Today’s Forest: Beetles & borers


[Music] I’m Kurt Allen, entomologist for the U.S. Forest Service, and today in “Today’s Forest,” we’re going to be talking about other bark beetles and wood borers that attack pine trees in the area here. And one of the most common ones is [the] what we call it a little cousin to the Mountain Pine Beetle, and that’s the Ips Beetle, or Engraver Beetle. We can see in this sample here, their gallery, as opposed as opposed to the Mountain Pine Beetle, which is sort of straight up and down, form sort of a “Y” shape under the bark. And that’s where they lay their eggs. These are the parent galleries under here. And one of the things that’s commonly found in Mountain Pine Beetle areas are wood-boring beetles that come in. We’re actually seeing them attack the trees right after the mountain pine beetles have, and the wood bores are much larger insects they’re the ones generally have the long antennae, often called Longhorn Beetles, and the larvae feed under the bark, and they actually will bore into the wood. they’re bigger and they create a much coarser sawdust when they chew through the bark, and they really degrade the phloem very quickly. [Music]

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