Mecho and Ocho are rarely seen except in formal ceremonies; however, these two butterflies are historically important since they are the first examples of representational origami.
This information is derived from “Wrapping Origami” by Yoshihide Momotani (1993). Momotani gives instructions for 3 pairs of paper butterflies:
• Classical Mecho & Ocho (from Kayaragusa)
• Formal Mecho & Ocho (Traditional), and
• Regular Mecho & Ocho (Traditional)
The terms “formal” and “regular” will be used to maintain consistency.
Instructions to Fold the Formal version of Ocho
4: fold only the top layers. Allow the back flaps to swivel towards the front.
10: allow the back flaps to swivel towards the front.