Do wasp eat aphids?
The average wasp does not feed on aphids as they are too small but the parasitic wasp will lay an egg in the abdomen of the aphid, which kills it and as the larva grows it feeds off the dead aphid.
Of course they can. Most animals, regardless of what they are, have the capacity to eat just about anything that they can put in to their mouth. ANSWER: They would not intentionally look to eat aphids, since aphids are tiny pests that suck the juices out of plants and flower buds, but they could accidentally eat them when they eat plants that aphids may be on.