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.
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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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Report at a Glance
| General Region | New Hampshire's Lake Region |
| Specific Location | Mountain Streams |
| Fish Caught | Looking for Brookies and Rainbows |
Details and Discussion
CamWolf1313 on Jun 15, 2008June 15th, 2008, 1:51 pm EDT
I have a lake-house in Andover NH and there are trout in the lake but i have always loved stream fishing. I was wondering if anybody had suggestions where to fish and using what types of flies? Any little bit of information for any part of New Hampshire because i don't mind driving for fish.
"Clear your mind of everything but the fish and the fly and you will be in the right mind frame to land it"
Billy Berger.
Billy Berger.
Vermonter
Posts: 15
Posts: 15
Vermonter on Jun 19, 2008June 19th, 2008, 1:47 am EDT
Connecticut river!!!!!!!!!!!
Wbranch on Jun 25, 2008June 25th, 2008, 1:59 am EDT
I don't know where Andover is in relation to Conway and Gorham but you could try the Swift river which flows west to east and joins the Saco near Conway. Then there is the Ellis River near Jackson, the Peabody River near Mt. Washington, and the Androscoggin River which starts up in Errol and flows south through Milan, Berlin, and Gorham before it hooks back into Maine.
Catskill fly fisher for fifty-five years.
Mcjames on Jun 25, 2008June 25th, 2008, 5:50 am EDT
what about Adironacks? is that drivable
I am haunted by waters
CamWolf1313 on Jun 26, 2008June 26th, 2008, 3:34 pm EDT
For where I am in new hampshire the Adironacks on about a 3 hour drive but they are close to some relatives and i am planning to take a trip this summer.
"Clear your mind of everything but the fish and the fly and you will be in the right mind frame to land it"
Billy Berger.
Billy Berger.
Zhoule
Posts: 1
Posts: 1
Zhoule on Jul 22, 2008July 22nd, 2008, 9:42 am EDT
CamWolf1313
Dude, check out the Connecticut river in Pittsburgh NH. The "Trophy Stretch" is particularly attractive from late April (beware of deep water) to october.
Dude, check out the Connecticut river in Pittsburgh NH. The "Trophy Stretch" is particularly attractive from late April (beware of deep water) to october.
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