| Magusa Walker, 1857 |
| Magusa orbifera (Walker, 1857) |
| Mamestra Ochsenheimer, 1816 |
| Mamestra ciniva Schaus, 1898 |
| Mamestra configurata Walker, 1856 |
| Mamestra crista Walker, 1856 |
| Mamestra dubitans Walker, 1856 |
| Mamestra illaudabilis Grote, 1875 |
| Mamestra olivacea Morrison, 1874 |
| Mamestra prodeniformis Smith, 1888 |
| Mamestra sadales Druce, 1899 |
| Marimatha Walker, 1866 |
| Marimatha nigrofimbria (Guenée, 1852) |
| Meleneta Smith, 1908 |
| Meleneta opinor (Dyar, 1910) |
| Metaxyllia Dyar, 1922 |
| Metaxyllia metallicela Dyar, 1922 |
| Micrathetis Hampson, 1908 |
| Micrathetis tecnion Dyar, 1914 [1915] |
| Micrathetis triplex (Walker, 1857) |