Kebnat

Ephemerella

2 species

In Québec, the genus Ephemerella (family Ephemerellidae) counts 2 species of insects. The stars? Sulphur Dun and Dark Hendrickson, the most often observed. The richest region: Bas-Saint-Laurent, with 2 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. Bas-Saint-Laurent2
  2. Capitale-Nationale2
  3. Mauricie2
  4. Montréal2
  5. Côte-Nord2
  6. Nord-du-Québec2
  7. Chaudière-Appalaches2
  8. Laurentides2
  9. Montérégie2
  10. Estrie1
  11. Lanaudière1
  12. Centre-du-Québec1

Ephemerella 2

Ephemeroptera
All4,550Lepidoptera2,108Coleoptera1,199Hemiptera482Hymenoptera230Diptera210Odonata151Orthoptera61Trichoptera35Ephemeroptera23Neuroptera21Mecoptera9Blattodea7Plecoptera7Dermaptera4Mantodea2Phasmida1
Ephemerellidae
All23Heptageniidae11Baetidae4Ephemeridae3Ephemerellidae2Leptophlebiidae2Isonychiidae1
Sulphur Dun58 observations
Dark Hendrickson33 observations