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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.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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.

Lateral view of a Female Cheumatopsyche (Hydropsychidae) (Little Sister Sedge) Caddisfly Adult from unknown in Wisconsin
Litobrancha
Knoxville TN

Posts: 51
Litobrancha on Sep 23, 2006September 23rd, 2006, 11:08 am EDT
looks like a cheumatopsyche female.

[edited by Troutnut: added title]
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Sep 23, 2006September 23rd, 2006, 11:49 am EDT
Nice set of caddisfly identifications, Lito! Help me out with this one. To my layman's eye the shape of the wing indicates Hydropsychidae as the probable family, and the color of the body (absent a size reference) suggests that Cheumatopsyche is the likely genus.

What other cues do you see? Keep in mind that my out-dated Internet Explorer overprints half of the pictures I'm seeing. Thanks.
Troutnut
Troutnut's profile picture
Administrator
Bellevue, WA

Posts: 2758
Troutnut on Sep 23, 2006September 23rd, 2006, 1:46 pm EDT
Thanks for all the help! I just went through them all and updated the specimens to fit the IDs you gave.

Gonzo -- Are you using Internet Explorer 5.something still? (You can check by going to the Help menu at the top of the window and selecting "About Internet Explorer.") You should really upgrade!

IE5 is a nightmare for web designers because it renders some things differently. It's really a nightmare even to make a web page like this play nicely with the different up-to-date browsers. IE5 is a whole other level of hell from a web programmer's standpoint, so I decided not to mess with it. I checked my stats and less than 1% of my visitors use it.

Anyway, that's a very off-topic rant. If you'd like some help upgrading send me a private message and I can point you to the right downloads.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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