Trapdoor Spiders in Melbourne
Melbourne's most misidentified burrowing spider — how to recognise one, how it differs from a funnel-web, and what its burrows mean for your garden.
Written by Muzi Tsolakis, Founder and Competency Assessor, Pest Management Victoria. Last reviewed 22 August 2026.
Museums Victoria notes that the Melbourne trapdoor spider is regularly mistaken for a Sydney funnel-web, and that confusion is behind most of the calls we take about it. It is a stout, dark, burrowing spider with visible fangs, dug into a hole in the lawn, and to a worried householder it ticks every box. The reassuring truth is that the trapdoor's bite is not dangerous, and the features separating it from a funnel-web are learnable. This guide covers the Melbourne trapdoor spider itself, the identification points that settle the question, the burrows and the long lives lived inside them, and the first aid that applies. Read it alongside our funnel-web spider guide, the mouse spider guide for the other stout burrower it is confused with, and the wider spiders guide.
How to identify the Melbourne trapdoor spider
Melbourne's common species is Stanwellia grisea, a ground-dwelling spider of southern Victoria that Museums Victoria describes as brown-bodied with paler legs and abdomen, a dark, mottled, rib-like pattern along the top of the abdomen, and golden hairs on some males. Males reach about 25 millimetres in body length and females 35, and the large fangs become visible when the spider feels threatened. Museums Victoria notes directly that its size, colour and fangs cause it to be regularly mistaken for a Sydney funnel-web, and it is a spider the weekend gardener meets while digging soil or moving rocks.
The eyes offer a close-range check against a mouse spider, whose eyes are spread across the front of the carapace where the trapdoor's sit in a compact group; against a funnel-web the eyes will not settle it, because a funnel-web's are closely grouped too. Held against the funnel-web, the broader tells are texture and temperament. Trapdoor spiders carry a dusty look from fine golden-brown hairs across a weakly arched carapace, where a funnel-web's carapace is glossy, sparsely haired and lower. Male trapdoors carry a small double spur halfway along the first pair of legs and thick, boxing-glove palps; a male funnel-web's large spur sits on the second pair. And a trapdoor is quite timid, rearing up only under real provocation, where a funnel-web rears readily and strikes with sudden lunges.
The burrow, and the missing trapdoor
The name promises a hinged lid, and around Melbourne the promise is rarely kept. Museums Victoria records that the Melbourne trapdoor spider's burrow entrance has no trapdoor at all: both sexes dig silk-lined burrows up to 40 centimetres deep in soft earth, in gardens, lawns and open ground. The Australian Museum describes the same open, lidless burrows for the brown trapdoor spiders of eastern Australia, often scattered over lawns, each a small, neat hole finished with a silken rim attached to the surrounding grass or leaf litter, with no silk trip-lines radiating out from it.
The lid-builders do exist. The sigillate trapdoor spiders of southern Australia, found mainly west of the Great Dividing Range and recorded in Victoria, fit their burrows with doors of soil or litter, and some weave twig trip-lines into the rim to feel for passing prey. For telling a burrow's owner at a glance, the silk is the guide: a funnel-web's entrance carries a conspicuous mat of irregular silk trip-lines radiating outward, while the Melbourne trapdoor's open, silk-collared hole shows at most a few strands of silk at the rim. From that hole the spider hunts by night, waiting at the entrance to ambush crickets, moths, beetles and grasshoppers passing within reach.
A long life in one hole in the ground
Trapdoor spiders are among the longest-lived spiders in the country. The Australian Museum records lifespans of 5 to 20 years, with several years needed simply to reach maturity. A female spends virtually that entire span in or near one burrow, deepening and re-lining it as she grows, laying her eggs several months after mating and guarding them inside it. The burrow in your garden bed has likely been occupied far longer than you have known it was there.
Males live the same settled life until maturity, then leave the burrow for good to roam in search of a mate. For the Melbourne trapdoor spider that roaming usually happens in autumn and early winter, and it is what produces almost every indoor encounter: Museums Victoria notes the wandering takes males into odd places, houses and swimming pools among them. A stout brown spider on the laundry floor in May is far more plausibly a wandering male trapdoor than anything more sinister, though the identification rules above are still worth applying before anyone relaxes.
Bites and first aid
Better Health Channel classes trapdoor spiders as not considered dangerous to humans, with the caveat that the size of the fangs makes a bite deep and painful, with local swelling. The Australian Museum's advice matches: the bite is not dangerous, apply a cold pack to relieve the pain, and seek medical attention if symptoms persist. Better Health Channel and healthdirect fill in the detail for bites of this class: wash the site with soap and water, apply an ice pack wrapped in cloth for 15 minutes and reapply if pain continues, and see a doctor if the pain is severe, the bite has not settled within a few hours, or swelling and itching worsen over the next day or two.
