The Cercopidae are divided into two subfamilies, Cercopinae and Tomaspidinae, which differ from the concepts to which these names have hitherto been applied, and now include Old World and New World genera, respectively. The former Aphrophorid subfamily Neaeninae is reconstituted as a tripe of Cercopidae, and the tripe Funkhouseriini is suppressed under Tomaspidini. The genera of Tomaspidinae are keyed. and eight, Iphirhina, Aracamunia, Ocoaxo, catrimania, Urubaxia, Tunaima, Tapaiuna and Zuata, together with two subgenera, Zulia (Notozulia) and Mahanarva (Ipiranga), are described as new. One hundred and thirty-six specific names are recombined. Eight names are suppressed in synonymy, and notes are given on the genera in which these changes are made.