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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Texas has about 900 spider species, so no short list can identify every spider you may encounter. The eleven groups below are a practical field guide to representative spiders found around Texas homes, gardens, grasslands and wooded areas—not a ranking of the state’s most abundant species. Most are useful predators and pose little risk to people or pets. Texas Department of State Health Services (DSHS) identifies black widows and brown recluses as the two Texas spiders of medical concern.
How to use this Texas spider guide
Start with habitat and behavior, then examine body shape, eye arrangement and markings. A web pattern or a brown color by itself cannot establish a species. Photographs of skin lesions are not a reliable way to diagnose a recluse bite; Texas A&M notes that bacterial infections can produce similar-looking lesions.
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The descriptions here use common groups and, where supplied by the sources, scientific names. Texas is geographically enormous, and the reviewed sources do not provide county-level frequency maps. A spider absent from this list may still be perfectly typical for your part of the state.
At-a-glance comparison
| Spider or group | Where you may notice it | Useful identification clues | Medical significance |
|---|---|---|---|
| Tarantulas | Ground-level outdoor habitats | Very large, hairy body | Size is not a danger indicator; generally avoid handling |
| Wolf spiders | Ground, vegetation, houses through gaps | Active hunter, dark cephalothorax stripes, large upper eyes | Generally not dangerous to people or pets |
| Black-and-yellow garden spider (Argiope aurantia) | Gardens and other open vegetation | Large orb web; female much larger than male; black-and-yellow pattern | Harmless to people |
| Spinybacked orbweavers (Micrathena, Gasteracantha) | Wooded areas | Flattened, crab-like abdomen with spines | Not identified as a Texas spider of medical concern |
| Long-jawed orbweavers (Tetragnatha) | Near water and flying-insect concentrations | Elongated jaws and orb webs | Venom not considered dangerous to people |
| Crab spiders | Leaves and flowers | Front legs held sideways; ambush hunter; some change color | Not identified as a Texas spider of medical concern |
| Brown recluse (Loxosceles reclusa) | Dry, undisturbed indoor and outdoor hiding places | Six eyes in three pairs; overall body features matter more than a violin mark | One of the two Texas spiders of medical concern |
| Widow spiders (Latrodectus) | Woodpiles, garages, crawl spaces, meters and eaves | Female often has a red or yellowish underside marking | One of the two Texas spiders of medical concern |
| Spitting spiders (Scytodes) | Indoors | Dome-shaped spotted cephalothorax; long banded legs | Harmless, slow-moving indoor spider |
| Cellar spiders (Pholcidae) | Dark corners, cellars, crawl spaces and garages | Small body with very long, thin legs | Not known to bite people |
| Funnel weavers and grass spiders | Grass, shrubs, building corners; indoors in late summer and early fall | Funnel-shaped web near the ground | Beneficial predators; can be mistaken for recluses |
The 11 common Texas spider groups
1. Tarantulas
Tarantulas are the unmistakable giants of this list: large, densely hairy spiders that spend most of their time on or near the ground. Texas A&M includes tarantulas among its described Texas spider groups. Their dramatic size often causes alarm, but size alone does not predict medical danger. Give one space rather than attempting to pick it up, and keep curious pets from pawing at it.
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2. Wolf spiders
Wolf spiders actively chase or ambush prey instead of relying on a capture web. They may enter a house through gaps around doors, windows or other openings. Texas A&M says they are generally not dangerous to people or pets and are frequently mistaken for recluse spiders.
Look for dark stripes on the cephalothorax and a conspicuously large pair of eyes on top of the head. A wolf spider’s active movement and robust, often patterned body also contrast with the recluse’s preference for secluded cracks and crevices. Avoid using color alone: lighting, dust and individual variation can make both groups look brown.
3. Black-and-yellow garden spider (Argiope aurantia)
This orbweaver builds a conspicuous, circular web in gardens and other vegetation. Females are much larger than males and show the bold black-and-yellow appearance that gives the common name. Texas A&M describes the species as common in Texas and harmless to people.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteThe web can be inconvenient when it crosses a walkway. As Texas A&M AgriLife Extension’s spider guide puts it: “Though orbweavers are harmless to people, their large webs can be a nuisance.” Remove a web with a broom or vacuum when necessary, while leaving the spider itself undisturbed if it is in a safe location.
4. Spinybacked orbweavers (Micrathena and Gasteracantha)
These small orbweavers are associated with wooded areas. Their flattened abdomens carry prominent spines and may be white, yellow, orange or red, giving them a crab-like silhouette. The unusual outline is a better clue than any single color.
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They wait in or near an orb web for flying prey. Their appearance is startling, but this group is not identified by Texas DSHS as one of the state’s two spiders of medical concern. Do not squeeze a spider simply to inspect its spines; use a container, a clear photograph of the whole body, or leave it in place.
5. Long-jawed orbweavers (Tetragnatha)
Long-jawed orbweavers have elongated jaws and build orb webs, often near water or where abundant flying insects provide food. Large communal webs have been reported in those conditions. Their venom is not considered dangerous to people.
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Because their webs may span railings, vegetation or lights, they are sometimes noticed before the spiders are. Relocating a web from a heavily traveled path is usually enough; broad insecticide treatment is unnecessary for a harmless web-building predator.
6. Crab spiders
Crab spiders commonly sit on leaves and flowers with their front legs held to the sides, creating a crab-like stance. They ambush visiting insects instead of constructing a capture web. Some species can change color to blend with a flower.
That camouflage means a pale spider on a blossom may be difficult to see until it moves. Crab spiders are not listed by Texas DSHS as a Texas spider of medical concern. Observe them without disturbing pollinators or applying a spray to the entire plant.
