Correct option is A
The correct answer is: (A) Bollworm of cotton
Explanation:
Trichogramma chilonis is an egg parasitoid wasp widely used in biological control programs. It parasitizes the eggs of various lepidopteran pests, including bollworms, which are major pests in cotton.
By laying its eggs inside the eggs of bollworms, the parasitoid prevents them from developing, effectively controlling the pest population.
Information Booster:
Trichogramma chilonis is a tiny wasp (~0.3 mm) that attacks over 200 species of moth pests.
It is most effective against Helicoverpa armigera and Earias spp., which are serious bollworms in cotton.
It is mass-reared and released in fields as part of Integrated Pest Management (IPM) strategies.
Knowledge Booster:
Whitefly – These are sap-sucking pests, and Encarsia formosa is commonly used for their biological control.
Aphid – These pests are also controlled by predators like ladybird beetles (Coccinellids) and parasitoids like Aphidius spp.
Thrips – These are controlled biologically using predatory mites (like Amblyseius spp.).
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