The true katydid subfamily Pseudophyllinae contains numerous species of Tettigoniidae (katydids or bush crickets). Like the other crickets of suborder Ensifera, it is part of the insect order Orthoptera which also contains e.g. grasshoppers and locusts.
Due to the massive diversity of this subfamily, it is not unequivocally delimited versus its relatives yet. Some additional genera, such as Phricta of the Mecopodinae, are sometimes placed here.
The Pseudophyllinae are commonly subdivided into 19 tribes as well as numerous genera of unclear relations. Some notable genera and species are also listed: