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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Kogotus Stonefly Nymph Kogotus Stonefly Nymph

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington

This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.

8 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.

Identification: Cheumatopsyche

Female Cheumatopsyche (Little Sister Sedge) Caddisfly Adult

3 Pictures

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

Collected May 15, 2004 from unknown in Wisconsin

Added by Troutnut on January 25, 2006

Collected May 15, 2004 from unknown in Wisconsin and added by Troutnut on January 25, 2006

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

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