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Blue-winged Olives

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs)

This is page 8732 of specimens of Ephemerella. Visit the main Ephemerella page for:

  • The behavior and habitat of Ephemerella.
  • 37 underwater pictures of Ephemerella.
  • 7 streamside pictures of Ephemerella.

Specimens of the Mayfly Genus Ephemerella

13 Male Spinners
13 Female Spinners
23 Male Duns
19 Female Duns
90 Nymphs


Species in Ephemerella
Ephemerella alleni00
Ephemerella aurivillii21134
Ephemerella dorothea dorotheaPale Evening Dun211
Ephemerella dorothea infrequensPale Morning Dun635
Ephemerella excruciansPale Morning Dun22141
Ephemerella invariaSulphur45187
Ephemerella needhamiLittle Dark Hendrickson941
Ephemerella subvariaHendrickson34162
Ephemerella tibialisLittle Western Dark Hendrickson638
9 species (Ephemerella apopsis, Ephemerella catawba, Ephemerella consimilis, Ephemerella hispida, Ephemerella maculata, Ephemerella mucronata, Ephemerella nuda, Ephemerella unicornis, and Ephemerella verruca) aren't included.
Genus Range
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