Ilybius is a large genus of predatory aquatic beetles in the family Dytiscidae. The genus is native to the Palearctic (including Europe), the Near East, the Nearctic, and North Africa. 70 species has been described from this genus:
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