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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 Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Nymph from the East Fork Issaquah Creek in Washington
This specimen keys to the Epeorus albertae group of species. Of the five species in that group, the two known in Washington state are Epeorus albertae and Epeorus dulciana. Of the two, albertae has been collected in vastly more locations in Washington than dulciana, suggesting it is far more common. On that basis alone I'm tentatively putting this nymph in albertae, with the large caveat that there's no real information to rule out dulciana.
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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Arachnida (Mites and Spiders) Arthropod Adult from Various wetlands in Montana
Water mites are common in lakes and ponds but because they are so small they do not get noticed.These specimens are from temporary wetlands in Glacier National Park.
Yann
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Posts: 1
Yann on Sep 19, 2011September 19th, 2011, 6:16 am EDT
The second look like an arrenurus female
Jmd123
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Oscoda, MI

Posts: 2474
Jmd123 on Sep 19, 2011September 19th, 2011, 9:32 am EDT
I've seen a lot of large red water mites in [REDACTED] Pond while snorkeling there. They must not taste good to fish, probably one reason for the red color, as they are both very obvious and swim freely thorugh the water. I did see a water scorpion (Ranatra sp.) sucking on one of them in there, though...

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

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