Muscidae (Muscid Flies)
These stout, medium-sized flies are grey or black, with darker stripes and other patterns. The species Musca domestica (Common Housefly) is a typical example. Larvae are opportunists that feed in decomposing organic debris, preferably with some animal matter. The adults occasionally visit flowers with exposed nectaries, particularly in the Carrot family. A few species, such as Stomoxys calcitrans (Stable Fly), will bite warm-blooded animals, seeking blood or salty perspiration.