The Aphid Midge are tiny black flies, only about 1/8 of an inch long. The average life span for these creatures is about ten days. These little bugs feed on aphid honeydew, and are nocturnal. Females lay 100-250 shiny orange eggs. Then, 2-3 days later, they hatch. After 3-7 days, the larvae drop on to the ground and burrow under the soil. The Aphid Midge does this so they can pupate.
If you have a garden, it is beneficial to have the Aphid Midge lurking around. They help fight off aphids that will eventually suck the life out of your plants.