Ladybird decline driven by 'invading' harlequin

Ladybirds native to the UK and other European countries are declining fast as the invasive harlequin species spreads, scientists have shown. A new study provides compelling evidence that the arrival of the invasive non-native Harlequin ladybird to mainland Europe and subsequent spread has led to a rapid decline in historically-widespread species of ladybird in Britain, Belgium and Switzerland.