Efforts to stamp out yellow-legged hornets in New Zealand are widening. 

Biodiversity New Zealand is expanding the 5-kilometre surveillance zone in Glenfield and Birkdale on Auckland's North Shore further out to 11-kilometres, to ensure only one population is at large. 

Victoria University Ecology and Entomology Professor Phil Lester told Kerre Woodham hornets target worker bees one by one and will hurt more than our honey sector.  

He says bees support our dairy, kiwifruit, and avocado industries, and if they get established it will be a real problem. 

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