Predaceous Diving Beetles

Dytiscidae · 30 species

In Québec, the family Dytiscidae (order Coleoptera) counts 30 species of insects. The stars? Vertical Diving Beetle, Sculptured Predaceous Diving Beetle and Double-marked Swimming Beetle, the most often observed. The richest region: Capitale-Nationale, with 15 species. Every species has its own page: photos, its season, its habitat and the best places to see it near you.

Species observed by region

Where do the observations come from?

  • Mostly iNaturalist : photos taken by people all over Québec, with the species confirmed by the community.
  • Other public sources : such as eBird for birds and the provincial forest inventories, gathered by GBIF, the global biodiversity data network.
  • What we keep : confirmed observations, with an exact position (not blurred to protect a rare species), that their author allows to be reused.
  • One place counts once : several observations of the same species at the same spot (within 11 m) count as one.
  • So our numbers are lower : than iNaturalist’s total. A region without observations does not mean the species does not live there.

Data downloaded in September 2026.

  1. Capitale-Nationale15
  2. Montréal14
  3. Outaouais13
  4. Abitibi-Témiscamingue11
  5. Laurentides11
  6. Montérégie11
  7. Estrie10
  8. Bas-Saint-Laurent9
  9. Lanaudière9
  10. Mauricie7
  11. Côte-Nord6
  12. Centre-du-Québec5
  13. Saguenay–Lac-Saint-Jean4
  14. Nord-du-Québec4
  15. Chaudière-Appalaches4
  16. Gaspésie–Îles-de-la-Madeleine2