Ancestor Moth Wing - Can be acquired by harvesting Ancestor Moths that have landed on plant surfaces.A category listing of all new items added by Skyrim's Dawnguard add-on can be found here.
Most new items added by the Dawnguard add-on do not have their own individual pages, but are instead added to the appropriate preexisting page (i.e., all new vampire equipment is added to Specialty Gear). Only minimal summary information is provided on this page please use the links provided for details on each individual item. This page documents the new items added by the Dawnguard add-on.