Guardian: A species of rare UK butterfly is under threat after a widespread tree disease caused its only habitat to virtually disappear.
According to research, the population of White-letter Hairstreak butterflies has dropped by 96% in the last 40 years.
Experts say over the same period, the UK population of elm trees, the butterflies exclusive habitat, has dropped by more than 30m.
The Wildlife Trust has estimated there are approximately 1,000 mature English elms left in the UK following an outbreak...