A Black Widow spider has been found on a building site is Southampton according to Government Plant Protection Officer Claire Jessey. She said it was possible there were more on the Island - they can give a nasty bite and in rare occasions can be fatal if there are complications. Ms Jessey said people should keep an eye out for the spiders which are jet black and an inch and a half long with an hour-glass figure underneath. The King Edward VII Memorial Hospital has been alerted to look out for people with Black Widow bite symptoms. The female is notorious for eating the male after mating.