Biosecurity New Zealand said the capture of a single male does not mean there is an outbreak.
However, it says the community needs to help in stopping any possible spread.
In Australia, the Queensland fruit fly costs growers hundreds of millions of dollars a year in damage and pest control.
They are not a risk to people.
“There have been 13 incursions of different fruit fly in Auckland and Northland since 1996 and all have been successfully eradicated thanks to the work of Biosecurity New Zealand, our horticulture partners, and local communities who have stepped up to help,” Inglis said.
Queensland fruit fly maggots eat more than 200 different types of fruit and vegetables, Biosecurity NZ said.
Adult flies lay eggs in fruit, which rot when the maggots hatch.
– RNZ