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.

Waterfalls over smooth bedrock above Titcomb Lakes

From Titcomb Basin in Wyoming

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.

17 Recently Added Photos

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.

new fish in the river

Uffkev

Pretoria South Africa

Posts: 4

Uffkev on Dec 3, 2015December 3rd, 2015, 7:38 pm EST

Hey everyone , just a quick post to just say it's a privilege to be here and I really love the posts . I'm not to great with introductions however I'm Kevin from sunny South Africa and I think I was born with a fly rod In my hand ????, basically fly fished competivley for 4 years for my home province and been invited twice for junior protea trials. I'm a bit older in college now but the love for the sport never died . We recently began a YouTube channel to help get the sport noteriety and to just say to the general public how wrad fly fishing can be .If you're interested go take a look at uncharted fly fishing ????.

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Dec 3, 2015December 3rd, 2015, 8:31 pm EST

Nice informative intro, Kevin. Welcome aboard.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Dec 3, 2015December 3rd, 2015, 8:43 pm EST

Welcome, Kevin, That's quite a beast in your photo. Could you tell us a bit about it? Taken on the fly?

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

Uffkev

Pretoria South Africa

Posts: 4

Uffkev on Dec 4, 2015December 4th, 2015, 4:06 am EST

That beautiful 90kg specimen was caught in a mountainous lake in phuket Thailand. I was using a 12wt guide series and a rio tarpon intermediate line . Funnily enough I used a self tied whistler quite common for Tigerfish but I just supersized it ha ha .

Wbranch