What are the morphological characteristics of the small blue-and-white scarab?

Morphological characteristics of scarab: the adult of scarab is about 14 mm long, slightly oblate and oval, and its back is mostly dark green, but it changes; The ventral surface is dark brown and shiny. There are two white velvet spots on the chest back plate, and there are also white or yellow-white velvet spots on COLEOPTERA, with large white spots on the side. Oval, long1.7mm, white to light yellow. The last instar larvae are 32 ~ 36 mm long, with milky white curved body and brown head. The naked pupa is 14 mm long, which is pale yellow and white at first, and then turns orange.