For decades New Zealand's invasive wasps have had the run of the place, with no natural enemy to control the growing numbers. But that's about to change, with the green light given today to introduce two insects from Europe to take on the pest. Your playlist will load after this ad A beetle and hoverfly will battle the wasps, which are damaging the environment. Source: 1 NEWS The Tasman District Council, which has a big wasp problem, applied for the bio control agents, a hover fly and wasp-nest beetle. The regulator, the Environmental Protection Authority assessed their safety. "The reason why it's safe is because these two insects only attack wasps and that's been established both where they come from in Europe but also elsewhere," said Chris Hill, general manager of hazardous substances and new organisms.