St. John Valley Soil & Water Conservation District

Invasive Forest Pests

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Wood Borers: These insects' worm-like larvae develop beneath the bark or within the wood leaving tunnels as evidence; emerging adults leave holes in the bark.

Emerald ash borer adults.  Photo: Maine Department of Agriculture  Adult Asian longhorned beetle.   Brown spruce longhorn beetle adult, Photo CFIA

Piercing - Sucking Insects: These insects feed on fluids of the host plant. Many spend a significant part of their lives attached to the host plant.

Heavy elongate hemlock scale infestation. Photo: Maine Forest Service Hemlock woolly adelgid.  Photo: Maine Department of Agriculture, Plant Industry Red Pine Scale.

Defoliators: These insects consume the foliage of host plants.

winter moth (Operophtera brumata ) on oak (Quercus spp. ) - 5379390.  Milan Zubrik, Forest Research Institute - Slovakia, Late instar (older) browntail moth larvae.  Photo, MFS.

Firewood: Burn it where you buy it!

Don't Move Firewood

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