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.

For how many years, I wonder, have these huge slabs of rock sheltered wild brook trout?

From Mystery Creek # 89 in New York

Stream photos

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

10 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.

Baetis flavistriga computatii

This topic is about the Mayfly Species Baetis flavistriga

This is one of the most widespread and abundant Baetis species, and it may produce fishable hatches under a variety of conditions.

This species is known in angling books by several old synonyms, including Baetis quebecensus, Baetis levitans, Baetis cingulatus, and Baetis phoebus, in addition to the correct name.

Example specimens

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Male Baetis flavistriga (BWO) Mayfly Nymph

Dorsal view of a Male Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the Dosewallips River in Washington

This nymph keys to Baetis assuming the villipore is present (hard to see in my photos or scope), and within that genus it tentatively keys to the flavistriga species complex, of which Baetis flavistriga itself is by far the most common in Washington state, so that's the most likely ID.

1
Baetis flavistriga (BWO) Mayfly Nymph

Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the Kwethluk River in Alaska

5
Baetis flavistriga (BWO) Mayfly Nymph

Dorsal view of a Baetis flavistriga (Baetidae) (BWO) Mayfly Nymph from the East Fork Big Lost River in Idaho

This specimen keys to the Baetis flavistriga complex, which could be either flavistriga or Baetis phoebus.

CaseyP

Arlington, VA/ Mercersburg, PA

Posts: 653

CaseyP on Jan 22, 2007January 22nd, 2007, 12:43 pm EST

pleased to report the emergence of a new baetis flavistriga which i have christened computatii

forum visitors using the Firefox browser who put troutnut.com on their bookmarks toolbar have undoubtedly noticed a tiny dark mayfly icon in a blue box next the bookmark.

well, it's breeding. came back this evening from a week out of town to discover that the little troutnut computatii had a pal over next the hotmail.com bookmark where formerly there was only a generic white icon. am waiting for it to show up next the other two sites that have only generic icons.

now our resident boffins will help me with the Latin ending on the new name, (i tried to use the genitive plural) and then we'll ask Jason how he got these virtual flies to multiply.

Casey

"You can observe a lot by watching." Yogi Berra

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Jan 22, 2007January 22nd, 2007, 4:00 pm EST

Casey-

Hmmm. When I add a Bookmark for Troutnut.com to the Bookmark Toolbar on my Mozilla Firefox 1.5.0.9 browser, the favicon I get looks like this:

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jan 23, 2007January 23rd, 2007, 1:52 am EST

Some sites have them, some don't... they're very particular about their habitat requirements. :)

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Jan 23, 2007January 23rd, 2007, 3:13 am EST

I get the mayfly icon using Mozilla here at home :) , but not when I log on with IE at work. :(

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

--Fred Chappell

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jan 23, 2007January 23rd, 2007, 6:19 am EST

The poor support for "favicons" in Internet Explorer 6 is kind of annoying. The icon will show up in your bookmarks menu if you bookmark the page, but it won't show up in the address bar unless you have the exact address of the current page bookmarked. (For example, even if you have the homepage of Troutnut.com bookmarked, you won't see the icon in the address bar from this forum page -- only from the homepage.)

Of course, using Firefox solves all these problems. :)

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Jan 18, 2009January 18th, 2009, 1:10 pm EST

Casey-

Can't help you with the bookmark icon, but several years ago when I asked Dr. McCafferty how to pronounce the ii ending on packii, I believe he said it was pronounced pack-ee-eye, whereas packi would be pack-eye.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

JAD

Alexandria Pa

Posts: 362

JAD on Jan 19, 2009January 19th, 2009, 2:58 am EST

You might want to check this out Roger---It is pronounced pack-ee-eye in Australin and some of the speakers in the US-- on this helper---http://www.oddcast.com/home/demos/tts/tts_example.php?sitepal --- this is a pretty neat helper I use.

JAD

They fasten red (crimson red) wool around a hook, and fix onto the wool two feathers which grow under a cock’s wattles, and which in colour are like wax.
Radcliffe's Fishing from the Earliest Times,

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Jan 19, 2009January 19th, 2009, 4:40 am EST

John-

Cute. Just wish one (of the menu choices) was "English speaking version of Latinized Greek used for scientific names."

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com