At first glance, this might look a bit like the CDC & Elk Caddis pattern. However, the body is tied quite differently.
Marc Pettijean's video (on-line) in which he demonstrates the use of his "magic tools" ties a nice, simple caddis pattern completely of CDC. He forms a split-thread dubbing loop and inserts CDC. Then, he wraps the spun CDC forward. He clips the underbody and clips the tail in a Caddis shape.
I really like the simplicity of his tie. However, I like a little more definition to the wing, so I add a light over-wing of deer hair.
Could have done a better job of trimming the underneath......