Eumetabola

Eumetabola is an unranked clade of Neoptera. Two large unities known as the Eumetabola and Paurometabola are probably from the adelphotaxa of the Neoptera after exclusion of the Plecoptera. The monophyly of these unities appears to be weakly justified.

According to a phylogenetic analysis, the Eumetabola clade originated 390–350 million years ago, in the Late Devonian.

Phylogeny
The phylogeny of Eumetabola is shown in the cladogram, using the molecular phylogeny of Wipfler et al. 2019 for the Polyneoptera, Johnson et al 2018 for the Paraneoptera (where Psocomorpha contains Phthiraptera), and Kjer et al 2016 for the Holometabola.