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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington
This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
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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Millcreek has attached these 7 pictures to aid in identification. The message is below.
Female. November 11, 2013.
Female. October 29, 2013.
Female. October 29, 2013.
Female molting. November 14, 2013.
Female. November 21,2013.
Male. November 14, 2013.
Male. January 23, 2014.
Healdsburg, CA

Posts: 344
Millcreek on Aug 26, 2014August 26th, 2014, 7:47 pm EDT
Figured since there was a fair amount of discussion about Baetis nymphs lately I'd post these photos. They're all of the same species.

I've been able to key these nymphs to Baetis but have no idea which species they are. Any suggestions welcomed.

All were taken out of the Russian River. The nymphs range from 5.5-6.5 mm in length (excluding cerci). The date each photo was taken is under the photo. All specimens were alive when the photos were taken.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

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