We tried to 'save' Hawaiʻi’s crops with wasps, but now they’re devastating our native forests.

Before 1945, Hawaiʻi released wasps to kill crop pests. A study in Science showed these insects later made up 83% of parasitoids attacking native forest moths on Kauaʻi. These wasps moved from farms into remote forests, where they now use native caterpillars as hosts, becoming part of the local food web.