South Australia is home to a wide variety of spiders. While most play an important role in controlling insect populations, a few species can pose risks if they find their way into your home or garden. For Adelaide homeowners, it’s important to know which spiders are common in our state, what the real risks are, and how to manage them safely.
In this guide, we’ll walk through the “big three” spiders of South Australia—redbacks, white-tails, and huntsman spiders—plus three less common species you may also come across. We’ll also bust some myths about spider bites, share prevention tips, and explain when it’s time to call in professional pest control.
In this guide, we’ll walk through the “big three” spiders of South Australia—redbacks, white-tails, and huntsman spiders—plus three less common species you may also come across. We’ll also bust some myths about spider bites, share prevention tips, and explain when it’s time to call in professional pest control.
The Big 3 Spiders of South Australia
Redback Spiders
Redbacks (Latrodectus hasselti) are arguably the most infamous spider in Adelaide. Recognisable by the red stripe on the female’s back, these spiders prefer sheltered areas like sheds, outdoor furniture, garages, and children’s play equipment.
White-Tail Spiders
White-tails (Lampona species) often cause concern due to persistent myths about their bites. They’re slim, fast-moving spiders with a distinct white tip on the abdomen, and are commonly found inside homes.
Huntsman Spiders
Huntsman spiders (Sparassidae family) are large, long-legged spiders often found clinging to walls, ceilings, or hiding in cars. Their size alone can give people a fright, but they are mostly harmless.
Redbacks (Latrodectus hasselti) are arguably the most infamous spider in Adelaide. Recognisable by the red stripe on the female’s back, these spiders prefer sheltered areas like sheds, outdoor furniture, garages, and children’s play equipment.
- Risk: Redbacks can deliver a venomous bite that causes intense pain, sweating, and nausea. However, deaths are extremely rare thanks to effective antivenom.
- Behaviour: They are not aggressive and generally only bite if disturbed.
- Season: Numbers peak in warmer months but they’re found year-round.
White-Tail Spiders
White-tails (Lampona species) often cause concern due to persistent myths about their bites. They’re slim, fast-moving spiders with a distinct white tip on the abdomen, and are commonly found inside homes.
- Risk: Bites may cause redness, swelling, and pain similar to a bee sting. They do not cause flesh-eating ulcers, despite the widespread myth.
- Behaviour: Active hunters that roam at night looking for other spiders (particularly black house spiders).
- Season: More commonly spotted during warmer months when they wander indoors.
Huntsman Spiders
Huntsman spiders (Sparassidae family) are large, long-legged spiders often found clinging to walls, ceilings, or hiding in cars. Their size alone can give people a fright, but they are mostly harmless.
- Risk: Non-venomous to humans. Bites are rare and may cause mild localised pain.
- Behaviour: Shy, fast-moving, and excellent at controlling cockroaches and insects.
- Season: Often wander indoors during summer searching for cooler shelter.
Other Spiders You May See in Adelaide
 | Wolf Spiders Ground-dwelling hunters with strong eyesight, wolf spiders (Lycosidae family) are often seen darting across lawns and gardens. They don’t build webs but chase down prey.
Trapdoor Spiders Trapdoors are stocky, burrowing spiders that build silk-lined burrows with a “trapdoor” lid. Found in undisturbed soil and bushland, they are rarely seen indoors.
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Garden Orb-Weavers
These spiders are well known for their large, circular webs that appear overnight in gardens.
These spiders are well known for their large, circular webs that appear overnight in gardens.
- Risk: Harmless to humans, though webs can be a nuisance across walkways.
- Benefit: They’re excellent at catching mosquitoes and flies.
Spider Bite Myths vs Facts
Spiders often get a bad reputation due to myths that have circulated for decades. Let’s clear up the most common ones:
- Myth: White-tail spider bites cause skin ulcers.
- Fact: There is no scientific evidence to support this. Most bites cause only mild symptoms.
- Myth: All large spiders are dangerous.
- Fact: Huntsman spiders, while intimidating, are non-venomous and beneficial for insect control.
- Myth: You’ll know immediately if a spider has bitten you.
- Fact: Some bites are painless at first and only cause symptoms later. Always seek medical advice if unsure.
Preventing Spiders Around Your Home
You can reduce the likelihood of spiders making themselves comfortable in and around your Adelaide property with some simple steps:
- Seal cracks and gaps around doors, windows, and foundations.
- Clear away webs regularly from eaves, sheds, and outdoor furniture.
- Store shoes, gloves, and toys off the ground.
- Keep outdoor lighting to a minimum (insects attract spiders).
- Schedule regular general pest sprays to reduce insect populations that spiders feed on.
When to Call MD Pest Control
While most spiders are harmless, you don’t want them moving in with you. If you’re finding redbacks near play areas, white-tails inside, or webs across your outdoor living spaces, it’s time to book a professional pest spray.
At MD Pest Control, we provide:
At MD Pest Control, we provide:
- Flexible 6–12 monthly general pest sprays to control spiders, ants, and cockroaches.
- Safe, family-friendly treatments with no lock-in contracts.
- Licensed, independent service trusted by Adelaide homeowners.
Final Thoughts
Spiders are a natural part of South Australia’s environment, but that doesn’t mean you need to share your living room with them. Understanding the risks—and the myths—helps reduce fear, while professional pest control gives you peace of mind.
With regular maintenance and the right prevention steps, you can keep your home spider-free all year round.
With regular maintenance and the right prevention steps, you can keep your home spider-free all year round.
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