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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 Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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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Aaron7_8
Aaron7_8's profile picture
Helena Montana

Posts: 115
Aaron7_8 on Aug 10, 2008August 10th, 2008, 5:56 am EDT
I haven't been fly fishing for too long or exclusively, however, I have noticed an odd behavior while nymph fishing under a strike indicator. Have any of you had a problem with trout taking you strike indicator? This has happened a dozen or so times through out the year, and always with a orange pear shaped indicator. Also there was never a hatch going on and it always seemed to be the biggest fish in the given hole, which then spooked all the other trout around. Initially it was happening in late spring leading me to believe that the trout have mistaken it for a salmon fly, but the last time it happened was the first weekend in August. I am confused any experiences????????

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