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Redback spider

Small, shiny black, and fond of dry corners outside.

A redback is a small, shiny black spider; the female has a red or orange stripe on her back, and she lives in dry, sheltered spots outside the house.

A female redback spider with its red stripe
A female redback spider (Latrodectus hasselti).

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A female redback spider with its red stripe
A female redback spider (Latrodectus hasselti).

Updated 3 November 2026 · Written by the Which Pest team · How we check our facts

If someone is bitten

If they're very unwell, have trouble breathing or collapse, call 000. For first aid advice, call the Poisons Information Centre on 13 11 26, any time: redback first aid is different from a funnel-web bite, so ask rather than guess.

How to tell it's a redback

The female is the one people notice: a round, glossy black body about the size of a pea, with a red or orange stripe along the top and often an hourglass mark underneath. Males are much smaller and brown, and rarely seen.

The web is a messy tangle rather than a neat orb, usually with sticky lines running down to the ground. Look in letterboxes, under outdoor furniture, in stacked pots, along fence rails and under the rims of bins.

When they're about

Redbacks are found right across Australia. The Australian Museum says they're less common in winter, and bites happen most often over the summer months, when people are outside, gardening and moving things that have sat still for a while.

Around the house

You can

  • Wear gloves when you move pots, timber or anything stacked outside.
  • Shake out shoes and gardening gloves left outdoors.
  • Clear clutter from under decks and around the shed.
  • Check under outdoor chairs and play equipment before children use them.

Leave to a pest business

  • A general outdoor treatment if you're finding redbacks often.
  • Spiders in places you can't safely reach, like under a deck or in the roof space.

Our take on the redback spider

One redback under the outdoor setting is common and not a reason for a treatment; tidy up its hiding spots. If you keep finding them around play areas, a general outdoor treatment is worth asking about: tap Spiders or ants.

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Questions

Redback spider: common questions

Are redbacks dangerous?

A bite can be very painful and some people become unwell, so take it seriously. Call 000 if someone is very unwell, and the Poisons Information Centre on 13 11 26 for first aid advice.

Do redbacks come inside?

Not often. They prefer dry, sheltered spots outdoors, such as sheds, letterboxes and under furniture.

Is a black spider with no red stripe a redback?

Not necessarily. Black house spiders are common on window frames and have no stripe. Our pest identification pages has both.

Where this information comes from

Rules and advice change, so check the source before you act on anything here. How we write and check these pages.

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