| Madopterus Schönherr, 1833 |
| Madopterus cylindricus Boheman, 1844 |
| Maemactes Schönherr, 1837 |
| Maemactes cribratus (LeConte, 1876) |
| Maemactes hispidulus (LeConte, 1876) |
| Maemactes imitator Kissinger, 1963 |
| Maemactes pestis O'Brien, 1979 |
| Maemactes pilosus Champion, 1905 |
| Maemactes punctatus Kissinger, 1963 |
| Maemactes ruficornis Boheman, 1837 |
| Maemactes subfasciatus Champion, 1905 |
| Magdalinops Dietz, 1891 |
| Magdalinops vittipennis Dietz, 1891 |
| Marshallius Kuschel, 1955 |
| Marshallius guttatus (Boheman, 1843) |
| Marshallius leucostictus (Champion, 1902) |
| Marshallius rotundicollis (Champion, 1902) |
| Marshallius rusticus (Klug, 1829) |
| Maseorhynchus Sharp, 1891 |
| Maseorhynchus hondurensis Sharp, 1891 |