| Aboeurhexius Park, 1952 |
| Aboeurhexius crenulatus Park, 1952 |
| Abryxis Raffray, 1890 |
| Acalophaena Sharp, 1886 |
| Acalophaena angularis (Erichson, 1840) |
| Acalophaena horridula Casey, 1905 |
| Acamatoxenus Mann, 1925 |
| Acamatoxenus suavis Mann, 1925 |
| Acaratopus Herman, 1981 |
| Acaratopus edenus Herman, 1981 |
| Achenomorphus Mostchulsky, 1858 |
| Achenomorphus (Aderocharis) Sharp, 1886 |
| Achenomorphus (Aderocharis) furtiva Sharp, 1886 |
| Achenomorphus (Dorocharis) Blackwelder, 1939 |
| Achenomorphus furtivus (Sharp, 1886) |
| Achenomorphus latro (Sharp, 1876) |
| Acrolocha Thompson, 1858 |
| Acrolocha newtoni Thayer, 2001 |
| Actiastes Casey, 1897 |
| Actiastes desertorum Grigarick & Schuster, 1971 |