A genus of small, black, dipterous insects containing the species Piophila casei of the family Muscidæ: Piophila is a taxonomic group including the "cheese fly" that deposits its eggs preferably on cheese, but also on ham, bacon, and other fatty foods.

The larvae of the Piophila casei, commonly called "cheese skippers", are a cause of intestinal myiasis, which is an invasion or infection of a body area or cavity by the larvae of flies.