Family Helcomyzidae
Total number of species: 5.
| Genus | Species | Author | No. of specs. or vials in collection | Biogeographic Region |
| Helcomyza | ustulata | Curtis 1825 | 6 | Palaearctic |
| Helcomyza | ustulata | Curtis 1825 | 80 | Danish |
| Helcomyza | mirabilis | Melander, 1920 | in alcohol | Nearctic |
| Maorimyia | bipunctata | (Hutton, 1901) | in alcohol | Australasian |
| Paractora | angustata | Malloch 1933 | 1 | Neotropical |
| Paractora | rufipes? | (Macquart 1843) | 6 | Neotropical |