Syrphid flies
The flies in this large family are commonly found on flowers, where they are sometimes confused with bees and wasps. Some species are smooth and others hairy, and they are black or brown, sometimes with white, yellow or orange markings.
They may be recognized by their way of hovering and their colourful markings. The adults are usually 10 to 20 mmm long. The larvae vary in appearance depending on the species.