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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington
This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their 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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Zugbuggin
Douglasville, Ga

Posts: 3
Zugbuggin on Mar 9, 2012March 9th, 2012, 3:29 pm EST
Do Early Blacks hatch as traditional Stoneflys do by crawling out of the water before shedding the nymph shuck or do they hatch as most Mayflies do by swimming to the surface and sheading the nymph shuck at the surface or like Quill Gordons do sheading the nymph shuck on the bottom then swimming to the surface??? I have heard all three several times just wanting to know which is true.
Wiflyfisher
Wiflyfisher's profile picture
Wisconsin

Posts: 622
Wiflyfisher on Mar 9, 2012March 9th, 2012, 3:50 pm EST
They crawl out of the water, or right along the shoreline. I have never heard of a stonefly that hatches in the water like mayflies. See Troutnut's stonefly section http://www.troutnut.com/hatch/13/Insect-Plecoptera-Stoneflies.

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