The Egg Parasitoid Wasp is a minute wasp smaller than a grain of sand that lays its own eggs inside the eggs of over 200 pest moth and butterfly species, killing the host egg before the caterpillar can hatch. It is mass-produced in biological control programs and used widely in agriculture to suppress bollworms, armyworms, and other lepidopteran pests. Multiple wasp eggs can develop inside a single host egg.
Not certain it is a Egg Parasitoid Wasp? What bug is this? walks through what to check first and the lookalikes that catch people out.
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