What is the smallest creature that flies?
The parasitic wasp is the smallest flying creature in the world with a length of approximately 0.1mm-0.17mm and a weight of only 0.000025 grams. It typically serves as a biological crop protector by killing the eggs from which harmful caterpillars grow. The wasp is technically a parasitoid because while parasites live off the expense of their host without actually killing it, parasitoids almost always kill their host. It is known that these insects are "hitchhikers" and often ride on the faces of butterflies and larger insects to travel.