The monitoring programme will last three weeks and will centre on a 400m radius surrounding the trap where the larvae were found, Health NZ said.
During this period, health protection officers will lay traps in the survey zone.
“These have been hidden away from plain sight so they are not disturbed, for example in old tyres, bushes or pools of water,” Sinclair said.
“We ask members of the public to avoid touching or disturbing these traps if they find them, as it may disrupt our monitoring and trapping efforts.”
The public was asked to report any dead mosquitoes to 0800 669 943. The line will be open all hours.
“[They] can then be collected and tested to verify if they are an exotic specimen.”
Sinclair said some exotic mosquito species can carry serious diseases, including yellow fever virus, dengue fever, chikungunya virus and Zika virus, if they become established.
“New Zealanders are most at risk from diseases transmitted by mosquitoes when travelling abroad, including in Pacific Island countries and territories where dengue fever is currently known to be present,” he added.