Home / Blog / Outdoor Pests

Spiders in San Antonio: Brown Recluse, Black Widow and Harmless Look-Alikes

How to identify brown recluse and black widow spiders in San Antonio, the harmless spiders often mistaken for them, and how to keep spiders out of your home.

By Time's Up Pest Control. Published 2026-10-22.

Key Takeaways

  • Brown recluse spiders have a violin-shaped mark and six eyes in pairs, and they hide in undisturbed clutter.
  • Black widows are shiny black with a red hourglass under the abdomen and live in dark, sheltered spots.
  • Most spiders in San Antonio homes, like wolf spiders and cellar spiders, are harmless to people.
  • Reducing clutter and controlling the insects spiders eat is the best long-term spider control.

Most spiders in and around San Antonio homes are harmless, and many help by eating other pests. Two species found in Texas, the brown recluse and the black widow, do deserve respect. Here's how to tell them apart from the look-alikes.

Brown Recluse

  • Look: light to medium brown, with a darker violin-shaped mark on the back, the neck of the violin pointing toward the rear. Legs are uniform in color, with no stripes or bands.
  • The best clue: six eyes arranged in three pairs. Most spiders have eight.
  • Where they hide: closets, storage boxes, garages, attics, under furniture and inside shoes and clothing that haven't been moved in a while.
  • Behavior: shy and not aggressive. Most bites happen when someone presses against one, like putting on a shoe or rolling over in bed.

Black Widow

  • Look: females are shiny black with a red or orange hourglass shape on the underside of the abdomen.
  • Webs: messy, irregular webs close to the ground.
  • Where they hide: wood piles, meter boxes, sheds, garages, under patio furniture and in dark corners of outdoor storage.
  • Behavior: not aggressive. Bites usually happen when someone reaches into a hiding spot.

Harmless Look-Alikes

  • Wolf spiders are large, fast, hairy brown spiders that hunt on the ground. They're scary-looking but not dangerous.
  • Cellar spiders ("daddy longlegs") have tiny bodies and very long thin legs and hang in corners.
  • Common house spiders build tangled webs in corners and are often mistaken for widows.
  • Other brown spiders are often called brown recluses. Check for the six eyes and plain, unbanded legs.

If You Think You've Been Bitten

Clean the bite, apply a cold compress and try to safely capture or photograph the spider. Get medical care if the bite gets worse, a sore develops, or you have symptoms like severe pain, muscle cramps, fever or trouble breathing. Seek care right away for young children and older adults. Poison Control is available at 1-800-222-1222.

How to Keep Spiders Out

  1. Cut down clutter in closets, garages and attics. Store items in sealed plastic bins instead of cardboard.
  2. Shake out shoes, gloves and clothing that have been sitting.
  3. Move bed frames away from walls, and keep bedding off the floor.
  4. Seal gaps around doors, windows and utility lines.
  5. Move firewood and debris away from the house.
  6. Control other insects. Fewer bugs means less food for spiders.
  7. Turn off or switch outdoor lights to yellow bulbs, which attract fewer of the insects spiders hunt.

How Time's Up Pest Control Can Help

Time's Up Pest Control treats spiders inside and out, removes webs from eaves and entries, and cuts down the insects that draw them in. Regular service through a prevention plan keeps spider activity low year-round. See our pest control services, or call for a free estimate.

Frequently Asked Questions

Are brown recluse spiders common in San Antonio?

Brown recluses are found in Texas and can live in San Antonio homes, though many brown spiders people find are harmless look-alikes.

How can I tell a brown recluse from other brown spiders?

Look for six eyes in three pairs, a violin-shaped mark and legs with no bands or stripes.

Do spider sprays work?

Sprays kill spiders they hit, but long-term control comes from reducing clutter, sealing gaps and controlling the insects spiders eat.

Contact Time's Up Pest Control

Time's Up Pest Control is a family-owned San Antonio pest control company serving homes and businesses. Licensed technicians (TPCL #877175), free estimates, satisfaction guarantee and 24/7 emergency service.

Phone: (210) 868-2267

Email: info@timesupbugs.com

Address: 1800 NE Interstate 410 Loop, Suite 216-B, San Antonio, TX 78209

Services: Pest Control, Termite Control, Pest Prevention, Commercial Pest Control