Identification
In Scatopsoidea, the posterior margin of the katepisternum is displaced to a more posterior disposition, causing the pleural suture to be folded. The superfamily also has a well-developed sperm pump and associated apodemes.Phylogeny
Based on morphological features, Scatopsidae and Canthyloscelidae are Sister group, sister groups to each other, and Valeseguyidae is the sister group to them. An analysis of Nuclear DNA, nuclear and Mitochondrial DNA, mitochondrial gene markers supported the monophyly of Scatopsoidea. It also found that this superfamily is the sister group to Bibionomorpha.References
Psychodomorpha Diptera superfamilies {{Psychodomorpha-stub