Where did the Japaese Beetle come from?

It is through accidental introduction that the Japanese beetle is here in the United States of America.

Specifically, the insect in question (Popillia japonica) comes from Japan. Experts consider the beetle's introduction as an accidental companion to a shipment of iris bulbs before 1912. The first recorded instance of the exotic pest's presence on American soil dates to 1916 at a New Jersey nursery near Riverton and to 1939 in a sight-seer's car arriving by ferry from Maine to Nova Scotia, Canada.