Key to the North American tribes and genera of herb, rose, bramble, and inquiline gall wasps (Hymenoptera, Cynipoidea, Cynipidae sensu lato)

21 Synergus atripennis, dorsolateral view (USNMENT01231845) 22 Synergus sp., metasoma, lateral view (USNMENT01231858) 23 Synergus sp., lateral view (PSUC_FEM 000079457) 24 Synophromorpha sp., dorsolateral view (USNMENT01448499) 25 Ceroptres sp., metasoma, dorsolateral view (USNMENT00917016) 26 Diastrophus kincaidii, lateral view (PSUC_FEM 000251280). Abbreviations: ppt = pronotal plate, T2 = second metasomal tergite, T2+3 = completely fused second and third metasomal tergites, T3 = third metasomal tergite.