Dendroctonus is a genus of bark beetles known for their role in forest ecosystems. These small insects primarily infest coniferous trees, such as pine and spruce, where they create tunnels under the bark. Their activities can lead to tree stress and mortality, especially during outbreaks. Some species within the Dendroctonus genus, like the mountain pine beetle, have significant ecological and economic impacts. They can alter forest composition and health, affecting wildlife habitats and timber industries. Understanding their life cycle and behavior is crucial for managing forest health and mitigating damage.