From americanforest.org
In the meantime, scientists are learning more about native, natural enemies of EAB. In the past, native parasitoid wasps in the U.S. have evolved to find and attack the larvae of native beetles, such as bronze birch borer, that colonize stressed or dying trees. Until recently, however, native parasitoids rarely, if ever, attacked EAB larvae. At least one native parasitoid, Atanycolus cappaerti, now seems to be “learning” about EAB. This tiny wasp had never been studied and did not even have a scientific name until 2010. In the last five years, Atanycolus cappaerti has become increasingly common, usually in sites characterized by heavily infested, dying ash trees. Relatively little is yet known about this wasp and whether it will be able to slow the population growth of EAB.
So, keep habitat around for bugs, you never know when one of them will come in handy!