Abstract: Such production unit comprises namely an incubator (1) with ventilated housing comprising horizontal alveoli elements, a hatchery (2) containing said alveoli elements arranged vertically and provided with an inlet of carbonic acid gas, a laying place (5) comprising an arrangement of vertical thin plates at right angles with an outlet hopper towards a collecting member (6) and pneumatic transport conduits (7,8). Application to the production of eggs of the meal pyralis genus, intended to be used as substitution host particularly for trichogrammidae.

Abstract: Process for conditioning and preservation of eggs of oophagous parasites of insects, intended particularly to the biological combat against certain depredators of plants. According to this process, starting initially with eggs of lepidoptera of foodstuffs, particularly Iphestia Kuhniella, which have been previously conditioned, these eggs are then parasited by adults of Trichogrammidae, the parasited eggs are submitted to an incubation period, the incubated eggs are submitted to an induction period, and then the eggs thus obtained are cold-preserved. Application particularly to the biological combat against the pyralis of the Ostrinia nubilalis hubner corn.