*Cactoblastis cactorum

Cactoblastis cactorum larvae

Caterpillars of Cactoblastis feed voraciously on the Prickly Pear, *Opuntia stricta. An example of a successful biological control program; they were deliberately introduced to Australia from South America to control the exotic Prickly Pear which had taken over pastures in large areas of South Eastern Queensland and Northern NSW. 
Photograph: L. von Richter