Sales of all New Zealand apples were suspended yesterday by Wellcome - one of the city's largest supermarket chains - amid fears over insect larva contamination. The announcement came after a report said the authorities in Taiwan had suspended imports of apples from the country after insect larvae were found in a shipment. The report did not specify what type of apple or insect was involved. 'We haven't had any instructions from the Food and Environmental Hygiene Department, but we are taking this precaution voluntarily for the sake of public health,' a supermarket spokesman said. The supermarket spokesman said it had inspected its apples but no larvae were found. She did not reveal what proportion of Wellcome's apples came from New Zealand, but said most of the chain's outlets sold them. 'We don't have much information at the moment, but will keep in close contact with the department.' Rival supermarket chain ParknShop said the company did not sell New Zealand apples, but would monitor developments closely. A department spokesman said it was not responsible for the case as it involved 'the production of agricultural goods' rather than food safety. But it would contact the authorities in New Zealand to learn more about the issue. The case was under the jurisdiction of the Agriculture, Fisheries and Conservation Department, he said. A spokesman for that department said it would monitor the situation, but said the impact would be minimal.