More than 7700 greenbug (Schizaphis graminum) and nearly 2200 corn leaf aphid (Rhopalosiphum maidis) mummies were collected from sorghum grown in the 6 vegetational regions of Texas. Adult parasites emerged from 5635 of the collected greenbug mummies and 1468 of the collected corn leaf aphid mummies. Of the mummies producing adult parasites, 4040 resulted in three species of hymenopterous primary parasites, Lysiphlebus testaceipes (Cresson) and Diaeretiella rapae (M'Intosh) (Braconidae), and Aphelinus varipes (Foerster) (= A. nigritus Howard) (Aphelinidae). The remaining 3064 emerged adults represented 5 spp. of hymenopterous hyperparasites. Pachyneuron siphonophorage (Ashmead) and Asaphes lucens (Provancher) (Pteromalidae), Alloxysta sp. (megourae complex) (Cynipidae), Aphidencyrtus aphidivorus (Mayr) (Encyrtidae), and Tetrastichus minutus (Howard) (Eulophidae). About 43% of the 7103 aphid mummies produced hyperparasite species, or apprx 45% of the greenbug mummies and 35% of the corn leaf aphid mummies. Alloxysta sp. was always most common from L. testaceipes-produced mummies, and A. aphidivorus was usually most common from A. varipes-produced mummies. P. siphonophorae was nearly always the most common hyperparasite regardless of region or host aphid, Alloxysta sp. was usually 2nd most common, and A. aphidivorus third most common. The survey did not recover any of the 6 spp. of exotic greenbug parasites previously imported from Europe and released in Texas or Oklahoma. These exotic parasite species are either not established or not yet exerting a significant influence on the greenbug.