The one qualification is identification confidence. A pressure immobilisation bandage is reserved for funnel-web and mouse spider bites, and if the spider genuinely cannot be ruled out as one of those, the safe course is the full emergency response: bandage, immobilise, call 000. The Australian Museum suggests safely collecting the spider for identification where possible, precisely because trapdoors are mistaken for funnel-webs so often. A photograph taken at a sensible distance does the same job.
Living with trapdoors on a Melbourne property
Most of the year a trapdoor spider asks nothing of you. Females never leave the burrow district, hunt at night, and take a steady toll of the crickets, moths and beetles moving through the garden. The season to be mindful is the male wandering period through autumn and early winter: check the pool before reaching in, and follow the same habit the Australian Museum recommends where ground-dwelling spiders occur, checking clothing, shoes and bedding left at floor level before use.
Gardening is the other point of contact, since digging soil and moving rocks is how Museums Victoria says most people meet one. Gloves handle that risk almost entirely. If burrows keep appearing close to paths, sandpits or play areas, or spiders keep turning up indoors through the cooler months, that is the point where a professional look at the property's ground harbourage earns its keep.
How Protech can help
Trapdoor calls are identification jobs more often than treatment jobs, and we say so honestly: a timid, long-lived burrower that keeps garden insects down is frequently better left alone once everyone knows what it is. Where the burrows sit in the wrong places, or the property is turning up dark burrowing spiders that nobody can confidently name, we inspect the ground, identify the species present, and treat the burrows and surrounding harbourage so the areas children and pets use are clear.
Our team covers spider control for homes and commercial premises across Melbourne, and every spider treatment is backed by our pest-free guarantee. If you have found a burrow or a stout brown spider you cannot place, call our Melbourne team on 03 9449 4244 or request a free quote, and we will arrange a visit, most often the same day.
Trapdoor spider FAQs
Are trapdoor spiders dangerous?
No. Better Health Channel classes trapdoor spiders as not considered dangerous to humans, while noting that the size of their fangs means a bite can be deep and painful with local swelling. The Australian Museum gives the same picture: the bite is not dangerous, though it may hurt and swell locally. That puts the trapdoor in a completely different category from the funnel-web it so closely resembles, which is exactly why a confident identification is worth having.
How do I tell a trapdoor spider from a funnel-web?
Look at the sheen and the temperament. Trapdoor spiders have a dusty look from fine golden-brown hairs on the carapace, and the carapace sits weakly arched in side profile; a funnel-web's carapace is glossy and sparsely haired. Trapdoor males are quite timid and mostly try to get away, where a funnel-web rears up readily and lunges when striking. The burrows differ too: a funnel-web's entrance carries a conspicuous mat of irregular silk trip-lines radiating outward, while the Melbourne trapdoor digs an open, silk-collared hole with at most a few strands of silk at the rim. When you cannot be sure, treat the spider as the more dangerous possibility and keep clear.
Why is it called a trapdoor spider if the burrow has no door?
The common name comes from the group, and much of the group never earned it. Museums Victoria notes that the Melbourne trapdoor spider's burrow entrance has no trapdoor at all, and the Australian Museum says the same of the brown trapdoor spiders of eastern Australia, whose burrows are open holes with a neat silk collar. The lid-builders are the sigillate trapdoor spiders found across southern Australia west of the Great Dividing Range, which do fit soil or litter doors to their burrows. Around Melbourne, the open-holed Stanwellia grisea is the trapdoor you are most likely to meet.
What is the first aid for a trapdoor spider bite?
Wash the bite with soap and water and apply a cold pack, wrapped in a cloth rather than placed directly on the skin. Better Health Channel gives 15 minutes, reapplied if pain continues, and healthdirect advises seeing a doctor if there is a lot of pain, if the bite has not settled within a few hours, or if swelling or itching worsens over the following day or two. A pressure immobilisation bandage is only for funnel-web and mouse spider bites, so if you genuinely cannot rule those out, apply the bandage and seek urgent medical help rather than gambling on the identification.
How long do trapdoor spiders live?
A remarkably long time for a spider. The Australian Museum records lifespans of 5 to 20 years, with several years needed just to reach maturity. Females spend essentially that whole life in and around a single burrow, which is why a trapdoor burrow in a garden bed is a long-term resident, not a passing visitor, and why the males found wandering in autumn and early winter are the ones people actually meet.
Do you guarantee spider treatments?
Yes. Spider treatments, internal and external, carry a six-month guarantee: if spiders return within that period we come back and re-treat at no additional charge. The guarantee covers the pests and the areas treated, and the terms are confirmed in writing with your quote.
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