Yellow may dun

Weight

Not recorded

Length

Not recorded

Lifespan

Not recorded

Main food

Not recorded

Habitat

Not recorded

Young per litter or clutch

Not recorded

Conservation status

Not recorded

Countries on record

Not recorded

Not recorded

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

1. kingdomAnimalia
2. phylumArthropoda
3. classInsecta
4. orderEphemeroptera
5. familyHeptageniidae
6. genusHeptagenia
7. SpeciesHeptagenia sulphurea (Müller, 1776)

Synonyms Ephemera sulphurea, Heptagenia elegans

Catalogue of Life

CompareYellow may dun vs Margined flat-headed mayflyYellow may dun vs Dusky flat-headed mayflyYellow may dun vs MayflyYellow may dun vs Heptagenia adaequata

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@misc{yellow_may_dun_2026,
  title = {Yellow may dun (Heptagenia sulphurea)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/yellow-may-dun},
  note = {Data as of 2026-11-14}
}