5, see text Phoroidea The Platypezoidea are a superfamily of true flies of the section Aschiza.

Like these, the adults do not burst open their pupal cases with a ptilinum when hatching, thus the Aschiza do not have the inverted-U-shaped suture above the antennae.

They are, however, muscomorphs, thus have a particular type of pupal case resembling a rounded barrel and called puparium.

Five families are placed in the Platypezoidea, listed below in taxonomic sequence: The Ironomyiidae, Lonchopteridae, and Phoridae are sometimes separated as Phoroidea.

The reduced Platypezoidea thus created unites the two families of flat-footed flies.