| Mallodonini Thomson, 1861 |
| Mallodonopsis Thomson, 1860 |
| Mallodonopsis corrosus Bates, 1879 |
| Mallodonopsis mexicana Thomson, 1860 |
| Malobidion Schäffer, 1908 |
| Malobidion auricome Chemsak & Linsley, 1963 |
| Malobidion brunneum Schäffer, 1908 |
| Malobidion grande Chemsak & Linsley, 1963 |
| Mannophorus LeConte, 1854 |
| Mannophorus forreri Bates, 1885 |
| Mannophorus laetus LeConte, 1854 |
| Mecas LeConte, 1852 |
| Mecas (Dylobolus) Thomson, 1868 |
| Mecas (Dylobolus) rotundicollis Thomson, 1868 |
| Mecas (Mecas) LeConte, 1852 |
| Mecas (Mecas) albovitticollis Breuning, 1955 |
| Mecas (Mecas) ambigena Bates, 1881 |
| Mecas (Mecas) bicallosa Martin, 1924 |
| Mecas (Mecas) cana (Newman, 1840) |
| Mecas (Mecas) cana subsp. cana (Newman, 1840) |