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> > Probably Pteronarcys biloba

The Specimen

The Discussion

GONZOOctober 4th, 2006, 3:12 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
Everything seems consistent with P. biloba, the "Knobbed Salmonfly." Unlike dorsata, it is usually found in small streams and headwaters where it is a real mouthful for the little trout. Typical salmonfly nymph ties tend to be likewise, so I usually choose to imitate the younger, smaller generations of nymphs.
TroutnutOctober 4th, 2006, 3:58 pm
Bellevue, WA

Posts: 2737
Thanks. I've added a page for P. biloba with that information and changed the specimen's ID accordingly.

What's your source for the information? I still need to find a good source on stoneflies. I haven't tried hard yet since I've been focusing on mayflies, but it would be good to know where to start.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
GONZOOctober 4th, 2006, 5:02 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
Unfortunately, I'm not aware of a really good, up-to-date angler's book on stoneflies. The species I've identified today are ones I know well from personal experience.

I like Stoneflies for the Angler by Leiser and Boyle (Knopf, 1982 and Stackpole paperback reprint, 1990). It was accurate and well-researched for its day and is a good general angler's reference; but it lacks any systematic keys. There's also an Arbona stonefly book that I haven't seen or read.

And to answer your question from the other thread, I haven't come across a recent species level description of Epeorus that would be of any help.

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