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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

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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Report at a Glance

General RegionNortheast lower Michigan
Specific LocationPine River
Dates FishedMay 8, 2013
Time of Day2;00 - 5:00 p.m. (approx.)
Fish Caught4 little rainbows, 2 little brookies
Conditions & HatchesBright, sunny, slight winds, upper 60s to low 70s F; water lower and clear; a smorgasbord of hatches (see below), none heavy; no visible feeding fish

Details and Discussion

Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on May 8, 2013May 8th, 2013, 5:20 pm EDT
Well, what a difference a week makes! Last Wednesday this water was DEAD, now it is slowly coming back to life as far as trout fishing is concerned. I saw quite a variety of hatches today:

larger mayfly, size 12, likely Light Hendricksons, just a few;
smaller mayfly, size 16 or so, possible BWOs?, a few here and there;
larger caddis, size 12, grayish, very few;
smaller caddis, size 16 or so, tannish, most abundant but still not very many; and
some kind of good-sized stonefly, like a #10, gray wings and dark (black?) body, only a couple of them.

Flies tried: Adams #12; EHC tied in Early Brown Stonefly colors (dark brown body, brown hackle, greyish wings), size 12; EHC in tannish brown, size 16; Light Hendrickson, traditional pattern, size 12; and two #10 Woolly Buggers, one in mottled brown/grizzly and the other a POG (peacock, olive, and grizzly) Bugger, both with large black bead-chain eyes.

Got one or two on the Adams and the rest on the #16 caddis, no hits on the Woollies. I didn't see any fish feeding today but flies presented in the right holes and pockets drew strikes from smaller fish, six of which got themselves stuck on my hooks. No larger fish in evidence, but the hatches were probably not strong enough yet to bring out the bigger ones (why risk being eaten by an eagle or heron for a few measly little bugs? Of course, the smaller ones are dumber...). I expect them to show themselves once the hatches pick up in intensity over the next couple of weeks. It sure felt good to catch something!

I did also see one dark looking steelhead, about 20-24", cruising slowly through a deep pool in plain sight, apparently unconcerned about me...

Jonathon

P.S. Tomorrow is kayak flyfishing for brookies on [REDACTED] Pond!
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on May 8, 2013May 8th, 2013, 7:40 pm EDT
Well done, Mack! Always fun to find bigger trout in smaller waters! I will update you on the pond fishing (and any hatches I see) tomorrow.

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on May 8, 2013May 8th, 2013, 8:11 pm EDT
Thanks, Mack. This particular pond has yielded brookies up to 13" for me so far. I hit it on the opener and it was pretty dead, got just three little guys on a half-hearted caddis hatch in the evening. Hoping for some heavier hatching tomorrow, or at least some good solid strikes on my Woolly Buggers!

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Tigermidge
Lakewood, Ca.

Posts: 10
Tigermidge on May 12, 2013May 12th, 2013, 2:05 pm EDT
growing up in Flint ALL I did was carp fish the flint river. Oh and fish lake Huron with my Grandfather.
Now I took up fly fishing 10 years ago and I read all these posts about places I used to go and do nothing much but drink and raise a little.

Oh well there is always the Pacific Ocean to fish I guess...

Mark the water flogger.
It's impossible to explain the attraction except to say that steelheading is like golf: viewed objectively , it makes no sense, but some people like it.

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