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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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Jmd123 has attached these 2 pictures. The message is below.
Jmd123
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Oscoda, MI

Posts: 2474
Jmd123 on May 25, 2012May 25th, 2012, 9:28 pm EDT
AAAAAGGGHH, you say, I'm teasing you with trout stories and then posting more damned flower pictures!

Back on the Rifle several miles below my previous day's outting, arriving at 3:30-ish, found a quiet stream with few flies or rising fish - and STILL NO TOURISTS!! Jumped in, had hits almost immediately on a #12 Elkhair from yesterday. Very little, random hatching activity, but a few fish were hitting the caddis, slow and steady all afternoon. Then as darkness fell, more fish started feeding, then more and more and pretty soon the water was just boiling with fish, right around 9:30 p.m.-ish. Having lost all the brown caddis, I was floating a #12 Adams and they hammered it. When two fish swallowed the last two I had, I switched to a #12 grey Elkhair caddis and got yet more fish! I never could see what exactly they were rising to, there was a big midge hatch right before dark but again just a complete mixture of flies and not all that many that I could see. It lasted just a half hour and by about 10 it got quiet again. Total 14 brown trout, biggest was 15", the majority over 10". Another freaking wild day!

Having seen the pinks yesterday on the trail, I remembered where to look for some yellow lady's slippers that I had seen and photographed last year. Found a whole bunch this year, right next to the road and the way to the fishing spot.

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...

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