I haven't ever seen a caterpillar like that, but then I don't live in any of the countries you mentioned. The color of the fake eyes is interesting too since the bright blues and white don't really go with the light green of the body.
Still it makes for a great contrast and really makes the eyes seem even more extraterrestrial. What did you end up doing with it, since it can destroy the plant it's munching on?
I end up doing this stuff in just simple reason,
maybe they may cause damage, but to other person who view this stuff as a beautiful creation, we found it attractive.Thank you @glenalbrethsen😄