Here's a timely sulphur usual pattern tied by Tim Flagler, where he employs CDC for the body of the fly instead of dubbing. The CDC body gives the fly buoyancy and it will also retain its color when wet, which is a plus. Often dyed hair dubbed bodies will darken considerably when they get wet, loosing the typical primrose color that matches the natural.
The sulphurs, or pale evenings duns, are just starting to hatch in good numbers here in New Jersey, and you will likely be seeing them by the weekend up in the Catskills and Upper Delaware system.
Time some up and sharpen your hooks!