FloridaEnto and Polly-themus both knew the answer to this one. Most insects have 4 wings. Beetles have thick, armor-like front wings that protect their bodies. To fly they move these out of the way exposing their thin and flexible hind wings. At rest, you cannot see the hind wings because they are under the forewings.
Some ants do have wings, but there two more body features only ants have.
Worker wasps have wings, worker ants don't have wings. Also the ant has a raised hump connecting the thorax to the abdomen. Ants also have a bend in their antennae. The size of their eyes is true in most cases, but their are exceptions. Some ants have one and others have two, but bees and wasps will always have none.