Fire ants have a dedicated venom-injecting sting

Fire ants have a dedicated venom-injecting sting
Fire ant is the common name for several species of ants in the genus Solenopsis. They are however only a minority in the genus, which includes over 286 species of Solenopsis worldwide. Solenopsis are stinging ants and most of their common names reflect this, for example, ginger ants and tropical fire ants. Many species also are called red ants because of their light brown colour, though species of ants in many other genera are similarly named for similar reasons. Examples include Myrmica rubra and Pogonomyrmex barbatus.




A typical fire ant colony produces large mounds in open areas, and feeds mostly on young plants,seeds and sometimes crickets. Fire ants often attack small animals and can kill them. Unlike many other ants, which bite and then spray acid on the wound, fire ants bite only to get a grip and then sting (from the abdomen) and inject a toxic alkaloid venom called Solenopsin, a compound from the class of piperidines. For humans, this is a painful sting, a sensation similar to what one feels when burned by fire (hence the name) and the after effects of the sting can be deadly to sensitive people. The liquid is both insecticidal and antibiotic.

Fire ants are more aggressive than most native species and so have pushed many species away from their local habitat. These ants are renowned for their ability to survive extreme conditions. They do not hibernate, but can survive cold conditions as low as -9 °C (16° F) despite originating from South America.

The venom of fire ants is composed of alkaloids derived from piperidine. Some people are allergic to the venom, and as with many allergies, may experience anaphylaxis, which requires emergency treatment. Other problems are concentrated to the site of the sting.

The sting swells into a bump, which can cause much pain and irritation, especially when several stings are in the same place. The bump often forms into a white pustule, which can become infected if scratched, but if left alone will usually flatten within a few days. The pustules are obtrusive and uncomfortable while active and, if they become infected, can cause scarring…. Source

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