Key to tribes of Membracinae (including Oropedium gen. nov. in incertae sedis)

1. Forewing vein R initially divided into R 1 and Rs (Fig. 5H, 5J, 6A, 6C)........................................... 2

1’. Forewing vein R initially divided into R 1+2+3 and R 4+5 (Fig. 3C, 5G, 5I, 6B)....................................... 3

2 (1). Pronotum with latero-apical carinae (Fig. 5J); metathoracic tibia club-shaped, dilated apically; metathoracic tarsus shorter than pro- and mesothoracic tarsi...................................................................... Talipedini

2’. Pronotum lacking latero-apical carinae (Fig. 5H); metathoracic tibia with anterolateral and posterolateral margins subparallel or slightly dilated apically (except clavate in Havilandia Dietrich and McKamey); pro-, meso- and metathoracic tarsi subequal in length................................................................................... Membracini

3 (1’). Metathoracic tibia clavate, metathoracic tarsus distinctly shorter than pro- and mesothoracic tarsi (Fig. 6B)..................................................................................................... Hoplophorionini

3’. Metathoracic tibia not clavate (Fig. 3C), or, if slightly expanded apically, then tarsus subequal in length to that of prothoracic leg................................................................................................. 4

4 (3’). Forewing with apical limbus extended over clavus (Fig. 5I); lateral margins of pronotum covering portions of apical limbus and veins of forewing (except Cladonota); abdominal terga coarsely pitted (Fig. 6E) (although finer in Cladonota; Fig. 6F).............................................................................................. Hypsoprorini

4’. Forewing with apical limbus not extended over clavus (Fig. 5G); lateral margins of pronotum covering at most part of apical limbus of forewing; abdominal terga finely punctuated (Fig. 4C)............................................... 5

5 (4’). Pronotum usually with anterior process, metopidium forming an acute angle with dorsal outline, pronotum without lateral carinae (Fig. 5G)............................................................................ Aconophorini

5’. Pronotum plateau-shaped, lacking anterior process, metopidium forming an angle of 90º with dorsal outline, lateral carina extended from above metopidium almost to humeral angles (Fig. 3B–C)............................................................................................. Oropedium tatamaense sp. nov. [ Membracinae incertae sedis]