| Bibio obscurus Loew, 1864 |
| Bibio oreonanus Fitzgerald, 1997 |
| Bibio piceus Bellardi, 1859 |
| Bibio scita Walker, 1848 |
| Bibio slossonae Cockerell, 1909 |
| Bibio stonei Hardy, 1942 |
| Bibio superfluus Schiner, 1868 |
| Bibio tenuipes Coquillett, 1902 |
| Bibio vicinus Lynch-Arribalzaga, 1878 |
| Bibio xanthopus Wiedemann, 1828 |
| Bibio xeronastes Fitzgerald, 1997 |
| Bibiodes Coquillett, 1904 |
| Bibiodes halteralis Coquillett, 1904 |
| Bibionidae Fleming, 1821 |
| Bibioninae Fleming, 1821 |
| Cnemidoctenia Enderlein, 1934 |
| Dactylodiscia Enderlein, 1934 |
| Dilophus Meigen, 1803 |
| Dilophus anomalus (Hardy, D. E., 1942) |
| Dilophus maculatus Bellardi, 1859 |