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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
Baetis

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 Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington
Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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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Mahones41 has attached these 3 pictures to aid in identification. The message is below.
Falsifly
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Hayward, WI.

Posts: 660
Falsifly on Feb 24, 2012February 24th, 2012, 7:25 am EST
UFO?
Falsifly
When asked what I just caught that monster on I showed him. He put on his magnifiers and said, "I can't believe they can see that."
Entoman
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Northern CA & ID

Posts: 2604
Entoman on Feb 24, 2012February 24th, 2012, 7:28 am EST
Ha! That is certainly the most accurate name posted at this point, Al.:)
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
Oldredbarn
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Novi, MI

Posts: 2600
Oldredbarn on Feb 24, 2012February 24th, 2012, 7:50 am EST
hook size 16..


Well that certainly takes my horse-in-the-race out of the race...:)

Spence
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
Entoman
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Northern CA & ID

Posts: 2604
Entoman on Feb 24, 2012February 24th, 2012, 8:22 am EST
How about a pale baetid?:) I'm beginning to think Al's diagnosis is as close as we're going to get...
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
Mahones41
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Posts: 11
Mahones41 on Feb 24, 2012February 24th, 2012, 8:30 am EST
How about a pale baetid?:) I'm beginning to think Al's diagnosis is as close as we're going to get...


there was a sporadic baetid hatch. smaller in size then this UFO
PaulRoberts
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Colorado

Posts: 1776
PaulRoberts on Feb 24, 2012February 24th, 2012, 8:30 am EST
Guys, I just blew the images up to 2000dpi using PhotoShop (PS) and they are interesting, even potentially revealing.

Mahones, is the first image of the bug on the water's surface?

What I see in the second image is a long front leg and large dark eyes -like a male Heptageniidae. It is a very pale rusty tan with a darker rusty thorax. Also, the wing shows dark areas that appear to be wing vein pigment.

It does look like the "Cream Cahill" image Mahones gave the Troutnut link to.

In the first image it appears to be on the water's surface, and is facing the camera. It has two large dark eyes and a darker contrasting thorax from the very pale abdomen. This image the sun is striking it strongly on one side.. Interestingly, if I sample the color of the sunlit wing, PS selects it as a yellow. While the body parts are selected in the orange.
Entoman
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Northern CA & ID

Posts: 2604
Entoman on Feb 24, 2012February 24th, 2012, 8:59 am EST
Hi Paul,

Remember we are talking about the Letort, which is the quintessential spring creek. Not a lot of mayfly diversity to begin with, let alone having habitat conducive to hosting Summer Cahills. But, I suppose anything is possible (though it remains highly unlikely).
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
Mahones41
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Posts: 11
Mahones41 on Feb 24, 2012February 24th, 2012, 9:10 am EST
Paul, yes the first one is the bug on the surface. also, referring to your wing pigment statement from what i remember that seems accurate. I am afraid that i have looked at too many pictures on this sight since then and now my memory is tainted.
PaulRoberts
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Colorado

Posts: 1776
PaulRoberts on Feb 24, 2012February 24th, 2012, 9:55 am EST
Yeah...I'm not making any guesses. Just the best I could do with the images. It was worth a look.
Crepuscular
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Boiling Springs, PA

Posts: 920
Crepuscular on Feb 24, 2012February 24th, 2012, 10:11 am EST
Well gentelmen there is a "sulphur" that emerges from the upper letort in the winter, personally I have never seen it this late in the winter I have fished over it in January though.I fished the Letort two days last week in the upper sections and there were definitely olives about and even a few rising fish. but i did not see the winter sulphurs. Not sure what this post proves. The green in the water is cress and other aquatic veg. I doubt it is a hepageniid, i've never collected one from the letort but most likely an ephemerellid. By the way dont tell anybody about these winter sulphurs ;)
Entoman
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Northern CA & ID

Posts: 2604
Entoman on Feb 24, 2012February 24th, 2012, 10:20 am EST
Hi Crepuscular -

