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.

A beautiful braided reach of the Sag River, with the Philip Smith Mountains in the Arctic National Wildlife Refuge (ANWR) in the background.

From the Sagavanirktok River in Alaska

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Holocentropus Caddisfly Larva Holocentropus Caddisfly Larva

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington

This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.

11 Recently Added Photos

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.

Siphloplecton?

DayTripper

Northern MI

Posts: 70

DayTripper on May 28, 2013May 28th, 2013, 4:32 pm EDT

Had a cloud of these flying over me for an hour or so last night while waiting for march browns. I was hoping for a female to go along with the males I was catching but it didn't work out. This guy was collected from the Au Sable system in northern MI. He is 12mm long. Two tails, hind wings are present. The only thing is I don't know if you could call the wings mottled, or does that only apply to the duns?

Whoops, tried uploading as an attachment but it isn't popping up after it uploads.

http://farm9.staticflickr.com/8137/8873344468_b42723dfa7_o.jpg

Crepuscular

Boiling Springs, PA

Posts: 920

Crepuscular on May 29, 2013May 29th, 2013, 4:51 am EDT

Not Siphloplecton. Heptageniid of some type. grey fox spinner? Male M. vicarium would be my guess. But it may be some other Mccaffertium species. I'll defer to the experts. Here is a recent photo of a male Siphloplecton basale spinner http://www.troutnut.com/topic/7995/Springtime-fun

DayTripper

Northern MI

Posts: 70

DayTripper on May 30, 2013May 30th, 2013, 4:14 pm EDT

Gracias, gentlemen. I actually considered vicarium and discounted it because of the color. Rookie mistake, I guess.

Mack,
Plenty more photos where that came from. All sorts of angles, etc. Just gotta edit.

Thanks again,
Alex