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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.

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington
This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.
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.
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Catskilljon
Upstate NY

Posts: 160
Catskilljon on May 4, 2014May 4th, 2014, 3:14 pm EDT
The weather is improving, temps warming slightly, rivers receding...all in all a bright outlook for spring! I fished Saturday afternoon on a couple different streams. an hour on one, and a couple on the next. I probably would have been better off staying in one place and working the area over, but I was looking for the Hendricksons and when they were not there, I moved. I'll tell you what there are a lot of everywhere and that's tiny caddis, tan around a size 18. Those things were downright prolific, but with the water temps still down no fish were looking up. I found water temps in the high 40*s on most of the streams and 54* on the other.

At around 6:00pm on a trib to the main stem of the Delaware I found myself standing under hundreds of Hendrickson spinners, most with eggs and hovering around 20ft above the water. Every once in a while one would fly low enough for me to see them clearly, but I didn't see any on the water and still no fish rising anywhere. I should mention that this particular body of water runs a little warmer than most of the others in that area and the hatches are typically 2 weeks earlier there. I did take a few fish on wet flies dead drifted and then left swinging downstream, I suppose they were keying in on emergers. Landed 5 all together, missed a few on those downstream takes but it was a great few days up there.

A few shots...

12" rainbow... < />

How do these things fly carrying that many eggs! < />

14" wild brown, last fish of the day... < />

Looks like we have entered the fishing zone, wont be long before the rivers are loaded up with anglers!
CJ
Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on May 5, 2014May 5th, 2014, 8:13 am EDT

How do these things fly carrying that many eggs! < />


Hi John-

I should know better than to respond to a rhetorical question, but the answer is quite well, as the spinner stage of a female mayfly is absent digestive organs, which would presumably weigh approximately the same as all those eggs. :-)
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Stokes
Columbia county,NY

Posts: 76
Stokes on May 5, 2014May 5th, 2014, 4:43 pm EDT
Glad to hear things are settling down up there,finally.I'm heading up to the West Kill and maybe the upper stretch of the Esopus tomorrow and wednsday.May check out Woodland Creek if I find time.First time out this year,I'm psyched.
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on May 5, 2014May 5th, 2014, 6:00 pm EDT
Glad to hear you're getting out, Carl. You've had a heck of a winter.
Stokes
Columbia county,NY

Posts: 76
Stokes on May 5, 2014May 5th, 2014, 6:40 pm EDT
Thanks,Paul,really looking forward to it.
Stokes
Columbia county,NY

Posts: 76
Stokes on May 8, 2014May 8th, 2014, 5:56 am EDT
So,on Tues I decided to explore a creek closer to my home base in Dutchess county.I went to the Wassaic creek and Swamp River.The water was still quite high on the Wassaic,about 4-5ft deep at the access point so I went to the Swamp river nearby.Got one small stocked brown,saw no bugs at all.On wendsday I went to Woodland Creek,a trib of the Esopus,in the morning.Small creek that is pretty steep where I was,so it was some fast water with some surprisingly deep small pockets.I had caught a few brookies there last fall but nothing this day.About lunch time I headed up to the West Kill,fished about a half mile or so stretch up near Spruceton,no bugs no fish.Water is still kind of cold,but not uncomfortble to stand in with non-insulated waders.Weather was absolutely perfect,but the fish didnt thinks so,maybe next time.

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