Gluing a pupa or chrysalis that has either fallen or been removed can be intimidating the first time. How much glue? How far down the chrysalis is safe? (A butterfly makes a chrysalis, also called a pupa, not a cocoon.)
The guideline is easy. Just don't glue the pupa upside down
! If you do, you've glued it shut and the butterfly cannot emerge.
These rascals are easy to reattach with glue
The chrysalis can be attached with glue almost to the tip of the pupa and it will not hurt IF it is not upside down!