Invasive beetles might be boring through the valley oaks in your neighborhood.
Mediterranean oak borers were first identified in the city of Sacramento last July. They target oaks native to Sacramento, those trees with arching canopies that line the American and Sacramento rivers, and can kill an 80-foot giant in five years.
The beetles have spread too far across the Sacramento region to be quarantined: they have reached Citrus Heights, Curtis Park and, most recently in April, Beals Point at Folsom Lake. It leaves arborists, entomologists and city workers no choice but to prioritize removing infested trees — which can cost at least $4,000 — and raising awareness…