Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin

Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Stream photos

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Epeorus albertae (Pink Lady) Mayfly Nymph Epeorus albertae (Pink Lady) Mayfly Nymph

Dorsal view of a Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Nymph from the East Fork Issaquah Creek in Washington

This specimen keys to the Epeorus albertae group of species. Of the five species in that group, the two known in Washington state are Epeorus albertae and Epeorus dulciana. Of the two, albertae has been collected in vastly more locations in Washington than dulciana, suggesting it is far more common. On that basis alone I'm tentatively putting this nymph in albertae, with the large caveat that there's no real information to rule out dulciana.

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27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

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Timpanoga?

CalebBoyle has attached these 4 pictures to aid in identification. The message is below.

CalebBoyle
Charlotte, NC

Posts: 11

CalebBoyle on Apr 3, 2008April 3rd, 2008, 8:39 am EDT

Am a right?

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Apr 3, 2008April 3rd, 2008, 9:46 am EDT

Caleb-

Let's just say you were right. Based on the cast nymphal shuck, your specimen appears to be Dannella lita (previously classified as Timpanoga lita) or Dannella simplex (previously classified as Timpanoga simplex).

Were these photos taken in North Carolina? Was the emergence event, which under normal circumstances would be in June or July, perhaps artificially accelerated as a result of the water temperature in your aquarium?

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

CalebBoyle
Charlotte, NC

Posts: 11

CalebBoyle on Apr 5, 2008April 5th, 2008, 2:35 pm EDT

Thanks Roger-- man I can't keep up with all these genus changes...

Troutnut