whatfly,
The guys at Lord's of the Fly just labeled it "Crippled Caddis". I saw this pattern on a site,with a lot off different fly listings, maybe ten years ago, but neglected to save the link. One of my FB tier friends thought that it may have been created by Mike Lawson. I did a search but could not find it related to his name or patterns...in any case...it isn't one of mine.
There is a company in Kenya that has a similar tie, but I got my first bunch well before they ever existed and a couple of the samples I bought (that I didn't take apart) still fish well. Most of the stuff from Kenya starts to disintergrate after the first fish:
http://www.tyingflyfishingflies.com/...dry-flies.html
PT/TB