Species list for Tachygyna
| Taxon | Author | Action | Last updated |
|---|---|---|---|
| 1. Tachygyna alia | Millidge, 1984 | Catalog | - - |
| 2. Tachygyna cognata | Millidge, 1984 | Catalog | - - |
| 3. Tachygyna coosi | Millidge, 1984 | Catalog | - - |
| 4. Tachygyna delecta | Chamberlin & Ivie, 1939 | Catalog | - - |
| 5. Tachygyna exilis | Millidge, 1984 | Catalog | - - |
| 6. Tachygyna gargopa | (Crosby & Bishop, 1929) | Catalog | - - |
| 7. Tachygyna haydeni | Chamberlin & Ivie, 1939 | Catalog | - - |
| 8. Tachygyna pallida | Chamberlin & Ivie, 1939 | Catalog | - - |
| 9. Tachygyna proba | Millidge, 1984 | Catalog | - - |
| 10. Tachygyna sonoma | Millidge, 1984 | Catalog | - - |
| 11. Tachygyna speciosa | Millidge, 1984 | Catalog | - - |
| 12. Tachygyna tuoba | (Chamberlin & Ivie, 1933) | Catalog | - - |
| 13. Tachygyna ursina | (Bishop & Crosby, 1938) | Catalog | - - |
| 14. Tachygyna vancouverana * | Chamberlin & Ivie, 1939 | Catalog | - - |
| 15. Tachygyna watona | Chamberlin, 1949 | Catalog | - - |