The Rusty spinner is named due to the rusty colored body used to tie the fly pattern. As it turns out, the spent mayfly of a number of species turns a rusty color regardless of the original body color. Thus, the Rusty Spinner imitates a number of mayfly species.
The White Wulff is the perfect pattern to imitate the Eastern Green Drake mayfly spinner. While this fly carries the namesake of the iconic fly tier Lee Wulff, it was actually developed in 1929 by Walt Dette and Ted Townsend as the Coffin Fly.