The dietary habits of the emerald ash borer beetle are complicated
The insect's larvae doom trees by chewing tunnels under the bark
![emerald ash borer](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/11/112317_sm_EABreplacement_main.jpg?fit=860%2C460&ssl=1)
HIDDEN TASTES The emerald ash borer has been attacking ash trees in North America for more than 20 years, but it’s recently become clear that’s not all it does.
David Cappaert, Michigan State Univ./USDA (CC BY 2.0)