Monochamus spp.

Monochamus spp.

Short pest overview:

It is a genus of longhorn beetles found throughout the world. They are commonly known as sawyer beetles or sawyers, as their larvae bore into dead or dying trees, especially conifers such as pines. They are the type genus of the Monochamini, a tribe in the huge long-horned beetle subfamily Lamiinae, but typically included in the Lamiini today. If sawyer beetles infect freshly cut pine logs, they can cause a 30-40% loss in value due to the tunnels their larvae bore. Some species are known to transport phoretic Bursaphelenchus nematodes, including Bursaphelenchus xylophilus which causes pine wilt disease.

Geographic Distribution:

The species is found in Eastern and Northern Europe, Northern and Eastern Asia.

Life Cycle:

Monochamus requires from one to three years to complete its life cycle, but generally it completes its life cycle in two years. Adults emerge from dead host trees between May and July. The larva of this beetle develops inside the tree, which harms living tree.