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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives

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.

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
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.

Ephemerella subvaria (Hendrickson) Mayfly Nymph Pictures

This mayfly was collected from unknown in Wisconsin on February 7th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Nymph

Jason...Thanks for the reminder!
2 replies
Posted by Oldredbarn on Dec 18, 2009
Last reply on Dec 20, 2009 by Oldredbarn
Everyone speaks of the Hex or maybe the Brown Drake here in Michigan, but the Henny's the fly that reminds us of Opening Day! The posting of this little prize fighter, look at those biceps...(You think that it's not adapted to fighting current, think again)reminds me that here in Michigan we only have 127 days until Opening Day...Whoa!

I have been tying at every free moment I can get and now I feel the pressure..."So much to do and so little time." Some folks are counting down to Christmas, but Jason here, ever the disciplinarian, is telling us to stop these frivilous postings and get busy! It will be spring again soon and your fly box is going to be bare, and found wanting, if you continue to dally...

Sometimes Opening Day is more about the tradition and hoopla than fishing, but it's hard to beat. I have been awakened at Gates' Lodge on Opening Day by a guy in the next room playing bagpipes! I have even spent an Opening Day weekend, sans fishing gear, at the Lodge for an anniversary...

My wife still remembers Julie Gates' Walleye the Friday evening before Opening Day...She actually enjoyed the atmosphere that evening more than the fancy restaurant I took her to the next day in Gaylord...The "old-guard" shows for that weekend even if they are so old they haven't been able to fish in years. We all smuggle in cases of wine in to the dining room and scotch and let the bullshitting begin!

Opening Day...Out come the Hardy's and cane and the small vials of something to warm you...Some last "Saturday's in April" in Crawford Co can be down right mean...You try and find an unoccupied spot on the bank somewhere along the "Holy Water", preferably with an old angling buddy and wait for a hatch.

Sometimes ugly weather can be a blessing...May bring out Mr. Baetis vagans by the droves...Maybe you'll see the Little Slate-Winged Mahogany, or if you get some sun the Little Black Caddis...If you have been a good boy during the preceding winter...Pop! "There's a Henny! Look! Look! Over there in the bubble stream..." Ahhh yes! "Hey! What's this crawling across my waders? Some kind of stonefly...We are sitting, after all, in what Rusty calls 'Stonefly Alley'"

Thanks for the reminder Jason and the reverie I'll apologize for...Now the rest of you...Don't you be asking me for a fly come Opening Day! You have been forwarned...Only 127 days to an anglers christmas morning...


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Ephemerella subvaria (Hendrickson) Mayfly Nymph Pictures

Collection details
Location: unknown, Wisconsin
Date: February 7th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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