Housefly
The housefly (Musca domestica) is the world's most common species of fly, accounting for about 90% of all flies in human habitations, and indeed one of the most widely distributed insects, found all over the world. Adult houseflies grow to 8–12 millimetres (0.3–0.5 in) long, with females being slightly larger than males.Photo: Muhammad Mahdi Karim