Header image
Enter a name
Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives

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.

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.
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.

Gripngrin has attached this picture. The message is below.
Copyright ©2005 Mike Speer 
Brown Eye - Caught on the lower Blue River near Kremmling, Colorado.
Front Range - Colorado

Posts: 17
Gripngrin on Dec 6, 2006December 6th, 2006, 1:06 pm EST
Jay & All,

Everybody who visits the photography thread should check out Pat Clayton's work.

Go to: http://www.fisheyeguyphotography.com

Stunning underwater work. Several shots show him underwater in a full wet suit!

I have tried to correspond with him concerning gear, techniques, etc, but like many pro shooters, he is seems reluctant to share.

Enjoy his pics.


Grip'n Grin Mike
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Dec 6, 2006December 6th, 2006, 3:00 pm EST
Yes, his photos are amazing! I've got him in the "Recommended Links" section on the links page of this site. I think he has developed some unique techniques nobody else has tried to photograph trout in streams. I bet he makes good money selling prints, so it's no surprise he's a little quiet about how he does it.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Quick Reply

Related Discussions

Last Reply
Apr 13, 2009
by Trtklr
Oct 19, 2006
by Shawnny3
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy