Fire ants bite and sting with a venom called solenopsin ... have evolved to grow spikes or spines from their exoskeletons. (How these ants help find fossils.) One Amazon species (Allomerus ...

Another way to keep fire ants away from you and your home is with the use of diatomaceous earth. Diatomaceous earth is a fossilized algae powder that destroys many insects' exoskeletons ...

They can be recognised by their shiny green and purple exoskeleton. Green-head ants ... and create an intense, sticky ache. Fire ants (or red imported fire ants) are originally from South America.