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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 Ephemerella mucronata (Ephemerellidae) Mayfly Nymph from the Yakima River in Washington
This is an interesting one. Following the keys in Merritt R.W., Cummins, K.W., and Berg, M.B. (2019) and Jacobus et al. (2014), it keys clearly to Ephemerella. Jacobus et al provide a key to species, but some of the characteristics are tricky to interpret without illustrations. If I didn't make any mistakes, this one keys to Ephemerella mucronata, which has not previously been reported any closer to here than Montana and Alberta. The main character seems to fit well: "Abdominal terga with prominent, paired, subparallel, spiculate ridges." Several illustrations or descriptions of this holarctic species from the US and Europe seem to match, including the body length, tarsal claws and denticles, labial palp, and gill shapes. These sources include including Richard Allen's original description of this species in North America under the now-defunct name E. moffatae in Allen RK (1977) and the figures in this description of the species in Italy.
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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This discussion is about the Neversink River.

Neversink Gorge (Wolf Brook) in New York
You've really got to see this one full-size to enjoy it.  It's my first attempt at a 360 degree panorama stitched together with the latest and greatest version of Adobe Photoshop.

From the Neversink River in New York
Neversink Gorge (Wolf Brook) in New York
The Neversink River in New York
Bozone
Bozeman

Posts: 1
Bozone on May 13, 2008May 13th, 2008, 5:55 am EDT
Hey, I come out to Mahwah NJ every year from Bozeman MT to visit my in-laws and this year i get a hall pass for the day (fathers day). I am willing to drive to the Neversink Gorge but i have no idea where to really go. So anyone out there know that area? Help a brother from MT and the favor will be returned should any of you make it out to this area.
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on May 14, 2008May 14th, 2008, 11:37 am EDT
Bozone, if I knew one end of the Neversink from another I'd be glad to tell you what I know. But I don't, having never fished it. So, I'd recommend that you call some local fly shops in the area and ask them. Sorry I can't be of more help.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on May 15, 2008May 15th, 2008, 2:18 pm EDT
It's pretty easy to figure out. There are only two ways into the gorge. I've always gone in the north path. Several good pools are pretty close to where the trail goes near the river. Be really careful about crossing, and don't even try unless the water is pretty low. It's very slippery and fast, and deceptively deep when it's clear. If you don't cross, there are some steep bluffs you can't really get past on the near side, so you'll be limited, but you can have a fun day working the pools you can get to.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on May 16, 2008May 16th, 2008, 12:51 am EDT
With the rain we have been getting in the Northeast it possibly won't be low. Good luck and tight lines.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Scarr25
Scarr25's profile picture
Oakland, NJ

Posts: 1
Scarr25 on Jun 10, 2015June 10th, 2015, 12:25 pm EDT
Hello! I know this is an old post and not sure if you still are connected to it and if you still come out to NJ. I live in Oakland, next to Mahwah. I know the Neversink a bit although I've never fished the gorge. I also know the Delaware and Beaverkill. If you have any plans on coming out I'd be happy to show you around these streams.

Steve

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