Repair a Papilio wing

I do it in two ways depending on size of repair and the particular situation.

With a general tail repair with a normal-sized piece, I cut the replacement a tad larger than spot being onto and glue it from underneath with a pre-made mixture of 50% Elmer's Glue and 50% Isopropyl alcohol. This glue is nice because it dries slowly so one has time to adjust if needed and when it dries, only the thinnest film of glue does the job (less shows....if any).

If the tail is very thin like in O. paradisea/O. meridionalis, I glue a single piece of stiffer-than-limp paintbrush hair on the underside from the base of the repair spot outward to where the replacement tail will go. After it is dried (a few minutes), dab it with the same glue mixture on the top that extends out from the wing where the replacement piece will go and simply rest the replacement piece ontop of the hair. Not much glue is ever needed...use tiny drops.

This is done with a fully mounted dried specimen, for relaxing it later would undo the glue job.

Anytime repairs are done/tried for the first time, practice on a non-essential specimen

Hope this helps. Good luck and do tell us all how things worked out.