The Macrostomidae are a family of small basal free-living flatworms (Macrostomida, Turbellaria, Platyhelminthes), and members of the marine, brackish, freshwater meiobenthos. There are currently about 180 named species in this family.
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