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A bark beetle is the common name for the subfamily of beetles ... Monoterpenes are a chemical fragrance that plays a significant role in tree-insect interactions ...
The chemical has a pleasant characteristic odor. Besides being a natural constituent of plants, it and its analogs are insect pheromones. In particular, verbenone when formulated in a long-lasting matrix has an important role in the control of bark beetles such as the mountain pine beetle and the Southern pine bark beetle.
This insect is part of the western forest ecosystem, playing a role in thinning weak trees in a stand. [2] Adult Douglas-fir beetles are light brown when young and become dark brown or black with reddish wing covers. They are somewhat hairy and range in size from 4.4 to 7 mm. The larvae are small, legless, the size of grains of rice, and white.
The emerald ash borer (Agrilus planipennis), also known by the acronym EAB, is a green buprestid or jewel beetle native to north-eastern Asia that feeds on ash species (Fraxinus spp.). Females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years.
Bark beetles carry Dutch elm disease as they move from infected breeding sites to healthy trees. The disease has devastated elm trees across Europe and North America. [165] Larvae of the Colorado potato beetle, Leptinotarsa decemlineata, a serious crop pest. Some species of beetle have evolved immunity to insecticides.
Cucujus clavipes is known as the flat bark beetle. [1] [2] It is found throughout North America. [3] These are generally found near tree line [4] under bark [2] of dead poplar and ash trees. [5] C. clavipes are described as phloem-feeding [6] and often predators [1] of other small insects, such as wood-boring beetles, and mites. [5]