NEW ZEALAND'S horticulture industry, New Zealand's fourth largest export earner, is collectively holding its breath while it waits to find out if there will be any more Queensland fruit flies found in Northland.

THE MINISTRY FOR Primary Industries (MPI) is investigating a find of a single male Queensland fruit fly in a surveillance trap in Whangarei.

Restrictions in an Auckland suburb where one Queensland fruit fly was found may be lifted this weekend after no more have been found.

The Ministry of Primary Industries says there have been no new detections to date of the fruit fly in Auckland and no adverse reaction from trading partners.

Testing on samples from fruit fly traps in the Auckland Controlled Area has so far shown no sign of further fruit flies, says MPI.

The Ministry for Primary Industries (MPI) is investigating a find of a single male Queensland fruit fly in a surveillance trap in the Auckland suburb of Mt Roskill.