Exotic Pest Reporting
David Cappaert, Michigan State University, Bugwood.org
Japanese beetle (Popillia japonica) is an insect pest of a great variety of trees, shrubs. It is a native of Japan and was first detected in New Jersey in 1916.
Well established east of the Mississippi River, infestations west of the Mississippi River tend to be aggressively eradicated before they can be established.
Summaries of State Plant Protection Laws and Regulations