(function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://' : 'http://') + 'stats.g.doubleclick.net/dc.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })();

Bark beetles are small, generally black, hard-shelled and approximately five millimeters in length Life Stages of the Bark Beetle Beetles bore through tree bark and lay their eggs; larvae feed on the trees' living tissues Bark Beetle photo courtesy of the US Forest Service, Mark McGregor Numerous pitch tubes are a sign that beetles have already successfuly attacked Bark Beetle photo courtesy of the US Forest Service, Mark McGregor Bark Beetle photo courtesy of the US Forest Service, Erich G. Vallery Photo courtesy of Ronald F. Billings, Texas A&M Forest Service Healthy trees fend off beetle attacks by exuding pitch into the holes and pushing the beetles out