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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.

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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Btbo32 has attached this picture to aid in identification. The message is below.
Btbo32
Posts: 13
Btbo32 on Nov 18, 2017November 18th, 2017, 11:06 am EST
Can anyone please help me identify this nymph? I noticed this as I was zooming in on the maccafertium nymph. Found in North Jersey (Big Flatbrook) last month. Thanks!
Jersey Boy
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Nov 18, 2017November 18th, 2017, 5:18 pm EST
I'd suggest putting nymph on a white background and taking a larger photograph for identification. Our bug guys are good, but they may not be able to make out enough detail on the one posted here. A big white plastic cap from a cat litter jug would make a good background, or any lid with a white inside. Adding a little water might make the legs, tails, etc. stand out more.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Taxon
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Site Editor
Plano, TX

Posts: 1311
Taxon on Nov 19, 2017November 19th, 2017, 7:52 am EST
Hi Btbo32-

Based on (what I can see of) the body shape outline, my guess would be Isonychia.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Btbo32
Posts: 13
Btbo32 on Nov 19, 2017November 19th, 2017, 11:18 am EST
I know sorry it was the best image I could get. Thank you very much! I appreciate the help.
Jersey Boy
Btbo32
Posts: 13
Btbo32 on Nov 19, 2017November 19th, 2017, 11:21 am EST
That's a wonderful idea! I will bring one on the water next time I get out. Thanks for your help!
Jersey Boy

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