1. Argentine Ant (Linepithema humile)
Originally from South America, this species has established itself in various parts of Australia. Argentine ants are tiny, measuring about 2.2 to 2.8 mm in length. They are light to dark brown and are known for their aggressive behaviour towards other ant species. They can quickly form large colonies, making them difficult to control.
2. Coastal Brown Ant (Pheidole megacephala)
This ant species is commonly found in urban areas, especially around food sources. Coastal brown ants have a distinct two-tone appearance, with the more prominent workers featuring a notably big head. These ants invade homes in search of food, particularly sugary substances.
3. Green Tree Ant (Oecophylla smaragdina)
Green tree ants, recognised by their bright green bodies, build their nests in trees using leaves. They are known for their aggressive behaviour and painful bites. Green tree ants are beneficial for controlling garden pests, but they can become a nuisance if they invade homes.
4. Black House Ant (Ocyphus longipes)
As the name suggests, black house ants are often found in homes and are attracted to food sources. They are small, typically 2.5 to 15 mm long, and are shiny black. These ants create trails between their nests and food sources, which can lead to infestations.
5. Bull Ant (Myrmecia spp.)
Known for their large size and painful sting, bull ants are native to Australia and can be pretty intimidating. They are typically found in wooded areas and can be aggressive if their nest is disturbed. Their keen eyesight allows them to hunt for food effectively.
