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.
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With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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Pink Cahills
Like most common names,"Pink Cahill" can refer to more than one taxon. They're previewed below, along with 6 specimens. For more detail click through to the scientific names.
Mayfly Genus Stenacron
These are very rarely called Pink Cahills.
The species in this genus were formerly classified in Stenonema. See the genus Maccaffertium for details. Only one species, Stenacron interpunctatum, is important to fly fishermen. See its page for details.
See 5 more specimens...
Mayfly Species Epeorus vitreus
These are very rarely called Pink Cahills.
This is the second most common Epeorus species in the East and Midwest. Most anglers will encounter sporadic hatches of Epeorus vitreus once in a while, and sometimes a more concentrated emergence causes a good rise of fish.
This is my favorite mayfly from 2004, and it appears on my popular Be the Trout: Eat Mayflies products. Check them out!
Its identification is really up in the air. It might be a late-season vitreus dun but it may very well be one of the more obscure species in that genus.
Its identification is really up in the air. It might be a late-season vitreus dun but it may very well be one of the more obscure species in that genus.
See 12 more specimens...