| Aphrastus Say, 1831 |
| Aphrastus angularis Champion, 1911 |
| Aphrastus submarginatus Champion, 1911 |
| Apinocis Lea, 1927 |
| Apinocis nasutus (LeConte, 1859) |
| Apinocis subnudus Buchanan, 1932 |
| Apleurus Chevrolat, 1873 |
| Apleurus albovestitus (Casey, 1891) |
| Apleurus angularis (LeConte, 1859) |
| Apleurus aztecus (Champion, 1902) |
| Apleurus jacobinus (Casey, 1891) |
| Apleurus lutulentus (LeConte, 1859) |
| Apleurus saginatus (Casey, 1891) |
| Apostasimerini Schönherr, 1844 |
| Apotrepus Casey, 1892 |
| Apotrepus densicollis Casey, 1892 |
| Apteromechus Faust, 1896 |
| Apteromechus flavopunctatus Champion, 1906 |
| Apteromechus longulus Champion, 1906 |
| Apteromechus nitidifrons Champion, 1906 |