thanks a lot for your interest in this shot. It's very articifical, I know, many TN guys don't like that. To answer your question: the pupa was cut out of it's cocoon, glued to a wooden stick at its abdominal tip, the stick glued to the curved cardboard that served as background and bottom. The pupa therefore stands freely. The stick (and its shadow) were removed with Photoshop! By the way, the moth cannot get rid off its pupal cuticle without some support to cling to.
Hyalophora cecropia (14)