Dryomyzidae

The Dryomyzidae are a small family of flies ranging from 4–18 mm long, with prominent bristles and yellow to brown or rust-yellow coloring. The wings are very large. The roughly 22 species are placed in 6 genera (with two additional genera known only as fossils). Dryomyzid flies are found principally in the Holarctic, though some are found in the Southern Hemisphere. Very little is known of the habits of the adults or immatures, but adults are found in moist, shady habits among low-growing vegetation. Read more at Wikipedia