Which is known as 'Hump backed flies'?

Phoridae is known as 'Humpbacked flies'.
The Phoridae are a family of small, hump-backed flies resembling fruit flies. Phorid flies can often be identified by their escape habit of running rapidly across a surface rather than taking to the wing.
This family, also known as humpbacked flies and scuttle flies (4000 species), is another group that exploits a wide range of habitats and exhibits diverse feeding habits.