Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Stream photos

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Ephemerella mucronata Mayfly Nymph Ephemerella mucronata Mayfly Nymph

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.

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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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

JONATHON IS BACK!

Jmd123

Oscoda, MI

Posts: 2474

Jmd123 on Jun 30, 2009June 30th, 2009, 12:40 pm EDT

Hey folks, don't know if any of the guys I used to chat with are still on here, but I FINALLY got around to buying myself a new computer and getting back online after a long hiatus. Now living in Troy, MI with my folks (partially for economic reasons, partly because they're both 76 and, how shall I say, need some heavy lifting now and then), I am saving $$$ not paying Ann Arbor rent but giving up some privacy so, obviously, I have been fishing A LOT this year. Most of which has taken place in a local lake in which the crappie started hitting chartruese woolly buggers a week after the last ice finally went out! Plus lots of bluegill (now finishing up spawning, biting best on a size 12 black, yellow, and red "firefly" - not the pattern in the catalogs, this is from an old book on panfish and bass flies), plenty of bass (mostly maxing out at 12-13" but one 5-pounder threw the hook on me a couple of months ago), and even the occsasional yellow perch. The aformentioned chartreuse woolly bugger (size 10 Mustad #9672, Krystal Flash tail topping, weighted underbody, and grizzly hackle tied at the head & wrapped back before being counter-wrapped by silver wire tied at the hook bend - that's how I always tie 'em) has been the best (my very best warmwater fly EVER), followed by my Killer Bass Flies (#10) in silver/gray or chartreuse (also, chartruese & silver - new variant). I've also been to the Huron River in Ann Arbor (smallies, rock bass, & bluegills) and Cooley Lake fishing off my friends' dock (16" largemouth, rock bass up to 11", and sunfish up to 9"). Next week I plan on going "hexing" up in the Maple River, my old stomping grounds from my UMBS days. Also, picked up an 8-weight outfit from Cabelas & fresh ingredients for BIG pike flies, which I need to also test up in the north country (or on Lake St. Clair for muskies?).

I will soon be purchasing a digital camera for fish porn (waterproof, obviously) and some illustrated step-by-step instructions for some of my own original fly patterns, KBFs included. Stay tuned...

Jonathon

P.S. Any Hex reports from you Michigan guys??

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

Martinlf