About Douglas-fir Beetle
A dark reddish-brown bark beetle that attacks Douglas-fir trees, particularly those weakened by drought or windthrow. It is among the most damaging bark beetles in the Pacific Northwest.
Did You Know?
It preferentially attacks fallen or stressed trees, but during outbreaks it can kill large numbers of healthy standing trees.
How to Identify Douglas-fir Beetle
Douglas-fir Beetle (Dendroctonus pseudotsugae) belongs to the order Coleoptera, family Curculionidae. Adults typically measure 4-6 mm.
Douglas-fir Beetle Habitat
Douglas-fir Beetle is found in mountains habitats, particularly across Western North America from British Columbia to Mexico. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.
Douglas-fir Beetle Diet and Feeding
Douglas-fir Beetle feeds on wood and bark, often boring into timber. Wood-feeding insects contribute to the decomposition of dead trees and nutrient cycling in forest ecosystems.
Where Is Douglas-fir Beetle Found?
Douglas-fir Beetle can be found in Western North America from British Columbia to Mexico, where it inhabits mountains environments. Its distribution is influenced by climate, food availability, and habitat suitability.
Distribution Map
Where Douglas-fir Beetle can be found
Is Douglas-fir Beetle Dangerous?
Douglas-fir Beetle is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.
Douglas-fir Beetle Role in Nature
Douglas-fir Beetle is part of the food web as a primary consumer, feeding on plant material. It serves as an important food source for birds, bats, amphibians, and other insectivores, connecting plant energy to higher trophic levels.
Seasonal Activity
Frequently Asked Questions About Douglas-fir Beetle
What does Douglas-fir Beetle look like?
The Douglas-fir Beetle typically measures 4-6 mm.
Where is Douglas-fir Beetle found?
The Douglas-fir Beetle is found in Western North America from British Columbia to Mexico and typically inhabits mountains environments.
What does Douglas-fir Beetle eat?
The Douglas-fir Beetle feeds on wood and bark, often boring into timber.
Is Douglas-fir Beetle dangerous to humans?
The Douglas-fir Beetle is generally harmless to humans. It does not bite or sting and poses no significant health risk.
What is an interesting fact about Douglas-fir Beetle?
It preferentially attacks fallen or stressed trees, but during outbreaks it can kill large numbers of healthy standing trees.
Cite This Page
APA:
InsectDiscover. (2026). Douglas-fir Beetle (Dendroctonus pseudotsugae). Retrieved from https://insectdiscover.com/insect/douglas-fir-beetle
MLA:
"Douglas-fir Beetle." InsectDiscover, https://insectdiscover.com/insect/douglas-fir-beetle.