The Japanese beetle (Popillia japonica) was found in New Jersey in 1916 and has been causing massive damage and spreading westward ever since. It is particularly fond of airplane rides!
Japanese Beetle Pest Profile
Source: California Department of Food and AgricultureVisit Website
Japanese Beetle Pest Sheet
Source: California Department of Food and Agriculture - Plant Pest Diagnostics CenterDownload Pest Sheet
Images courtesy of Bugwood.org