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.
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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.
- 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.
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Crepuscular on Dec 16, 2013December 16th, 2013, 6:35 am EST
In my non fishing life, this is what I do. If you get a chance check this out and see what can be accomplished at a watershed level. It takes many interested and dedicated parties (and funding), but it works. http://vimeo.com/80934305
PaulRoberts on Dec 16, 2013December 16th, 2013, 2:45 pm EST
Very nice video, Eric. Nice to see a green landscape with people on it that can afford to care.
Oldredbarn on Dec 16, 2013December 16th, 2013, 4:37 pm EST
Nice production! This is the kind of positive, practical, results oriented work we need to see. An advertisement for/from the environmentalist community. Don't beat folks over the head and point fingers. Shows them how the little things can add up to something big. It can be done!
Thanks sir! I'm forwarding this link on to some people here in Michigan. A model for how it's done.
Thanks! Eric. Nice stuff.
Spence
Thanks sir! I'm forwarding this link on to some people here in Michigan. A model for how it's done.
Thanks! Eric. Nice stuff.
Spence
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively
"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
Crepuscular on Dec 16, 2013December 16th, 2013, 5:54 pm EST
Very nice video, Eric. Nice to see a green landscape with people on it that can afford to care.
Thanks Paul. I hear what you're saying and yes we take a lot for granted here.
Crepuscular on Dec 17, 2013December 17th, 2013, 2:39 am EST
Nice production! This is the kind of positive, practical, results oriented work we need to see. An advertisement for/from the environmentalist community. Don't beat folks over the head and point fingers. Shows them how the little things can add up to something big. It can be done!
Thanks sir! I'm forwarding this link on to some people here in Michigan. A model for how it's done.
Thanks! Eric. Nice stuff.
Spence
Thanks Spence. The people at PSU did a really nice job with the video. I just do the bugs, coordinate some streambank restoration and manage some people for that particular project, but it really does illustrate what can be accomplished when there are enough parties that are willing to work together toward a common goal. We definitely benefit from being in the Chesapeake Bay Watershed, some funding is there do actually do some work.
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