Sometimes something really cute can be really destructive. See what porcupines can do to wooden infrastructure if you don’t believe me. However, in this instance, I’m referring to the emerald ash borer beetle (Agrilus planipennis). The larvae of this beetle carve out tunnels in ash trees (as shown above) and the species ultimately ends up killing the entire tree. Since its introduction to the upper Midwest in 2002, the emerald ash borer has killed over 30 million ash trees. Almost all species of ash are susceptible to the emerald ash borer and once these beetles start their damage, there’s hardly any controlling it.