Angler Dave,
I believe from the notes I have in the bottome of the draw with the Ligas dubbing is that it is for nymphs / emergers. All of the packs I have were purchased in the mid 90's from a local shop that was closing. At the time there were rumors that the company was going to change the dubbing. All of the packs I have have Ligas inc. Boulder Colorado on them and are listed as unltratranslucent dubbing material. When I started working in a local shop in 97 I tried to source it but only could find the scintilla dubbing. I am lucky I have multipule pack of each color and I treat them like gold as they tie some very effective caddis and mayfly nymphs.

steve