Invasive ladybird species threatens other ladybirds in England
(PHYSorg.com Biology)

The harlequin ladybird, officially known as Harmonia axyridis, was widely introduced across continental Europe to limit the population of pest insects. In Britain, harlquins arrived primarily by spread from mainland Europe, and it is now very common and widespread over most of England and Wales. A new Insect Conservation and Diversity study shows a clear decrease in the numbers of a native ladybird species-the 2-spot ladybird (Adalia bipunctata-on lime trees over an 11 year period in which the harlequin invaded England.