Invasive ladybirds wage 'biological war' on natives

German researchers have discovered the biological keys to the success of an invasive species, wreaking havoc across Europe and the US The Asian ladybird was originally brought in to control aphids in greenhouses. via Pocket http://www.bbc.co.uk/news/science-environment-22554162#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa