Huntsman Spider: Australia's Sparassidae Family

WildGuardian risk label: LOW. This page is about Sparassidae, the huntsman spider family, not one named species. “Huntsman spider” therefore covers many Australian spiders rather than a single animal with one fixed appearance, range or set of habits. The Australian Museum lists 94 described Australian species in the family, while CSIRO also places huntsmen in Sparassidae. [1] [3]

That scope matters. A detail reported for a Brown, Badge, Social or Giant Grey Huntsman cannot automatically be applied to every huntsman. The most useful way to view a huntsman is as a familiar group of active spiders with shared broad traits, while allowing that the species in a particular house, garden or bushland setting may differ.

What counts as a huntsman spider?

Huntsmen are spiders in the family Sparassidae. They are also called giant crab spiders, a name that points to a common body plan rather than a relationship with crabs. The Australian Museum describes huntsmen as generally large and long-legged, mostly grey to brown and sometimes banded on the legs. Many — particularly several bark- and crevice-dwelling genera — have flattened bodies. Their leg joints spread forward and sideways in a crab-like fashion, which helps them use narrow spaces. [1]

These are helpful family-level clues, not a field diagnosis. Brown colouring, a broad leg span and a flattened outline are not enough to identify every spider in Australia, let alone name a huntsman species. CSIRO notes a family-level eye pattern of two rows of four eyes, but close examination is not a sensible requirement for a safe household decision. [3] Use visible features to appreciate the animal from a distance, rather than treating an online image or a quick glance as confirmation.

Huntsmen also vary within the family. The Australian Museum notes that some groups are notably flattened, while Brown and Badge Huntsmen are less flattened. [1] A different shape, pattern or location does not by itself make an animal more or less medically significant. Healthdirect cautions that it can be difficult in Australia to know whether a spider bite is dangerous. [5]

Australian range and habitat

At the family level, huntsman genera are generally widely distributed throughout Australia. There are important limits to that broad statement: the Australian Museum says Heteropoda is absent from most of south-eastern Australia, and Tasmania has only a few huntsman species, including Delena cancerides and Neosparassus species. [1] This is why “huntsman occurs Australia-wide” should not be read as “every huntsman species occurs everywhere.”

The family uses a range of sheltered places. Australian Museum records describe huntsmen under loose tree bark, in rock-wall crevices and logs, beneath rocks and slabs of bark on the ground, and on foliage. [1] Queensland Museum similarly says that most are naturally adapted to life under bark. [2] These facts help explain why a huntsman may turn up on a wall, behind a curtain or in another built space: many species sometimes enter houses, and sheltered vertical surfaces can be attractive. [1] It does not mean every house visitor is the same species or came from the same natural habitat.

Behaviour and ecological role

Huntsmen do not build a silken capture web. Queensland Museum describes them as sit-and-wait or cursorial hunters: in other words, they wait for prey or move to hunt it. [2] The Australian Museum records insects and other invertebrates as food. [1] That makes a huntsman an active invertebrate predator, whether it is using bark, a crevice or a household surface as cover.

The familiar burst of movement is consistent with this hunting style. Museums Victoria describes huntsmen as generally large and fast-moving; its Victorian household guide says they are active at night when hunting for food. [4] It also says that, unless defending an egg sac, huntsmen are usually timid and their first response to danger is to run. [4] That is a general observation, not a promise about every interaction: avoid crowding, prodding or trying to test a spider’s response.

Silk still has a role. Queensland Museum describes huntsman egg sacs as large, circular, lens-shaped discs of white silk and says females sit on and guard them during the brooding period. [2] Egg-sac defence is one reason this family should never be treated as a uniform, predictable group.

Safer encounters at home, in the garden and outdoors

A calm, distance-first response is appropriate. Healthdirect advises Australians to leave spiders alone and teach children not to touch them. [5] For huntsmen, that is preferable to trying to identify an individual by touch, move it with bare hands or provoke it for a closer look. Keep children and pets from approaching, and allow space rather than making the spider a handling problem.

Simple habits reduce unexpected encounters without claiming that any one method excludes every spider. Healthdirect suggests wearing gloves when gardening and checking shoes before putting them on. [5] Queensland Health also advises checking outdoor furniture, toys and cots for spiders, especially in warmer months, and teaching children never to touch spiders. [6] These are sensible precautions around any spider that may be concealed in a sheltered spot; they are not evidence that a huntsman is inherently dangerous.

If a spider is in a vehicle or another place where surprise could create a distraction, do not put yourself in an unsafe situation to inspect it. Treat the immediate human safety issue first. This page deliberately does not provide capture, handling or relocation instructions.

If a bite is suspected

Queensland Museum says most huntsman species pose little or no threat despite their appearance. [2] Still, bite advice should be based on symptoms and uncertainty, not on confidence in a visual identification. Queensland Health says bites from “other spiders” can cause mild redness, pain and inflammation. [6]

For a suspected bite from a spider that is not a funnel-web, mouse spider or redback, Healthdirect advises washing the area with soap and water, applying antiseptic cream if available, and using a wrapped ice pack to reduce swelling and manage pain. It notes that paracetamol or ibuprofen may also be used for pain. Do not place ice directly on skin. [5] Queensland Health gives comparable advice for other spider bites: soap and water, antiseptic if available, an ice pack, pain relief and an antihistamine for swelling, redness and itch. [6]

Seek medical advice if pain is substantial, if the bite does not settle within a few hours, if swelling or itch worsens after 24–48 hours, or if you are worried. [5] Call Triple Zero (000) for signs of anaphylaxis, including difficult or noisy breathing, tongue or throat swelling, persistent cough, dizziness or collapse. [5] Pressure immobilisation is not routine huntsman-bite care: Healthdirect says to use it only for funnel-web or mouse spider bites. [5] If the spider or circumstances instead suggest a funnel-web or other big black spider, treat that as an emergency and call 000 rather than assuming it was a huntsman. [5]

Frequently asked questions

Is “Huntsman Spider” a species name?

No. For this record, the scientific name is Sparassidae, a spider family. Australia has 94 described species in that family according to the Australian Museum, so this page cannot assign one species’ range, size or markings to all huntsmen. [1]

Where in Australia are huntsmen found?

Huntsman genera are generally widely distributed across Australia, but distributions vary by genus and species. Heteropoda is absent from most of the south-east, and Tasmania has only a few huntsman species. [1]

Do huntsman spiders make webs to catch food?

Queensland Museum says huntsmen do not build a silken capture web. They are sit-and-wait or cursorial hunters, and Australian Museum lists insects and other invertebrates as their food. [2] [1]

Why might a huntsman be inside a house?

Many huntsman species sometimes enter houses. Their natural association with bark and sheltered vertical surfaces helps explain why built spaces can also provide usable cover. [1] [2]

Are huntsman spiders dangerous to people?

Queensland Museum says most huntsman species pose little or no threat, and Healthdirect states that Australian spiders outside its funnel-web/big-black and redback categories are generally harmless. [2] [5] A suspected bite can still be painful or cause local symptoms, so follow official bite guidance and seek care if symptoms are concerning or worsening. [5] [6]

References

1. [1] Huntsman Spiders
2. [2] Huntsman spiders
3. [3] Meet the families: A Field Guide to Spiders of Australia
4. [4] Your eight-legged housemates
5. [5] Spider bites
6. [6] Spider bites