Aphidius ervi is a parasitic wasp. After detecting the pest the parasite lays its eggs directly in the body of a prey (aphid). After the laying of the egg in the pest body a larva emerges. It begins to feed on the inner contents of a host body. The exterior of the aphid becomes golden-brown and the prey is transformed into a mummy. It is applied against the aphids for protection of vegetables (the cucumber, the eggplant, the pepper), berries (strawberry, raspberry, blueberry) and the decorative plants. It is active at 30˚C temperature conditions.