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US releases millions of wasps to fight emerald ash borer

Posted on Wed, 25 May 2016, 12:24

Parasite from China attacks eggs and larvae of Asian insect pest (emerald ash borer) that has wiped out tens of millions of trees in north America. Millions of tiny wasps that are natural parasites for the emerald ash borer have been released into wooded areas in 24 states of the US to try and peg back the tree-killing insect s advances. The US Department of Agriculture has researched and approved for release four species of parasitic wasps that naturally target the larval and egg stages of the ash borer, which has killed an estimated 38m ash trees in urban and residential areas. See More.

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