I thought that this metallic green weevil would be easy to identify, but there are several similar species in the genus Phyllobius, and other people’s photos on Internet seem to be confused. I’ll try to identify it again another time.

Coleoptera: Curculionidae
Phyllobius species
Leaf Weevil = hige-boso-zoumushi

Location: In orchards and bamboo/pine forest above Yokoyama Village (Google map)