THE ACROMETOPAE OF THE ETHIOPIAN REGION: A REVISION, WITH NOTES ON THE SEXUAL DIMORPHISM SHOWN BY THE GROUP (ORTHOPTERA : TETTIGONIIDAE) By D. R. RAGGE CONTENTS Page INTRODUCTION ........... 269 ACKNOWLEDGMENTS . . . . . . . . . 273 MATERIAL ........... 274 TREATMENT ........... 274 SEXUAL DIMORPHISM .......... 274 KEY TO THE GENERA .......... 276 Horatosphaga Schaum . . . . . . . . . .278 Peronura Karsch ........... 320 Prosphaga gen. n. .......... 322 Conchotopoda Karsch .......... 3 2 5 Lamecosoma gen. n. . . . . . . . . . 33 1 REFERENCES ........... 333 SYNOPSIS The African genera of the Phaneropterine group Acrometopae are fully revised. The names for these genera are reduced in number by new synonymy from fourteen to three, and in addition two new genera are described. Keys are given to the genera and species. It is shown that the two sexes of several of the species have hitherto been placed in different genera and in many cases in different species. Fourteen specific names have been newly synonymized and nine new-species are described. INTRODUCTION THIS revision covers all the species of Phaneropterinae which have been described or included in Horatosphaga Schaum, Conchotopoda Karsch, Peronura Karsch, Plegmatoptera Karsch, Pantolepta Karsch, Rhegmatopoda Brunner, Pachypyga Karsch, Euthyphlebia Schulthess, Thaiimatoxenia Kirby, Keniacola Sjostedt, Schulthessinia Sjostedt, Pachypygiana Strand, Eupantolepta Bolivar, and Plegmatia Uvarov. Of these generic names, all but the first three are newly synomymized : Rhegmatopoda Brunner with Conchotopoda Karsch, and the remaining ten with Horatosphaga Schaum. The group-name Acrometopae is used here in the sense in which it was used by Brunner (1891, p. 5). It is not pretended that it is a satisfactory taxonomic unit, but it has nevertheless a use of convenience for a group of Phaneropterinae which
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