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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Grammotaulius betteni (Northern Caddisfly) Caddisfly Larva Grammotaulius betteni (Northern Caddisfly) Caddisfly Larva

Dorsal view of a Grammotaulius betteni (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington

This is a striking caddis larva with an interesting color pattern on the head. Here are some characteristics I was able to see under the microscope, but could not easily expose for a picture:
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.

12 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.

Not Trout, Salmon, or Grayling

Report at a Glance

General Region	Ozark Foothills (Missouri)
Specific Location	small warm-water pond
Dates Fished	4/6/11
Time of Day	evening (right before dark)
Fish Caught	bass and bluegill
Conditions & Hatches	air temp 75, water temp upper 50s, fish going crazy on the surface for a mixed hatch of warm-water stuff

Details and Discussion

Motrout

Posts: 319

Motrout on Apr 7, 2011April 7th, 2011, 9:37 am EDT

Ok, this report technically doesn't belong on here, because it is not about trout fishing, but it does involve fly fishing, specifically dry fly fishing so I thought it would be alright. Yesterday, the moment came that I had been waiting for for a long time-when the bass and bluegill on the pond across the road started going crazy on topwater stuff. Earlier on in March before we got another cold spell at the end of the month, I had taken a few bluegills on top, but it had been pretty slow all said. Last night, it was a take on about every other cast, and not only bluegill but some pretty decent bass too. Deer-hair panfish bugs were the key. It was about the most beautiful evening of fishing I have ever had, with the dogwoods in full bloom and all kinds of wildflowers lining the banks of the pond. A very nice evening to get out. I kept hooking up until it was almost completely dark, a sure sign as any that the season is on. What a difference from just one week ago when there was 3" of snow on the ground. Crazy weather indeed.

I am headed down to the Ozark National Scenic Riverways (the Current River's Blue Ribbon stretch specifically) this weekend for a three day camp-trip, and when I get back I will have a real trout fishing report. But for now I hope you didn't mind me straying a bit into the warm-water category.

"I don't know what fly fishing teaches us, but I think it's something we need to know."-John Gierach
http://fishingintheozarks.blogspot.com/

Jmd123

Oscoda, MI

Posts: 2474

Jmd123 on Apr 7, 2011April 7th, 2011, 4:05 pm EDT

Hey MO, if the rest of them don't like it, we will just have to start our own website and call it bassnbluegillnut.com...

Jonathon

P.S. My own warmwater "opener" is about two weeks away - I CAN'T WAIT!!!

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

Troutnut