"A tiny wasp could save Christmas Island’s spectacular red crabs from crazy ants"| Australia news | The Guardian

"Have you heard the one about the wasp that kills the bug that feeds the ants that kill the crabs that keep the forests healthy on Christmas Island?
If not, that's because it hasn't..."

https://www.theguardian.com/
australia-news/2016/dec/03/a-tiny-wasp-could-save-christmas-islands-spectacular-red-crabs-from-crazy-ants