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Trichogramma

Trichogramma is a genus of tiny egg parasitoid wasps belonging to the family Trichogrammatidae. These are among the most widely used biological control agents in agriculture. They specifically parasitize the eggs of lepidopteran pests like Helicoverpa, Spodoptera, Plutella, Opisina arenosella, Chilo, and Earias. The female lays its egg inside the pest egg, preventing the pest larva from hatching. Parasitized eggs turn black or dark brown, which is a clear field indicator. Trichogramma species are micro-wasps (less than 1 mm) and are harmless to humans, animals, and crops. Common species: ✅ Trichogramma chilonis ✅ Trichogramma japonicum ✅ Trichogramma pretiosum 👉 Use in IPM: Mass-released using Tricho-cards at 7–10 day intervals to prevent pest buildup at egg stage, making it a highly effective preventive biological control method.