BOGOR, Indonesia (AP) -- They are the size of a pinhead and don't even pack a sting, but these tiny wasps are cold-blooded killers nonetheless. They work as nature's SWAT team, neutralizing a pest that threatens to destroy one of the developing world's most important staple foods: cassava.

The wasps are being released in Indonesia, the latest country threatened by the mealybug. It's a chalky white insect shaped like a pill that's been making its way across Southeast Asia's fields for the past six years. The pest first appeared in Indonesia in 2010. Bogor on the outskirts of Indonesia's capital Jakarta was ground zero.