Japanese beetle
are three instars. First and second instars reach a length of approximately 11 and 19 mm, respectively, whereas the mature, third instar, averages 32 mm [...] metallic green of the adult. The adult is an attractive, broadly oval beetle, 8-11 mm long, and about 5-7 mm wide. Females are usually slightly bigger than males [...] grubs move closer to the surface and resume feeding on plant roots at 2.5 to 5.0 cm depth. Pupation usually occurs after 4-6 weeks of feeding, and the adults