Figures 1-35 Figs 1–4. Female spermathecal ducts. 1, 2. In Orthochtha-Euprepoptera-Lobopoma genus group (after Popov and Fishpool 1992): 1. Spermathecal duct in situ in relation to ovipositor valves; 2. Spermathecal duct isolated (s, sd, PL); 3. As Fig. 2, but in Duronia genus group. 4. Female genital ducts of the Oedipodinae, represented by Aiolopusthalassinusthalassinus (Fabr.) (after Hollis 1968). Abbreviations applying to Figs 1–4: PL – proximal loop of spermathecal duct, characteristic of most Acridinae, to contrast with its absence in Fig. 4, which is characteristic of Oedipodinae; Sd – spermathecal duct; Sa – spermathecal aperture; S – spermatheca; Ad, Pd – apical and preapical diverticula of spermatheca. Figs 5–39. Male epiphalli representing tribes and genus-groups of the Acridinaes. str. (after Dirsh 1956). Figs 5–7. Tribe Truxalini: 5.Truxalisnasutus (L.,1758); 6. Chromotruxaliscockerelli (Uvarov, 1932); 7.Truxaloidesserratus (Thunberg, 1815). Fig. 8. Tribe Acridini: Acridaturrita (L.,1758). Figs 9–23. Tribe Phlaeobini: Figs 9–12.Orthochtha-Euprepoptera-Lobopoma genus group: 9.O.venosa (Ramme, 1929); 10.O.g.dasycnemis (Gerstaecker, 1869); 11.Euprepopterapolychroma Uvarov, 1953; 12.Lobopomaambages Karsch, 1896. Figs 13–15.Cannula-Glyphoclonus-Culmulus genus group: 13.Cannulalinearis (Saussure, 1861); 14.Glyphoclonusmiripennis Karsch, 1896; 15.Culmulusstramineus Uvarov, 1953. Figs 16–18.Afrophlaeobagenusgroup: 16.Paralobopomagracilis (Ramme, 1929); 17.Afrophlaeobausambarica (Ramme, 1929); 18.Chokweaburri Uvarov, 1953. Figs 19, 20.Duronia genus group: 19.Duroniachloronota (Stål, 1876); 20.Duroniellalaticornis (Krauss, 1909). Figs 21, 22.Sumba-Rhabdoplea-Panzia genus group: 21.Rhabdopleamunda Karsch, 1893; 22.Sumbaroseipennis I. Bolívar, 1912. Fig. 23.Ocnocerus-Anacteana genus group: 23.Ocnocerusdiabolicus Karsch, 1893. Figs 24–30. Tribe Gymnobothrini: 24.Zacompsafesta Karsch, 1893; 25.Coryphosimastenoptera (Schaum, 1853); 26.Chiristacompta (Walker, 1870); 27.Comacrissemicarinatus (Gerstaecker, 1869); 28.Gymnobothruspullus (Karny, 1915); 29.Gymnobothruslineaalba I. Bolívar, 1889; 30.Malcolmburriaangolensis Uvarov, 1953. Figs 31–34. Tribe Pargaini: 31.Acteanaalazonica Karsch, 1896; 32.Odontomelusscalatus (Karsch, 1896); 33.Machaeridiabilineata Stål, 1873; 34.Pargacyanoptera Uvarov, 1926. Fig. 35. Unclassified genera: 35.Xerophlaeobadeserticola (Krauss). All scale-lines represent 1 mm: that under Fig. 1 applies to Figs 1 and 2; that under Fig. 3 applies to Fig. 3; that under Fig. 4 applies to Fig. 4; that under Fig. 12 applies to Figs 5–39.