folded from a 30 cm square of foil-backed mulberry paper.
For your information, these beetles are life-sized. I saw some Hercules beetles on TV once, they are really huge beasts. (I honestly wouldn't want to have one crawling around my room.)
diagrams from
Robert J. Lang:
Origami Insects and their Kin.
Mineola: Dover Publications Inc., 1995.
ISBN 0-486-28602-9