In the studied years the cultivated crop had a greater influence on the number of cereal aphids, more often pests prevailed in the agrocenosis of oats compared to wheat. In conditions of drought aphids were more abundant on wheat. Clear influence of сultivated crop culture, the level of chemicalization on the adult Aphidiinae was not noted, more often they preferred crops with traditional cultivation technology. The number of adult Aphelinidae in both cultivation technologies and different levels of chemicalization in 2011 and 2013 was higher in the agrocenosis of oats compared with the agrocenosis of wheat, i.e. where the number of aphids was higher. Also on oats marked increase in the abundance of Aphelinidaе at complex application of fertilizers and pesticides. In control variants the number of Aphelinidaе in both years was higher when oat was cultivated using No-till technology, in the intensive variants this difference disappeared. In the conditions of drought the number of imago parasitic Hymenoptera remained insignificant, so the influence of all studied factors on their abundance was not noted.