Photo by Drees.
Adults are small and very hairy, with a pair of pointed wings.
They resemble small moths because they hold their wings roof-like over the body when at rest. They are weak fliers and appear to hop or jump. Following a feeding period, larvae pupate and soon emerge as adult flies. Adults live only 3 to 4 days without food, but they can survive for weeks if nectar or other liquid carbohydrate food sources are available. Larvae have chewing mouthparts.