It seems a White-lined Sphinx Moth, but I read that they can be found in Central America, United States and Canada. I found it in the South of Italy. How come?
This was active and flying around mid-day when I noticed it land in some dry brush that provided good camouflage. I captured a little video of it vibrating its wings while perched there, before flying off again.
Lam Tsuen Valley, Tai Po, Hong Kong