Summarized from Brake (2000)
The Milichiidae are a monophyletic family (Click here for phylogenetic tree).
Apomorphic characters for the Milichiidae are:
Classification: Aldrichiomyza; Borneomyia; Costalima; Desmometopa; Enigmilichia; Eusiphona; Leptometopa; Leptometopa niveipennis; Litometopa; Madiza; Madizinae; Microsimus; Milichia; Milichia distinctipennis; Milichia speciosa; Milichiella; Milichiella freyi; Milichiella nigeriae nigeriae; Milichiella populi; Milichiella sp. B; Milichiella sp. K; Milichiella tosi; Milichiinae; Neophyllomyza; Paramyia; Paramyioides; Pholeomyia; Pholeomyia nigricosta; Phyllomyza; Phyllomyzinae; Platophrymia; Stomosis; Ulia; Xenophyllomyza; Acartophthalmidae; Australimyzidae; Carnidae; Chloropidae; Milichiidae; Tethinidae