A giant butterfly thought to be extinct in Britain has been found breeding in the country for the first time in half a century. The Large Tortoiseshell disappeared from woodlands in the 1960s due to the effects of the Dutch elm disease, climate change and parasitic flies. Now two groups of larvae have been discovered by conservationists on elm trees on the Isle of Portland in Dorset. The Large Tortoiseshell, pictured, disappeared from woodlands in the 1960s due to the effects of the Dutch elm disease, climate change and parasitic flies RELATED ARTICLES