, pointing toward the abdomen. They are small, about the size of a quarter including the legs. One distinguishing feature under close inspection is that they have six eyes arranged in three pairs, rather than the eight eyes most spiders have.

Brown recluses are, as the name implies, reclusive. They hide in undisturbed areas: inside cardboard boxes, in folded clothing left on the floor, inside shoes, behind pictures, in attic insulation, and in wall voids. They are more active at night. Most bites happen when a spider is accidentally compressed against skin, often from dressing without shaking out clothing or shoes, or from reaching into a box without looking.

Brown recluse venom can cause necrotic skin lesions in some people, though the severity varies considerably. Most bites cause only localized pain and redness. A small percentage develop the tissue damage that gives the species its alarming reputation.

If you are bitten and suspect a black widow or brown recluse, catch the spider in a container if you can do so safely. Identification helps the medical provider make faster decisions. Wash the bite site, apply ice, and go to an urgent care or emergency room. Do not wait to see how it develops before seeking care.

Black widow bites cause rapid-onset pain, muscle cramps, and sweating. They are a medical emergency, particularly for children and older adults. Brown recluse bites typically start with mild pain that may increase over the following hours and days. The necrotic lesion, if it develops, appears 24 to 72 hours after the bite.

Spiders follow insects. Reducing the general insect population around your home reduces the food supply that draws spiders in. Keeping outdoor lights on a motion sensor or switching to yellow bug lights cuts the moth and insect activity that brings spiders to doorways and eaves.

Inside, the practical steps are: store items in plastic bins with lids rather than cardboard boxes, shake out shoes and clothing left on the floor, and use a vacuum to knock down webs in corners and behind furniture. In the garage and shed, keep firewood at least 20 feet from the house and stack it off the ground.

Regular pest control reduces both the spider population and the insect population they are hunting. Spiders tend to be secondary colonizers that move in when there is prey. Treating the exterior of the home on a quarterly schedule keeps both in check.