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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 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.
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.
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Flyman2
Posts: 5
Flyman2 on Jan 21, 2015January 21st, 2015, 6:44 pm EST
Has anyone used pseudo marabou? If so, did it work well? How did it tie? Does it move well in the water?
Wbranch
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Jan 22, 2015January 22nd, 2015, 2:28 am EST
Never heard of it and since authentic marabou is so cheap, and effective, why would you want to use something else?
Catskill fly fisher for fifty-five years.
Roguerat
Roguerat's profile picture
Posts: 456
Roguerat on Jan 22, 2015January 22nd, 2015, 10:01 am EST
The only thing that comes to mind is 'chickabou', a natural material and pretty much the same as marabou...

Roguerat
Kschaefer3
Kschaefer3's profile picture
St. Paul, MN

Posts: 376
Kschaefer3 on Jan 22, 2015January 22nd, 2015, 10:05 am EST
Never heard of it and since authentic marabou is so cheap, and effective, why would you want to use something else?

I agree, and use authentic marabou...a lot! The reason one may want to use sythetics would be durability. Many folks I know who tie with a lot of synthetics state that durability is a main factor.

That said, I have never used synthetic marabou, and doubt it can have the same movement as authentic marabou.

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