Reflecting mesh objects
You can use the reflect tool and other tools in the toolbox on a mesh object just like any other type of object. Now you'll reflect a copy of the two wing parts to complete the butterfly.
Select the selection tool () in the toolbox, and Shift-click to select both the tail wing and the forewing on the bottom butterfly.
Select the reflect tool () from the same group as the rotate tool () in the toolbox, hold down Alt (Windows) ...