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A synthesis of the Phaeogenini occurring in the Afrotropical region is provided. Three species are newly described: Centeterichneumon nambi Dal Pos, Diller & Di Giovanni sp. nov. from Uganda, Chauvinia ganota Claridge sp. nov. from Kenya, and Kibalus nonnaritae Dal Pos & Di Giovanni sp. nov. from Uganda. Heterischnus mfongosi Rousse & van Noort, 2013 is newly recorded for Kenya and Tanzania and the male of the species is diagnosed for the first time. Also, the female of Arearia oxymoron Rousse & van Noort, 2013 is diagnosed for the first time from one of the paratype localities. Lusius tenuissimus (Heinrich, 1938) and Chauvinia nyanga Rousse & van Noort, 2013 are recorded for the first time for Uganda and Kenya, respectively. In addition, new localities are given for Chauvinia nitida (Heinrich, 1938), Heterischnus olsoufieffi (Heinrich, 1938) and Hoplophaeogenes curticornis Heinrich, 1938. A new combination, Nesostenodontus mkomazi (Rousse & van Noort, 2013) comb. nov., is proposed to accommodate Heterischnus mkomazi. An updated key to the Afrotropical genera of Phaeogenini and keys to the Afrotropical species of the genera Arearia Seyrig, Centeterichneumon Heinrich, Chauvinia Heinrich, Heterischnus Heinrich, Hoplophaeogenes Heinrich, Kibalus Rousse, van Noort & Diller, and Lusius Tosquinet are provided. Updated online Lucid keys to genera and species are available from http://www.waspweb.org. 

We review the tribes of Cynipidae that are known to contain gall inducers on herbaceous plants, which are presently classified in four tribes: Aulacideini, Aylacini, Diastrophini, and Phanacidini. We provide a revised key to these tribes, diagnostic characters for each tribe, and an updated key to brachypterous and apterous Cynipoidea including the inclusion of brachyptery in Phanacidini. We propose the replacement name Eubothrus Förster, 1869 for the genus Isocolus Förster, 1869 (Aulacideini) as the latter is a homonym of the trilobite genus Isocolus Angelin, 1854 (Trilobita: Isocolidae). We also provide a checklist of world herb gall wasp species including host plant and geographic distribution data. Overall, we report 166 species of herb gall wasps, finding 96 species in 11 genera in Aulacideini, 6 species in 3 genera in Aylacini, and 39 species in 4 genera in Phanacidini, as well as 25 gall-inducing species in 3 genera in Diastrophini, of which 11 are or probably are associated with herbaceous plants. Online Lucid identification keys and images of all the taxa treated herein are available at: http://www.waspweb.org.