Fairy flies"Fairy flies" are some of the smallest insects in the world.
- There are about 160 species in New Zealand, about 10% of the world's known species.
- Fairy flies are not true flies (Diptera) but actually tiny mymarid wasps (Hymenoptera), which lay their eggs in the eggs of other insects.
- All the young stages of the mymarid develop within the host egg, and hatch as adults from the host eggs.
- Some fairy flies are less than 0.4 mm long.