Parts of Mira Mesa are under quarantine after more Mediterranean fruit flies were found in the area.
Officials say three medflies and 14 larvae were found one mile away from the area where one of the insects was previously discovered May 22.
Medflies are known to damage hundreds of different fruits and vegetables.
“Mediterranean Fruit Flies have one of the widest hosts. They can lay eggs in over 260 kinds of fruits and vegetables may of which are grown in San Diego commercially," Deputy Agriculture Commissioner Dawn Nielsen said.