Fly identity ?

A locally popular dry fly is a take-off on a standard, as most are. I'm wondering if is a new pattern or not. It starts as a classic Royal Coachman but has no wing. Instead it has a white hackle added in front of the usual brown one. Does this already have a name? Thanks.

Ray,

Old rod builder from Sayre, PA (he since passed away) used that fly almost exclusively on Schrader Creek. It's in north central PA. Royal Bivisible.

Personally, I've not used it.

Allan