A victory over one invasive thanks to imported predatory insect

Only a few years ago Hawaii’s Department of Agriculture noted that gall wasps had converged upon Wiliwili (Erythrina sandwicensis) trees to devastating effect. Threatened with extinction, the native trees have been rescued from the brink by the resourceful work of an entomological team who, braving the politically charged wilds of Africa’s Tanzania, retrieved a predatory insect which targets the aggressive wasp.

Reportedly more than 240 alien species have been intentionally introduced to Hawaii in an effort to control pest species, and the earliest introductions often had horrendous consequences for the indigenous ecology, however, today’s introduced species are better researched to strategically excise invasive species.

Read more here.

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