Allium Leaf Miner, or Onion Leaf Miner is one of the worst onion pests in Europe. It is currently found in several counties in New Jersey and Pennsylvania. This pest was recently deregulated by USDA-APHIS, meaning it will not be stopped when found at port inspections, thereby posing a threat to other onion producing areas in the U.S. Click on the link below for more information about this pest from the Oregon Department of Agriculture.
http://www.oregon.gov/ODA/shared/Documents/Publications/IPPM/AlliumLeafminerPestAlert.pdf
View full alert at: http://pnwpestalert.net/alerts