Abstract
Trichogramma spp. are important biological control agents for lepidopterous pests. Insectaries for mass rearing them, using factitious hosts, have been constructed in many countries. Selection of factitious hosts is based on the simplicity of their mass production, mechanization of rearing processes, and cost of production compared to that of utilizing target pest eggs. Scientific literature and personal experiences with the techniques used for production of factitious hosts for Trichogramma spp. in the former Soviet Union, the United States, Western Europe, and China are presented.
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