Kebnat

Hexagenia

2 species

In Québec, the genus Hexagenia (family Ephemeridae) counts 2 species of insects. The stars? Giant Mayfly and Emergent Mayfly, the most often observed. The richest region: Estrie, 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. Estrie2
  2. Montréal2
  3. Abitibi-Témiscamingue2
  4. Laurentides2
  5. Montérégie2
  6. Mauricie1
  7. Outaouais1
  8. Nord-du-Québec1
  9. Chaudière-Appalaches1
  10. Laval1
  11. Lanaudière1

Hexagenia 2

Ephemeroptera
All4,550Lepidoptera2,108Coleoptera1,199Hemiptera482Hymenoptera230Diptera210Odonata151Orthoptera61Trichoptera35Ephemeroptera23Neuroptera21Mecoptera9Blattodea7Plecoptera7Dermaptera4Mantodea2Phasmida1
Ephemeridae
All23Heptageniidae11Baetidae4Ephemeridae3Ephemerellidae2Leptophlebiidae2Isonychiidae1
Giant Mayfly42 observations
Emergent Mayfly13 observations