The black widow spider.
Last week, the Ministry for Primary Industries confirmed it had discovered 10 poisonous spiders in bunches of imported grapes in the North and South Islands, prompting officials to pull all Mexican grapes from supermarket shelves across New Zealand.
Yesterday, a spokeswoman for MPI said a total of seven black widows and 13 yellow sac spiders had been discovered, but the ministry had not received any reports of people being bitten.
Since last week, further consignments of Mexican grapes had arrived in New Zealand.
The grapes had been treated with an MPI approved treatment to kill any "potential hitchhiking spiders", and some of this produce may now be reappearing in stores, she said.
