Why is the New Zealand flatworm such a threat to earthworms in the UK?
The New Zealand flatworm (Arthurdendyus triangulatus) is not native to the United Kingdom and was first recorded in the UK in 1963. This species is now widely distributed throughout Scotland and can also be found in Northern England. It is carnivorous and feeds mainly on earthworms; however their impact on earthworm populations is as yet inconclusive.