RAPID CITY, S.D. (AP) — The South Dakota Department of Agriculture is set to hold an informational forum on emerald ash borer in Rapid City.

The department says the Thursday event will show attendees how to identify affected ash trees and the treatments around to protect trees. John Ball, a forest health specialist for the department, will give information and take questions.

The invasive insect has led to the loss of tens of millions of ash trees in over 30 states.

Emerald ash borer has been confirmed in Sioux Falls. The Agriculture Department says it's time now for people to start planning what do to with their ash trees when the insect is eventually confirmed in Rapid City or nearby communities.