A male ant is pretty much a very streamlined sperm delivery device. They hatch from unfertilized (haploid) eggs, they have big muscular backs for wing muscles, and tiny heads because they don’t need much in the way of brains. Prior to their one and only flight they also void their gut...
Aculeata, from Latinaculeus, sting, needle. The evolutionary modification of the ovipositor (egg-layer) into a stinger (and venom-delivery system in some species) unites this taxon. Not all aculeates can sting, and some aculeates have ovipositors instead of stingers. Go figure. All social bee...