| Oxynops monochroma (Wulp, 1890) |
| Palpotachina Townsend, 1915 |
| Palpotachina similis Townsend, 1915 |
| Palpozenillia Townsend, 1934 |
| Palpozenillia palpalis (Aldrich, 1932) |
| Panacemyia Townsend, 1919 |
| Parabelvosia Blanchard, E. E., 1954 |
| Parabillaea Blanchard, E. E., 1937 |
| Parachaeta Coquillett, 1897 |
| Paradejeania Brauer & Bergenstamm, 1893 |
| Paradejeania rutilioides (Jaennicke, 1867) |
| Paradidyma Brauer & Bergenstamm, 1891 |
| Paradidyma albifacies (Wulp, 1890) |
| Paradidyma aperta Brauer & Bergenstamm, 1893 |
| Paradidyma bicincta (Reinhard, 1934) |
| Paradidyma contigua (Wulp, 1890) |
| Paradidyma crassiseta Reinhard, 1934 |
| Paradidyma derelicta Reinhard, 1934 |
| Paradidyma merista Reinhard, 1953 |
| Paradidyma mexicana (Brauer & Bergenstamm, 1893) |