Note: A few ant species, such as the Western thatching ant, bite and then spray a chemical called formic acid into the wound, which can cause the skin to blister ... The dreaded fire ant is ...

Within a day, the sting will develop into a pustule or small blister, and it may itch, become swollen or cause discomfort, from mild to severe. A fire ant hill is a structure that’s built by ...

The invasive pest has already colonised the United States – now recent flooding is raising fears it will do the same in Australia.