| Malagoniella villosa Eschscholtz, 1822 |
| Marmarina Kirby, 1827 |
| Marmarina maculosa Olivier, 1789 |
| Martinezia Chalumeau, 1983 |
| Martinezia excavaticollis Blanchard, 1843 |
| Martinezia vandykei Hinton, 1936 |
| Martineziana Chalumeau & Özdikmen, 2006 |
| Martineziana dutertrei (Chalumeau, 1983) |
| Martineziana vandykei (Hinton, 1936) |
| Mazahuapertha Morón & Nogueira, 1998 |
| Mazahuapertha tolucana Bates, 1888 |
| Megasoma Kirby, 1825 |
| Megasoma cedrosa Hardy, 1972 |
| Megasoma elephas Fabricius, 1775 |
| Megasoma elephas subsp. elephas Fabricius, 1775 |
| Megasoma lecontei Hardy, 1972 |
| Megasoma nogueirai Morón, 2005 |
| Megasoma occidentalis Bolívar-Pieltain, Martínez & Jiménez-Asua, 1963 |
| Megasoma pachecoi Cartwright, 1963 |
| Megasoma thersites LeConte, 1861 |