Early spring sightings show colourful insect is a resident species for first time in decades, says conservation charity Early spring sightings show colourful insect is a resident species for first time in decades, says conservation charity The large tortoiseshell – an elusive and enigmatic butterfly that became extinct in Britain in the last century – is a UK resident species once again, with a flurry of early spring sightings. Britain’s list of native butterflies has increased to 60 with the