New data and taxa for Orthoptera Tettigoniidae and Acrididae from tropical Africa.

The results of a long-term study on the Orthoptera collected in tropical Africa and preserved in different European natural history museums are reported. Horatosphaga bazeletae n. sp. is described from South Africa, Dapanera falxcercata n. sp. from Cameroon, Eurycorypha specularia n. sp. from Zambia (Tettigoniidae Phaneropterinae), and Eucoptacra popovi n. sp. (Acrididae Coptacrinae) from the Gabon. Furthermore, the new genus Pigalua n. gen. is described for Eulioptera insularis Ragge, 1980 from Annobón Is. (Equatorial Guinea). The new tribe Kevaniellini n. trib. is proposed for Kevaniella bipunctata Chopard, 1954. Besides, the hitherto unknown males of Eurycorypha flavescens (Walker, 1869) and Eurycorypha klaptoczi Karny, 1917 fromWest Africa are described. In addition, new records or unknown taxonomical characters are reported for five species of Horatosphaga, Peronura clavigera Karsch, 1889, Prosphaga splendens Ragge, 1960, Kevaniella bipunctata Chopard, 1954, Eurycorypha prasinata Stål, 1874, Poreuomena lamottei Chopard, 1954, Tylopsis fissa Ragge, 1964, Catoptropteryx extensipes Karsch, 1896 and Mangomaloba latipennis Chopard, 1954 (Tettigoniidae Phaneropterinae).