Four-spotted Aphid Flies

The Four-spotted Aphid Fly is the only species in the genus Dioprosopa in North America. This fly takes nectar from flowers and lays its eggs singly on vegetation near aphid colonies. This strategy gives the hatching larva an opportunity to find food immediately and begin feeding on aphids. This fly is an important biological agent controlling Brown Citrus Aphid in citrus growing areas of the US and Puerto Rico.