| Loedelia maculicollis (LeConte, 1874) |
| Loedelia magnifica Wolcott, 1943 |
| Loedelia mexicana (Gahan, 1910) |
| Loedelia peninsularis Barr, 1950 |
| Loedelia westcotti Opitz, 2013 |
| Madoniella Pic, 1935 |
| Madoniella aspera Opitz, 2019 |
| Madoniella erythrocephala (Gorham, 1882) |
| Madoniella punctata (Gorham, 1882) |
| Madoniella rectangularis Opitz, 2011 |
| Madoniella vogti Opitz, 2011 |
| Megaphloeus Opitz, 2010 |
| Megaphloeus absentis Opitz, 2011 |
| Megaphloeus animosus (Wolcott, 1927) |
| Megaphloeus marginipes (Chevrolat, 1874) |
| Megaphloeus setulosus (Thomson, 1860) |
| Monophylla Spinola, 1841 |
| Monophylla californica Fall, 1901 |
| Monophylla pallipes Schaeffer, 1908 |
| Namba Rifkind, 2017 |