Phthona is a genus of biting flies in the family of louse flies, Hippoboscidae. There are 3 known species. All are parasite of falconets of the genus Microhierax.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0