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7. Brown recluse (Loxosceles reclusa)
Brown recluses are nocturnal hunters that hide during the day in cracks, dry crevices, firewood, cardboard boxes, attics, crawl spaces and wall voids. They may bite when trapped against skin, including inside clothing or bedding. Texas DSHS lists the brown recluse as one of the two Texas spiders of medical concern and says it occurs indoors and outdoors throughout the state.
Do not identify one solely by the familiar “violin” marking. The six eyes arranged in three pairs are a more useful diagnostic feature when visible, and the overall body proportions and habitat must agree. Many harmless brown spiders have a vaguely violin-shaped patch. If you can safely contain the spider, preserve it for professional identification; do not handle it with bare hands.
8. Widow spiders (Latrodectus)
Female widow spiders favor sheltered, rarely disturbed sites such as woodpiles, garages, crawl spaces, utility meters and eaves. A female often has a red or yellowish marking on the underside, but the shape is variable and is not always a perfect hourglass.
Texas DSHS identifies widow spiders as the other Texas spider group of medical concern. Its description notes that widow venom is neurotoxic. Never reach blindly into a woodpile, box or sheltered corner; use gloves and a light, and move stored items with a tool before placing your hands nearby.
9. Spitting spiders (Scytodes)
Spitting spiders are slow-moving indoor spiders. Texas A&M contrasts their domed, spotted cephalothorax and long banded legs with the flatter body of a recluse. The name refers to their method of immobilizing tiny prey, not to a threat to people.
If one is indoors, capture it with a glass and card or remove it with a vacuum. Its presence does not by itself indicate a dangerous infestation.
10. Cellar spiders (Pholcidae)
Cellar spiders have very small bodies and exceptionally long, thin legs. They occupy dark corners, cellars, crawl spaces and garages. School integrated-pest-management guidance says they generally stay in place, do not bother people and are not known to bite.
Their loose webs can collect dust. Remove the web with a duster or vacuum if appearance matters, but routine spraying is not needed for a spider that is providing insect control.
11. Funnel weavers and grass spiders
Funnel weavers and grass spiders make funnel-shaped webs near the ground in grass, shrubs or building corners. They can enter buildings in late summer and early fall and are sometimes confused with recluses. Texas A&M describes them as beneficial predators.
A funnel web is a useful habitat clue, not a species-level diagnosis. Inspect the spider’s body and eyes rather than concluding that every brown spider near a web is a recluse.
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Which Texas spiders are medically important?
Texas DSHS identifies black widows and brown recluses as the two Texas spiders of medical concern. It explains that widows have neurotoxic venom, while recluse venom can cause local or systemic effects. Reaction severity varies with bite location, venom amount, bite depth, age and other factors. Texas A&M School IPM also notes that bites from some other spiders can warrant medical attention, so “not one of the two” does not mean every bite is trivial.
What to do after a suspected spider bite
- Move away from the spider. Do not risk a second bite while trying to catch it.
- Wash the site. Clean it thoroughly with soap and water or an antiseptic.
- Use an ice pack. A wrapped ice pack may help pain and swelling.
- Seek treatment advice. Contact your family physician or the Texas Poison Center Network at 1-800-222-1222.
- Preserve the spider only if safe. A container can support positive identification, but do not handle a suspected widow or recluse directly.
- Get urgent care for severe or systemic symptoms. Escalating pain, muscle cramping, breathing problems, widespread symptoms or other serious changes require prompt medical evaluation.
Do not rely on a lesion photograph to diagnose a recluse bite. Texas A&M notes that bacterial infections can create similar lesions, so a clinician should assess concerning wounds.
How to check your house safely
Texas A&M School IPM recommends a flashlight inspection around corners, windows, light fixtures, wall edges, under cabinets and furniture, and protected exterior spaces. Wear gloves when moving stored objects. Look for both spiders and the insects they hunt; abundant prey can support more spiders.
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- Set monitoring traps. Place glueboards, also called spider sticky traps or sticky cards, in suspected travel areas. They monitor and capture spiders; they are not a species-identification tool or a guaranteed treatment.
- Remove accessible webs. Use a duster, broom or vacuum, including around window frames and sheltered corners.
- Vacuum prey and spiders. Regular removal reduces both spiders and the insects that attract them.
- Reduce entry and shelter. Prune vegetation away from the structure, reduce clutter, seal boxes and keep stored materials off the floor when practical.
- Adjust lighting. Direct outdoor lights away from the building where possible, because lights attract flying insects.
Texas A&M guidance says interior or exterior insecticide sprays are generally ineffective at reducing spider populations. It also warns that pyrethroids can be hazardous to aquatic insects and fish. Follow every product label and avoid routine spraying around drains, ponds and waterways.
When professional control makes sense
A substantial suspected brown recluse infestation deserves a reputable professional pest-control company using an integrated approach. Texas A&M urban-entomology guidance includes sticky-card monitoring and capture, sanitation, clutter reduction, sealed boxes and vacuuming. No consumer spray or single trap guarantees elimination. Ask the professional to explain where activity is concentrated, how monitoring will be evaluated and which nonchemical steps will continue after treatment.
What the evidence says about Texas spider diversity
Texas A&M AgriLife Extension’s Field Guide to Common Texas Insects states: “There are about 900 species of spiders in Texas and only a few are mentioned here.” The figure’s publication year is not stated on that page. A Texas A&M publication listing dated December 7, 2021 describes its six-page spider guide as covering common Texas spiders, ways to distinguish harmless from dangerous spiders, and prevention and control. Those facts explain why an identification guide must be selective rather than claim a definitive statewide top eleven.
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