Huntsman spiders are large spiders, with leg spans to 30 cm, as in Heteropoda maxima so far recorded in Laos. Their crab-like legs splay out sideways for speed and flexibility to squeeze into crevices to chase prey.
They are members of the family Sparassidae with more than 1,300 species. According to an article from Cornell University (2022), only 5 species show social behaviors like sharing prey, while most species go after prey alone and depend on agility and strength to catch their meals.
The spiders live in tropical and subtropical areas, especially in Asia, Africa, and Australia. The Australian Museum states that their flattened bodies and built-in camouflage enable them to stay hidden while hunting insects without using webs.
| Characteristic | Description |
| Scientific Name | Family Sparassidae |
| Common Name | Huntsman Spider |
| Size | Large-bodied spiders with leg spans ranging from 10–30 cm depending on species; body length 1–4 cm. |
| Color & Appearance | Typically brown, gray, or tan with banded legs; flattened bodies allow movement in narrow spaces; hairy legs with spiny appearance in some species. |
| Legs | Long, laterigrade legs (extend sideways) adapted for speed and climbing; capable of running rapidly across walls and ceilings. |
| Eyes | Eight eyes arranged in two forward-facing rows; good vision for detecting movement and prey. |
| Habitat | Found in forests, woodlands, gardens, and homes; often under bark, rocks, or furniture, and inside sheds or houses. |
| Behavior | Nocturnal hunters; do not build webs for catching prey; ambush or actively chase down insects and other arthropods; very fast and agile. |
| Diet | Feeds on insects, small lizards, and other arthropods; uses speed and venom to subdue prey. |
| Venom | Mildly venomous to humans; bites can cause localized pain, swelling, or mild allergic reactions, but are not medically significant in most cases. |
| Reproduction | Males perform courtship dances before mating; females lay eggs in silk sacs and guard them until spiderlings hatch. |
| Lifespan | Typically 2–3 years in the wild; some larger species may live up to 5 years. |
| Geographic Range | Worldwide distribution, especially in tropical and subtropical regions including Australia, Asia, Africa, and the Americas. |
| Adaptations | Flattened body for hiding in narrow crevices, strong and fast legs for hunting, nocturnal activity to avoid predators, and venom to subdue prey. |
| Predators | Birds, lizards, larger spiders, small mammals, and parasitic wasps. |
| Activity Time | Primarily nocturnal; active at night when hunting insects and other prey. |
| Prevention Tips |
Seal cracks and gaps in homes and sheds. Reduce clutter and remove woodpiles or debris around homes. Keep outdoor lighting minimal to avoid attracting prey insects. Regularly inspect and clean areas under furniture and in storage spaces. |
| How to Get Rid of Them |
Gently capture and release outdoors if found indoors. Remove hiding spots and clutter. Use insecticides or spider traps in extreme infestations. Maintain vigilance around homes in regions with high spider populations. |
What are the Physical Characteristics of Huntsman Spiders
Here are the four physical characteristics of huntsman spiders:
- Size:The leg size of huntsman spiders reaches 15 cm and the body size is approximately 2 cm. This causes their legs to appear disproportional with their body.
- Color: They are typically brown, gray, or sandy with darker markings. These tones allow them to blend in more with the natural bark, stone, or soil.
- Leg Shape: Their legs are also stretched laterally, not bent beneath the body. The design resembles crabs and allows them to be fast when moving around the walls, ceilings, and open spaces
- Eyes: They possess eight eyes in two anterior rows. This structure helps them have more depth and rapid reaction when they are hunting.
What is the Behavior and Lifestyle of Huntsman Spiders
Here are the four steps of the behavior and lifestyle of huntsman spiders:
- No Webs: Huntsman spiders do not weave to trap prey. They are hunters, they rely on speed and power to attack insects in an open space instead of letting insects get trapped in the trap.
- Nocturnal: These spiders are night time and remain mostly concealed during the daytime. They mainly hunt at night when the insects are awake and they have a better probability of locating food without exposing themselves to predation.
- Diet: They eat insects, cockroaches, and other small invertebrates. Huntsman spiders are important in keeping insect populations in check in natural habitats as well as in human homes.
- Speed: They are quick runners and climbers. They are good hunters and difficult to catch, with their lateral legs permitting them to move a lot faster than predators across walls, ceilings, and open areas.
How to Identify Huntsman Spiders?
Here are four methods to identify huntsman spiders:
- Leg Orientation: The legs of huntsman spiders are turned to the side and they appear like a crab. This unique pose clearly distinguishes them among other ordinary spiders with their legs oriented either forward or behind the spider.
- Speed & Movement: They move fast on floors, ceilings, and walls that one can easily see them and tell their difference with the more slow web-building spiders found inside.
- Size:Most house spiders are smaller than their flat bodies. Adult huntsman spiders are frequently more slender, and stretched, with long legs, so that they seem much larger than their own bodies.
- Habitat Check:They are frequently seen resting on walls, ceilings or bark. Their flat bodies enable them to hide in tight spaces such as behind furniture, under loose bark or even cracks in external structures.
How to Prevent Huntsman Spider Encounters?
Here are the four ways to prevent huntsman spider encounters:
- Seal Entry Points: Seal small gaps around windows, doors, and vents. Closing such entry points can help reduce the chances of outdoors spiders to the indoors that the spider wants to find shelter or to find food.
- Maintain Clean Homes: Clean out rooms, garages, and storage spaces. The hunters are hard to catch indoors, and clean spaces leave fewer places to hide a huntsman spider.
- Outdoor Precaution: Vacuum underground of garden tools, gloves and stored items. When it is dark and no one is around, huntsman spiders tend to be hiding here during the day.
- Lighting Control: Turn off outdoor lights at night. Huntsman spiders have been known to follow their food to homes and also low insect numbers out of doors suggests a low chance of spider following its food to a home.
- Regular Inspection:Inspect sheds, garages, and woodpiles on a regular basis. It is also advisable that the spiders are checked frequently to identify them.And eliminate them before they can establish themselves in permanent shelters in the buildings or semi outdoor locations.
If you’re seeing spiders, schedule a same-day inspection now!
What are the Risks and Dangers of Huntsman Spiders
Here are the three risks and dangers of huntsman spiders:
- Bite Effects: Huntsman spider bite causes local pain, redness, and swelling. In other cases, people also have headaches or nausea. These effects are temporary and hardly need medical treatment after the discomfort naturally settles.
- Venom: Their venom is mildly to moderately toxic. It is effective against insect prey but has little effect on humans, and is much less toxic than venom from more dangerous spider species.
- Aggression: Huntsman spiders are shy and non-contact. They bite only when grabbed or cornered; their instinct is to flee rather than fight. Their behavior makes them relatively low-risk as compared to spiders known for defensive or aggressive behavior.
