What is the typical diameter of borer damage in red oak?

What is the typical diameter of borer damage in red oak?

• A. From 2 to 3 inches
• B. From 1/100 to 1-1/2 inches
• C. From 5 to 10 inches
• D. From 1 to 3/4 inches

Answer: (B)

Borer damage in red oak is typically quite small in diameter. The holes and feeding galleries created by these insects are usually very narrow, often just a pinhole or tiny slit, with the overall damaged width ranging from about 1/100 inch up to about 1-1/2 inches. This reflects the difference between an individual borehole (extremely small) and the extent of a single gallery or localized damage area (up to about one and a half inches). In practice, most infestations don’t produce wide, sweeping damage unless there are multiple attack points or heavy colonization.

Borer damage in red oak is typically quite small in diameter. The holes and feeding galleries created by these insects are usually very narrow, often just a pinhole or tiny slit, with the overall damaged width ranging from about 1/100 inch up to about 1-1/2 inches. This reflects the difference between an individual borehole (extremely small) and the extent of a single gallery or localized damage area (up to about one and a half inches). In practice, most infestations don’t produce wide, sweeping damage unless there are multiple attack points or heavy colonization.