Yeah, that was pretty much the conclusion arrived at earlier in the thread. We continued the speculation... Well, 'cause that's just what we Troutnutter's do this time of year, I guess!:)
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
JOHNW
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Chambersburg, PA

Posts: 452
JOHNW on Feb 24, 2012February 24th, 2012, 11:11 am EST
Crepuscular et al,
I'll go with the sulphur, and yes I'm sticking to common name only. I frequent the Letort this time of year and it is not at all uncommon to see a wayward sulphur type insect on any given day.
Louis will be able to verify this fact. These limestoners are so consistent that it is not unusual for bugs to emerge at "the wrong time of year".
JW
"old habits are hard to kill once you have gray in your beard" -Old Red Barn
Oldredbarn
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Novi, MI

Posts: 2600
Oldredbarn on Feb 24, 2012February 24th, 2012, 12:12 pm EST
Yeah, that was pretty much the conclusion arrived at earlier in the thread. We continued the speculation... Well, 'cause that's just what we Troutnutter's do this time of year, I guess!:)


Kurt...I was beginning to think the same. :) We got a few inches of new snow here last night and our minds are focused more on getting ready for the upcoming season...It isn't the first time we TroutNutter's have come down with Cabin Fever. :) We pounched on this one and bruised it up pretty badly.

Spence

and yes I'm sticking to common name only


By the way dont tell anybody about these winter sulphurs ;)


Got to love them PA Boys! Letort!? What Letort? You think that this old forgotten stream even has hatches anymore??? No way...Ain't no one here but us chickens...Nothing to see here, just move on...Sorry we brought it up...:) How do you spell that? S-U-L-P-H-U-R? If there's any bugs in the Letort that was the last one! :) John & Eric you two are a hoot! You know I love it!
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
Entoman
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Northern CA & ID

Posts: 2604
Entoman on Feb 24, 2012February 24th, 2012, 12:47 pm EST
Spence -

How do you spell that? S-U-L-P-H-U-R?


No, S-U-L-F-U-R. Sulphur is the old latin, though it's still spelled this way occasionally in the UK. Kind of a color vs. colour deal? Gray vs. grey? Geez, I must be bored...:)LOL
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
JOHNW
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Chambersburg, PA

Posts: 452
JOHNW on Feb 25, 2012February 25th, 2012, 4:19 am EST
Spence,
No attempt at obfuscation on my part. I'm just not bright enough to ID beyond the common name. Perhaps I should have just gone with medium yellow B!@#$#@ (MYB)

Besides everyone knows the Letort is nothing but a weedy drainage ditch full of nasty little mud sink holes and muskrats!! ;)
"old habits are hard to kill once you have gray in your beard" -Old Red Barn
Oldredbarn
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Novi, MI

Posts: 2600
Oldredbarn on Feb 26, 2012February 26th, 2012, 4:35 am EST
Besides everyone knows the Letort is nothing but a weedy drainage ditch full of nasty little mud sink holes and muskrats!! ;)


Yuk! That's enough to keep me away, John...;)

Spence
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
Martinlf
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Moderator
Palmyra PA

Posts: 3047
Martinlf on Jan 8, 2013January 8th, 2013, 11:26 am EST
OK, I was thinking it was Eric who saw this bug last February, but it was Mahones41. I hear there are some ephemerellids hatching now on the Letort, as Eric mentioned above, and that more than one person has seen them. I'll let them speak for themselves, though, if they wish. Hope someone can photograph a specimen.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
PaulRoberts
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Colorado

Posts: 1776
PaulRoberts on Jan 8, 2013January 8th, 2013, 11:36 am EST
I hear the muskrats are emerging up there.
Crepuscular
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Boiling Springs, PA

Posts: 920
Crepuscular on Jan 8, 2013January 8th, 2013, 12:45 pm EST
I hear there are some ephemerellids hatching now on the Letort
no nothing happening here

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