Biosecurity officials are investigating the discovery of a second male Queensland fruit fly caught in a surveillance trap in Whangarei.
The insect was collected from a Ministry for Primary Industries routine surveillance trap on Tuesday and formally identified yesterday.
It follows the discovery of another fruit fly in Whangarei in January which triggered a massive surveillance programme which included setting up a controlled area with restrictions on the movement of fresh fruit and vegetables, which cost taxpayers $1.6 million.
MPI Deputy Director General Compliance and Response Andrew Coleman said the insect was trapped in the Parihaka area of Whangarei, about 400m from where a single fly was found in January this year.
"However all our information at this stage tells us this detection is a new find and not related to the January incident.