Forest tent caterpillars

Forest tent caterpillar outbreak continues in parts of Michigan

The insects, which are native to Michigan, occur in widespread outbreaks every 10 to 15 years. The most recent outbreaks peaked in 2002 and 2010. They’ve been spotted across the Lower Peninsula and in the eastern Upper Peninsula. Outbreaks usually last two or three years; this is the second or third year for outbreaks in some areas.