Blueberry maggot (Rhagoletis mendax) is known to infest blueberries in various states situated in the eastern part of the United States, and blueberries produced in this state are susceptible to infestation by blueberry maggot (Rhagoletis mendax); therefore, a quarantine is established to prevent shipments or receipt of blueberries from such eastern states which may constitute a direct threat or hazard to blueberry production in Washington state.