Horse and Deer Flies

Tabanidae · 36 species

In Québec, the family Tabanidae (order Diptera) counts 36 species of insects. The stars? Striped Deer Fly, Bothersome Deer Fly and Black Deer Fly, the most often observed. The richest region: Estrie, with 30 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. Estrie30
  2. Laurentides29
  3. Montérégie29
  4. Montréal28
  5. Outaouais25
  6. Lanaudière20
  7. Chaudière-Appalaches17
  8. Mauricie16
  9. Côte-Nord15
  10. Capitale-Nationale14
  11. Abitibi-Témiscamingue10
  12. Bas-Saint-Laurent9
  13. Nord-du-Québec7
  14. Saguenay–Lac-Saint-Jean6
  15. Centre-du-Québec6
  16. Gaspésie–Îles-de-la-Madeleine5
  17. Laval5