Western Pine Forests Hit by Bark Beetles (image) Dartmouth College Share Print E-Mail Caption Large swaths of dead or dying Western pine forests have turned a reddish-brown after being attacked by mountain pine beetles. Credit Barbara Bentz Usage Restrictions Must credit Barbara Bentz. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.