Оса менша за міліметр — і допомагає захищати врожай | A wasp smaller than a millimetre can protect crops

Trichogramma are tiny parasitoid wasps reared for biological pest control: they lay their eggs inside the eggs of other insects. Adults are often about 0.5–1 millimetre long. But calling them the smallest flying insects is inaccurate: even smaller wasps, including species in the genus Megaphragma, are about 0.2 millimetre long.