Eumetabola is an unranked category of Neoptera. Two large unities known as the Paurometabola and Eumetabola are probably from the adelphotaxa of the Neoptera after exclusion of the Plecoptera. The monophyly of these unities appears to be weakly justified.
|Apis dorsata on Tribulus terrestris|
Eumetabola has the highest number of species of any clade. According to recent molecular phylogenetic analyses Eumetabola could have first appeared in Middle Devonian (391 million years ago) to the era of late Pennsylvania (311 million years ago). In addition to this, it would have also appeared in Hemiptera (310 million years ago).
|Wikispecies has information related to Eumetabola|