| Leptodius parvulus (Fabricius, 1793) |
| Liomera Dana, 1851 |
| Liomera (Liomera) Dana, 1851 |
| Liomera (Liomera) cinctimana (White, 1847) |
| Liomera cinctimana (White, 1847) |
| Liomerinae Sakai, 1976 |
| Lipaesthesius Rathbun, 1898 |
| Lipaesthesius leeanus Rathbun, 1898 |
| Lipkemedaeus Stevcic, 2011 |
| Lipkemedaeus pelagius (Glassell, 1936) |
| Lipkemedaeus spinulifer (Rathbun, 1898) |
| Lophozozymus A. Milne-Edwards, 1863 |
| Lophozozymus (Lophoxanthus) A. Milne-Edwards, 1879 |
| Lophozozymus (Lophoxanthus) frontalis Rathbun, 1894 |
| Medaeus Dana, 1851 |
| Medaeus pelagius (Glassell, 1936) |
| Medaeus spinulifer (Rathbun, 1898) |
| Melybia Stimpson, 1871 |
| Melybia thalamita Stimpson, 1871 |
| Microcassiope Guinot, 1967 |