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.
Featured on the forum
This is a striking caddis larva with an interesting color pattern on the head. Here are some characteristics I was able to see under the microscope, but could not easily expose for a picture:
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.
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Wbranch on Mar 24, 2008March 24th, 2008, 9:23 am EDT
Where does Jason get these banner photo's? Today is the bridge over the Beaverkill below Horton. The Cemetery Pool is upstream and slightly to the left.
Catskill fly fisher for fifty-five years.
Troutnut on Mar 24, 2008March 24th, 2008, 9:44 am EDT
They're all taken from the landscape pictures section of this site, cropped to fit the banner spot at the top.
If I can find the time, I've got a LOT of great banners from Alaska to add! First I have to crop the pictures, add them to the site, etc. Grad school is keeping me busy.
If I can find the time, I've got a LOT of great banners from Alaska to add! First I have to crop the pictures, add them to the site, etc. Grad school is keeping me busy.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Troutnut and salmonid ecologist
Shawnny3 on Mar 24, 2008March 24th, 2008, 10:34 am EDT
Nah, stick with the NY photos.
-Shawn
-Shawn
Jewelry-Quality Artistic Salmon Flies, by Shawn Davis
www.davisflydesigns.com
www.davisflydesigns.com
Troutnut on Mar 24, 2008March 24th, 2008, 12:23 pm EDT
I won't be taking any of the current photos (including the NY ones) out of the rotation... but Alaska's definitely going on there!!
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Troutnut and salmonid ecologist
Martinlf on Mar 24, 2008March 24th, 2008, 12:37 pm EDT
Sounds good to me Jason. You obviously have an eye for nice shots.
"He spread them a yard and a half. 'And every one that got away is this big.'"
--Fred Chappell
--Fred Chappell
Wbranch on Mar 24, 2008March 24th, 2008, 12:46 pm EDT
Jason,
You need a helper for the ongoing site projects.
You need a helper for the ongoing site projects.
Catskill fly fisher for fifty-five years.
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