White-tailed Spider (Lampona spp.) | WildGuardian Australia

WildGuardian database profile: [ID 12: White-Tailed Spider](/wildlife/white-tailed-spider)

In Australia, “white-tailed spider” is a common name used for spiders in the genus Lampona, family Lamponidae. This page deliberately uses *_Lampona spp._ rather than the database wording “Lampona species”: spp. is the scientific shorthand for multiple species in a genus. It avoids implying that every sighting is one species. The Australian Museum identifies Lampona cylindrata and L. murina as the two common species in southern Australia, while the Australian Faunal Directory lists L. cylindrata among Lampona* species commonly called white-tailed spiders. [1] [5]

The pale mark at the rear of the abdomen is memorable, but it is not a medical diagnosis or a reason to assume a severe outcome. White-tailed spiders are not considered dangerous to humans by Healthdirect Australia. A bite can still be painful and irritating, so a calm, proportionate response matters. [2]

Identification limits

A white-tailed spider is typically described as dark reddish-grey to grey, with a cigar-shaped body and dark orange-brown banded legs. The abdomen can show two pairs of faint white spots and a white spot at the tip; those marks may be less obvious in adults. The Australian Museum lists males at 12 mm and females at 18 mm. [1]

Those features are useful for a cautious, non-contact observation, not a definitive species-level identification. The two common southern species, L. cylindrata and L. murina, are similar in appearance and overlap in south-eastern Australia. The University of Melbourne also notes the characteristic cylindrical body and white or grey abdominal tip. [1] [3]

This is why the page stays at genus level. A white-tipped abdomen alone does not establish which Lampona species is present, and it should not be used to diagnose the cause of a skin problem. In the clinical study of verified bites, spiders were identified by an expert; the authors stressed that misidentification is common without that chain of evidence. [4]

Australian range and habitat

The white-tailed spider group is broadly reported from most areas of Australia, including urban dwellings. The ranges of the two commonly encountered species should not be merged into one precise map: L. cylindrata is recorded across southern Australia, including south-east Queensland, New South Wales, Victoria, South Australia, Tasmania and Western Australia. L. murina is recorded in eastern Australia from north-east Queensland to Victoria. [1] [3]

They are vagrant hunters rather than spiders identified by a conspicuous prey-catching web. The Australian Museum records them beneath bark and rocks, in leaf litter, logs and detritus, and in bushland, gardens and houses. They can also use sheltered spaces around homes. [1]

A spider found indoors is therefore not evidence of an unusual invasion or a particular medical risk. The Australian Museum notes that white-tailed spiders are often seen in and around houses in summer and autumn, where sheltered crevices and spider prey are available. [1]

Behaviour and ecology

White-tailed spiders actively search for prey, especially other spiders. The Australian Museum describes them as most active at night, wandering to hunt, and records other spiders as their preferred food. The University of Melbourne likewise describes them as active hunters that may roam in houses, especially in warmer weather. [1] [3]

They are associated with narrow, sheltered spaces. In a prospective Australian study of 130 definite Lampona bites, 95% occurred indoors and many encounters involved bedclothes, towels or clothing. The study recorded most bites from September to April and 75% between 4 pm and 8 am. These figures describe the verified bites in that study; they are not a prediction that every indoor sighting will lead to a bite. [4]

The Australian Museum reports temporary silk retreats and disc-shaped egg sacs, but the practical point is simple: this is a mobile hunting spider. Its presence can be linked to nearby shelter and prey, not a large trapping web. [1]

Safer encounters at home and outdoors

The safest approach is to avoid touching spiders. Healthdirect specifically advises leaving spiders alone and teaching children not to touch them. [2]

• Before putting them on, check shoes and items such as clothing that have been left on the floor; verified Lampona bite encounters have often involved clothing, towels or bedclothes. [2] [4]
• Wear gloves when gardening. This is general Australian spider-bite prevention advice from Healthdirect. [2]
• Do not rely on a pale tail marking to decide whether a spider is harmless, or to identify a bite. Species-level identification can be difficult even among white-tailed spiders. [1] [4]

These are avoidance measures, not instructions to handle, capture or move a spider. Keeping hands away from an unfamiliar spider removes the need to make a rapid visual identification.

Injury and medical response

For white-tailed spiders, the best-supported message is reassuring but not dismissive. Healthdirect says a bite can cause initial burning pain, swelling and blisters, while current evidence suggests white-tail bites do not cause skin ulcers, also called necrotising arachnidism. [2]

That conclusion aligns with the prospective study of 130 definite bites by L. cylindrata and L. murina. All participants reported pain or discomfort, and some had redness or itchiness, but the study found no necrotic ulcers and no confirmed infections. The authors concluded that white-tail bites are very unlikely to cause necrotic ulcers and that other diagnoses should be considered for such lesions. [4]

For a suspected white-tail or other non-big-black spider bite:

1. Wash the area with soap and water. [2]
2. Apply antiseptic cream if available, and use a cold pack wrapped in a clean cloth to reduce pain and swelling. Do not put ice directly on skin. [2]
3. See a doctor if pain is severe, the bite does not settle within a few hours, or swelling or itch worsens after 24 to 48 hours. [2]

Do not use a pressure-immobilisation bandage for a suspected white-tail bite; Healthdirect limits that technique to funnel-web or mouse-spider bites. Seek urgent help by calling 000 if there are signs of anaphylaxis, such as difficult or noisy breathing, swelling of the tongue or throat, persistent cough, dizziness or collapse. [2]

Frequently asked questions

Is “white-tailed spider” one species?

Not for this profile. The name covers Lampona spiders, and the Australian Museum identifies L. cylindrata and L. murina as two common southern Australian species. Using Lampona spp. keeps the database profile accurate without asserting a sighting belongs to one of them. [1] [5]

Where in Australia might I see one?

White-tailed spiders are reported from most of Australia, including cities and homes. More specifically, L. cylindrata is recorded across southern Australia, while L. murina is recorded from north-east Queensland through eastern Australia to Victoria. [1] [3]

Does the white or grey mark prove the identification?

No. The mark is a useful feature, but adults may have less distinct spots, and the two common species have similar appearances and overlapping distributions. Treat an identification from appearance as tentative. [1]

Do white-tailed spider bites cause flesh-eating ulcers?

Current Australian health guidance says the evidence suggests they do not cause skin ulcers. A study of 130 expert-confirmed bites found no necrotic ulcers. A painful red mark, itchiness, swelling or a blister can still occur, so monitor the bite and seek medical care if symptoms worsen. [2] [4]

Should I use a pressure bandage after a suspected bite?

Not for a suspected white-tail bite. Healthdirect reserves pressure immobilisation for funnel-web or mouse-spider bites. Follow the ordinary-bite steps above and seek professional advice if symptoms are concerning. [2]

References

1. [1] White-tailed Spider — Australian Museum
2. [2] Spider bites — Healthdirect Australia
3. [3] White tailed Spiders — University of Melbourne AVRU
4. [4] White-tail spider bite: prospective study of 130 definite bites by Lampona species
5. [5] Family Lamponidae — Australian Faunal Directory