"Adults of the EMERALD ASH BORER (EAB) will start emerging about the time that black locust trees bloom in late April or early May. EAB adults are metallic green, bullet-shaped and about a half-inch long.
...Where EAB infestations exist, adult emergence is expected to start after April 20 in southern Missouri, during the last week of April across the middle of the state, and in early May in northern Missouri. EAB adults then will be around through July."
Want to protect your trees? Contact Clipper for information about systemic injections.
[Excerpt from MO Dept. of Conservation - Tree Health News: April 25, 2016]