Muscavirus is a genus of viruses, in the family Hytrosaviridae.

[1] The fly Musca domestica is the natural host.

Diseases associated with this genus include: salivary gland hypertrophy, and complete sterility of infected female flies by inhibiting eggs development.

[2][3] Viruses in the genus Muscavirus are enveloped, with rod-shaped geometries.

Musca domestica serve as the natural host.