What is the 'real' name of the housefly?

Musca domestica is the name of the housefly.

Specifically, the insect in question has two main names. One is the common name of common housefly, house fly or house-fly. The other is the scientific name of Musca domestica. The name Musca ("fly") represents the genus to which the housefly belongs. The name domestica ("domestic") signals the species within the genus.