Question about wasp diets.?

Question

What do wasps feed on?

Answer 1

Generally wasps are parasites as larvae, and feed only on nectar as adults. Some wasps are omnivorous but this is relatively uncommon, they feed on a variety of fallen fruit, nectar and carrion. Many wasps are predatory, preying on other insects. Certain social wasp species, such as yellowjackets, scavenge for dead insects to provide for their young. In turn the brood provides sweet secretions for the adults.

In parasitic species the first meals are almost always provided from the animal the adult wasp used as a host for its young. Adult male wasps sometimes visit flowers to obtain nectar to feed on in much the same manner as honey bees. Occasionally, some species, such as yellowjackets, invade honeybee nests and steal honey and/or brood.

Answer 2

I know that Bald Faced Hornets eat flies of all kinds.
Steel Blue Cricket Hunter larvae are attached to Tomato Horn worm Caterpillars.
There is a kind of wasp in the desert, the female lays eggs on a tarantula and the larvae feed off the tarantula until they hatch.

Answer 3

There are hundreds if not thousands of species of wasps. Some are generalist omnivores while others have very specific diets.

Unless you indicate a particular species of interest a complete answer to your question would be tediously long to write out.