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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Help! We need more information!

This topic is about the Kingdom Animalia

Metazoa is the kingdom of animals. Worms are metazoans and so were the dinosaurs. Trout and mayflies are metazoans. You are probably a metazoan.

See Arthropoda for most of the invertebrates trout eat, or skip straight to the insect orders Ephemeroptera (Mayflies), Trichoptera (Caddisflies), or Plecoptera (Stoneflies), which are the three most important.

The non-arthropod classes are listed on this site only to hold pictures, so far, and I haven't put much information up yet about them.

Example specimens

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Male Epeorus albertae (Pink Lady) Mayfly Spinner

Lateral view of a Male Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Spinner from the North Fork Stillaguamish River in Washington

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Male Epeorus deceptivus Mayfly Dun

Artistic view of a Male Epeorus deceptivus (Heptageniidae) Mayfly Dun from the South Fork Sauk River in Washington

The lack of a darkened humeral crossvein rules out Epeorus albertae and Epeorus dulciana. The lack of a dark macula on the forefemora rules out Epeorus longimanus. The small size rules out Epeorus grandis and Epeorus permagnus. That leaves as the only possibility known in Washington state Epeorus deceptivus. It is a small species, although not reportedly quite as small as this specimen. I couldn't find anything in the species description in Traver (1935) to definitively confirm or rule out the species ID, given that I don't have the preserved specimen to check under a microscope, but it has to be either deceptivus or something not yet reported in Washington. It was collected at the same time as a similar-sized female dun.

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Female Acentrella turbida (Tiny Blue-Winged Olive) Mayfly Spinner

Lateral view of a Female Acentrella turbida (Baetidae) (Tiny Blue-Winged Olive) Mayfly Spinner from the Middle Fork Snoqualmie River in Washington

Classof06
Posts: 1

Classof06 on Nov 3, 2006November 3rd, 2006, 1:09 am EST

Me and my friend are trying to do a Biology project on Animalia but we can't find any of the information that we need! We need the information before the end of next week. Please help us!

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Nov 3, 2006November 3rd, 2006, 4:19 am EST

Sounds to me like you're just having fun, but on the remote chance that you're actually serious, what specific information do you think you need, which you are unable to find? Without stating what you are looking for, no one could possibly help you find it, nor would you be able to recognize it, even if you were to accidentally stumble across it.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Nov 3, 2006November 3rd, 2006, 6:31 am EST

Animalia is the baddest kingdom in the whole domain of Eukaryota. Take that, Protista!

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Nov 3, 2006November 3rd, 2006, 1:28 pm EST

I know you guys are assuming that Class of '06 is goofing around, but what if they really need help? On the other hand, if they're really having that much trouble finding info on Animalia on the Internet, perhaps they need a different kind of help than we can provide.

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Nov 3, 2006November 3rd, 2006, 2:37 pm EST

Gonzo-

Oh, I don't doubt Classof06 and friend need serious help. After all, it appears they are still taking classes while all of their classmates graduated six months ago.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Nov 3, 2006November 3rd, 2006, 3:40 pm EST

Rog,

I guess the possibility that they are really inept graduate students with a lot of catching up to do before their dissertation is out of the question?

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Nov 3, 2006November 3rd, 2006, 5:16 pm EST

Gonzo-

Guess I missed that possibility. How on earth did I overlook all those obvious clues?

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Nov 4, 2006November 4th, 2006, 3:26 am EST

They could always be the kindergarten class of '06 writing a report on animals for first grade.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Nov 4, 2006November 4th, 2006, 4:15 am EST

See what I mean? Now, don't you feel bad about picking on a couple of kindergarteners? Perhaps we should alert their parents about their Internet access. If those poor naive kids found their way onto Troutnut.com, I shudder to think about the other frightening places they might visit!