Ben Kilham at the Kilham Bear Center in Lyme, New Hampshire, found this quarter-sized structure under the bark of a pine log. What is it?
Answer
This is the winter chamber of a ribbed pine borer. Learn more in this post on Mary Holland’s Naturally Curious website. And see photos of this long-horned beetle on this page from the Bugwood Network.
This week’s contest winner was Scott Luedtke