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.

A small spring creek in Wisconsin. A little brook trout stream tumbles over boulders

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Female Sweltsa borealis (Boreal Sallfly) Stonefly Adult Female Sweltsa borealis (Boreal Sallfly) Stonefly Adult

Lateral view of a Female Sweltsa borealis (Chloroperlidae) (Boreal Sallfly) Stonefly Adult from Harris Creek in Washington

I was not fishing, but happened to be at an unrelated social event on a hill above this tiny creek (which I never even saw) when this stonefly flew by me. I assume it came from there. Some key characteristics are tricky to follow, but process of elimination ultimately led me to Sweltsa borealis. It is reassuringly similar to this specimen posted by Bob Newell years ago. It is also so strikingly similar to this nymph from the same river system that I'm comfortable identifying that nymph from this adult. I was especially pleased with the closeup photo of four mites parasitizing this one.

15 Recently Added Photos

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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Source of Tyvek?

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jan 28, 2007January 28th, 2007, 7:23 am EST

I'm anxious to try out some of the Tyvek fly patterns in Gonzo's book, so I've kept an eye out for Tyvek for the last few months and haven't found a source. They have it at the hardware store in rolls costing around $60 for enough Tyvek to tie about 100 million flies. I see it all the time on construction sites, but I don't want to poke around there cutting little pieces off somebody's house.

Anyone know of a cheap and easy way to find it?

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Jan 28, 2007January 28th, 2007, 9:35 am EST

Mailing envelopes. Check the post office, Staples, Office Depot etc. to find some. I get things mailed to me in it from time to time, and always save the envelopes. If you don't find any, send me a PM and I'll arrange to send you a sheet. A little goes a long way unless you're tying up a storm.

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

MisterChubb
Posts: 1

MisterChubb on Feb 23, 2007February 23rd, 2007, 2:43 pm EST

Tyvek is made by dupont. You can order free samples of Tyvek. They send you 5-6 large envelope examples which will last you a long time. Search on Google for "Dupont Tyvek" Hope that helps.

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Feb 23, 2007February 23rd, 2007, 3:55 pm EST

I ended up buying some envelopes at Staples. Good stuff!

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist