The anterior sensory structures (amphids) are well developed, while the posterior ones (phasmids) are not.
Traditionally, the Enoplea were treated as a subclass Enoplia in the "Adenophorea" assemblage, alongside the Chromadorea. With the dismantling of this artificial group, the two subclasses were upranked to classes of their own. As it appears, the Enoplea contain two distinct lineages, as has long been suspected. These have been reinstated as subclasses Dorylaimia and Enoplia. But it may well be that they are just as distant from each other as from the Chromadorea, necessitating a further split of the group.
