The Douglas fir beetle is a curculionidae beetle and a member of the subfamily of bark beetles.
Size: 4.4 to 7 mm
Color: They start as light brown, becoming black or dark brown as time goes on. The elytra are reddish.
Other Characteristic Features: These beetles are hairy.
Larvae are white, legless, and the size of a rice grain.
The pupae are cream or white.
Eggs are laid on either col3 of 6 – 30 inch galleries present incol3 the bark of the host plant.
| Lifespan | Not recorded |
| Distribution | western North America |
| Habitat | Rocky mountain slopes |
| Seasons active | April, May, or early June |
| Predators | Clerid beetles and Dolicopdid flies |
| Host plants | Douglas firs; also downed Larch trees |
| Diet of adults | Does not feed |
A Douglas-fir beetle attack can be characterized by patches of orange to reddish-brown boring dust in the bark of an infected tree. Higher up in the tree, resin streams are also observed.
Image Source: summerlandreview.com, i2.wp.com, bugwoodcloud.org, entomologytoday.org, amazonaws.com, bugwoodcloud.org
The Douglas fir beetle is a curculionidae beetle and a member of the subfamily of bark beetles.
Size: 4.4 to 7 mm
Color: They start as light brown, becoming black or dark brown as time goes on. The elytra are reddish.
Other Characteristic Features: These beetles are hairy.
Larvae are white, legless, and the size of a rice grain.
The pupae are cream or white.
Eggs are laid on either col3 of 6 – 30 inch galleries present incol3 the bark of the host plant.
| Lifespan | Not recorded |
| Distribution | western North America |
| Habitat | Rocky mountain slopes |
| Seasons active | April, May, or early June |
| Predators | Clerid beetles and Dolicopdid flies |
| Host plants | Douglas firs; also downed Larch trees |
| Diet of adults | Does not feed |
A Douglas-fir beetle attack can be characterized by patches of orange to reddish-brown boring dust in the bark of an infected tree. Higher up in the tree, resin streams are also observed.
Image Source: summerlandreview.com, i2.wp.com, bugwoodcloud.org, entomologytoday.org, amazonaws.com, bugwoodcloud.org
