These are atlas moth cocoons which look very fragile. These could be created by using plaster of paris.
Many more photos on this page!
Actias luna cocoons sjh - Pupa - Wikipedia, the free encyclopedia
Urodid moth cocoon held on very thin string!
The Urodid moth spins an incredible open-net cocoon around its pupa not for beauty but for survival. While the weave may seem more vulnerabl.
Caterpillar growth and change: Complete Metamorphosis life cycle study pictures.
˚Abbot's Bagworm Moth cocoon (oiketicus abbotii)
Fiber and Textile, Annemieke Mein, Artist, Textile Sculptures: Case Moth…
Nature's Printer: The Incredible Urodid Moth Cocoon / Smarter Every Day 94