Flesh-fly

Flies of the Diptera family Sarcophagidae (from the Greek σάρκο sarco- = flesh, φάγε phage = eating; the same roots as the word "sarcophagus") are commonly known as flesh flies. Most flesh flies breed in carrion, dung, or decaying material, but a few species lay their eggs in the open wounds of mammals;[1] hence their common name. Some flesh fly larvae are internal parasites of other insects. These larvae, commonly known as maggots, live for about 5–10 days, before descending into the soil and maturing into adulthood. At that stage, they live for 5–7 days.

http://en.wikipedia.org/wiki/Flesh-flies