USDA Forest Service - Region 2 - Rocky Mountain Region Archive, USDA Forest Service, Bugwood.org
Japanese Pine Sawyer
Monochamus alternatus

Japanese Pine Sawyer (Monochamus alternatus) is an insect pest of non-native pine trees. It is a native of Japan.

Carrier of the pine wilt nematode, which causes wilt disease of non-native pine trees. This is just one of many forest pests that are moved to un-infested forests by humans moving firewood. Help protect our forests: don't move firewood!

This insect pest has been identified by USDA-APHIS as a serious threat to US Agriculture and Natural Resources, and surveys have been planned for multiple states.

Survey Maps