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Blue-winged Olives
Baetis

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 Species Ephemerella invaria (Sulphur)

This is page 1628 of specimens of Ephemerella invaria. Visit the main Ephemerella invaria page for:

  • The behavior and habitat of Ephemerella invaria.
  • 15 underwater pictures of Ephemerella invaria.
  • 2 streamside pictures of Ephemerella invaria.

Specimens of the Mayfly Species Ephemerella invaria

3 Male Spinners
3 Female Spinners
7 Male Duns
5 Female Duns
27 Nymphs

References

Species Range
Resources
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