caterpillers on hydrangea.
japanese name: ミスジビロードスズメ.
host plant: Hydrangea scandens(ガクウツギ), Hydrangea macrophylla f.normalis(ガクアジサイ).
http://www.jpmoth.org/Sphingidae/Macroglossinae/Rhagastis_trilineata.html