Fire ants

Fire ants infest around 600,000 ha in South East Queensland in Greater Brisbane and Toowoomba regions, and Northern NSW in the Northern Rivers. Fire ants are one of the world’s worst invasive species, with the ability to severely impact our environment, economy, agricultural industries, health, and our Australian way of life.

Free 15-20 minute online training is available at: the National Fire Ant Eradication Program. This website also include materials and resources to help you prepare and raise awareness.

Fire Ants (Solenopsis invicta) are fast moving, aggressive ants with a severe burning sting. Because they attack in swarms, they can cause multiple bites in one event, creating the sensation of being on fire. They are harmful to people, livestock and wildlife and consequently impact recreational and agricultural activities.

Fire ants have 4 characteristics that together set them apart from other ants you might find:

Various sizes of fire ants.

  • they are 2–6 mm long

  • they are found in a variety of sizes within one nest

  • they are dark reddish-brown in colour

  • they have darker brown-black abdomens

  • they are aggressive - hundreds of ants will come out of a nest if disturbed, trying to sting over and over.

With magnification, you can see that their waist section has two segments.

Find out more about Fire Ants.

Red Fire Ants Fact Sheet by the Invasive Species Council

The last 12 months of reported fire ant locations

Fire ant size in comparison to a 10c coin.

Summary of Fire Ants in Queensland, by Pieter van Jaarsveld the President of the Traprock Association