White-tail worry
White-tail spider bite myths in Australia
White-tail spiders cause a lot of worry in Australia, especially around bite myths. Current Australian health guidance says white-tail spiders are not considered dangerous to humans and evidence does not support the common skin-ulcer myth.
Start here
Do not assume a slow wound is a white-tail bite
A white-tail spider may cause local pain, swelling or irritation, but a mark on the skin usually cannot prove which spider was involved. Seek medical advice for severe pain, spreading symptoms, infection signs, allergy symptoms or if you are worried.
Quick checks
Compare the clues before choosing a match
- White spot at the rearLook for a pale tip near the end of a cigar-shaped body, not a broad white stripe across the whole spider.
- Wandering hunterWhite-tailed spiders often wander indoors and do not rely on a capture web like house spiders do.
- Hunts other spidersThey are often found where other spiders live, including around black house spider webs.
- Bite uncertaintySkin marks can come from many causes. Use symptoms and medical advice rather than guessing from the wound.
Profiles to compare
Open the closest Australian spider profiles
These links support the question page rather than replacing the detailed spider profiles.
Painful but usually not life-threateningWhite-tailed spiderDark, cigar-shaped wandering spider with a pale spot at the tip of the abdomen, often seen indoors at night.
Usually low riskBlack house spiderDark, sturdy house spider that builds messy lace-like webs around windows, walls, fences and crevices.
Usually low riskBrown house spider / cupboard spiderSmall brown comb-footed spider in messy indoor webs, sometimes confused with redbacks or false widows.
Usually low riskDaddy-long-legs spiderVery thin-legged indoor spider in loose corner webs, common in houses and garages.
Painful but usually not life-threateningWolf spiderFast ground-running hunter, often mottled brown or grey, sometimes carrying an egg sac or spiderlings.
Medically significantRedback spiderSmall black spider, usually female, with a red stripe or hourglass marking and a messy web in dry sheltered places.The necrosis myth
Healthdirect notes that current evidence suggests white-tail spider bites do not cause skin ulcers. If a wound is spreading, infected-looking or not healing, get medical advice instead of assuming the cause.
White-tail vs black house spider
Black house spiders sit in webs around windows, walls and fences. White-tailed spiders are wandering hunters and may appear while searching for other spiders.
What to do after a suspected bite
Move away from the spider, wash the bite area, use a wrapped cold pack for swelling or pain, and call 13 11 26 or a health professional if symptoms are severe, persistent or worrying.
More high-intent guides
Common spider identification questions
Red mark clueIs This a Redback Spider?Check redback spider clues in Australia, including red or orange markings, messy web position, body shape and common lookalikes.White-tail worryWhite-tail Spider Bite Myths AustraliaPlain-English Australian guide to white-tail spider bite myths, necrosis fears, symptoms, lookalikes and when to seek medical advice.
Big black spiderFunnel-web vs Trapdoor vs Mouse SpiderCompare funnel-web, trapdoor and mouse spider clues in Australia, including body shape, burrows, region and urgent bite safety advice.House spider clueBrown Spider in House AustraliaIdentify a brown spider in an Australian house by comparing size, web type, room, markings and common indoor spider lookalikes.Common questions
White-tail Spider Bite Myths Australia FAQ
Do white-tail spider bites cause necrosis?
Current Australian health guidance says evidence suggests white-tail spider bites do not cause skin ulcers or necrotising arachnidism.
What does a white-tail spider look like?
It is usually a grey to dark wandering spider with a pale mark near the end of the abdomen. Use the profile page to compare photos and clues.
Should I go to hospital for a white-tail bite?
Call 000 for severe allergic symptoms, breathing trouble or collapse. Otherwise seek medical advice for severe pain, worsening swelling, infection signs, symptoms that do not settle, or if you are worried.
Can a white-tail spider be found in beds or clothes?
They can wander indoors, including near clothing, bedding, bathrooms and walls. Check items carefully without handling the spider.
Reference notes
How this guide stays cautious
Spider Identifier Australia uses visible clues to suggest likely possibilities. It is not a medical diagnosis or a formal species determination.
- Australian Museum spider informationAustralian spider identification, biology and dangerous spider context.
- Australian Museum funnel-web spidersFunnel-web range, identification and bite-safety context.
- Poisons Information CentreCall 13 11 26 for poisons advice from anywhere in Australia.
- healthdirect spider bitesAustralian spider bite first aid, emergency signs and white-tail bite evidence.
- Australian Museum redback spiderRedback identification, web clues and Australian distribution.
- Australian Museum spiders in the house and gardenCommon Australian house and garden spider context.