The Uninvited Guests: Understanding the Rise of Invasive Insects and Their Impact on Ecosystem Balance The arrival of non native insects in a region is not unusual.
However, when these invaders are species that have not co evolved with native plants and animals for millennia, it can spell disaster.
Take the emerald ash borer (Agrilus planipennis), an Asian beetle that has decimated millions of ash trees across North America over several decades.