The Formicidae family member is an ANT, which is a three-letter word. Ants are social insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants form colonies that range in size from a few dozen predatory individuals living in small natural cavities to highly organized colonies that may occupy large territories and consist of millions of individuals. Ants have colonized almost every landmass on Earth.