The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
I think you have the right idea, I tie it with Golden stone fly dub with a peacock head size 18 and 20 .
John
They fasten red (crimson red) wool around a hook, and fix onto the wool two feathers which grow under a cock’s wattles, and which in colour are like wax.
Radcliffe's Fishing from the Earliest Times,
I've had some luck with a small 18 quill larva. It appears somewhat tannish --with a brown head and ginger hackle. I'm not sure if it's the pupa for the chimmara but it 's gotten some fish during the time thses flies are to be expected. I used stems from hen hackles for the body. TZ
Frankcoz, as a good general rule, the body color of a caddisfly pupa will be about the same as that of a freshly hatched adult. This is because what fly fishers call a "pupa" is technically a pharate adult. However, it is also good to keep in mind that caddisfly adults often darken considerably over time, so "aged" specimens shouldn't be used as models for pupal patterns.
Peregrines on Apr 5, 2012April 5th, 2012, 8:59 am EDT
A couple years too late for the original poster by for others that might be curious....
As Gonzo points out emerging pupae have the color of the adult. For imitating the Chimera hatch LaFontaine recommends:
Larva: Yellow caddis larva
Pupa: Black Deep or Black Emergent Sparkle Pupa
Adult: Black Dancing Caddis or Thompson's Foam Caddis
Egg layer: Black Diving Caddis
Entoman on Apr 5, 2012April 5th, 2012, 11:08 am EDT
Mark,
As Gonzo points out emerging pupae have the color of the adult
You left out a very important part of that quote. Freshly hatched adults are very different in color from the adults that have been around awhile. It's the latter trout usually see most often.
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman