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Douglas-fir Beetle

Douglas-fir beetle, Dendroctonus pseudotsugae Hopk.

Douglas-fir beetle
 

The Douglas-fir beetle (Dendroctonus pseudotsugae Hopk.) infests and kills Douglas-fir throughout most of its range in western United States, British Columbia and Mexico.

Occasionally western larch trees are infested when growing among Douglas-fir under attack. Attacks in standing larch are always unsuccessful, while those in freshly felled larch are usually successful and brood emergence is equivalent to that in Douglas-fir.

Douglas-fir beetles normally kill small groups of trees, but during outbreaks 100 tree groups are not uncommon. Losses can be devastating during periodic outbreaks, such as four that occurred in western Oregon and Washington from 1950 through 1969, during which 7.4 billion board feet of timber were killed. Outbreaks in standing trees range from 2 to 4 years. Those of longest duration coincide with periods of drought.

 

 

 

 
RESOURCES:

Douglas-fir beetle USFS FIDL #5 pdf 
Wood Boring Insects of Trees & Shrubs Wood Boring Insects of Trees & Shrubs


 

FAQ

  • Preventative Treatments:
    Preventative Spraying (Permethrin, Bifenthrin, Carbaryl), Pheromone Repellents (MCH Bubble Caps/Flakes), Tree Baiting, Pheromone Traps & Lures, ODC Colloidal Chitosan, Stand Thinning
  • Post Attack Treatments:
    Removal of Infested Trees

 

 

 


 

 

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Astro Termiticide Insecticide, FMC

Astro Permethrin 36.8% Termiticide and Insecticide provides effective broad label control of over 100 insects.

Active Ingredients: Permethrin 36.8%
Insecticide Mode of Action Group: 3A
Insecticide Class:
Pyrethroids
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Gal.
From $70.95

Tengard SFR Termiticide Insecticide, UPI

Tengard SFR Termiticide and Insecticide for effective broad label control of over 100 insects.

Active Ingredients: Permethrin 36.8%
Insecticide Mode of Action Group: 3A
Insecticide Class:
Pyrethroids
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1.25 Gal., 55 Gal.
From $23.95

BaseLine Insecticide, FMC

BaseLine Insecticide provides long lasting protection against Mountain Pine and other Bark Beetles.

Active Ingredients: Bifenthrin 23.4%
Insecticide Mode of Action: 3 (Pyrethroids)
EPA Signal Word: WARNING / AVISO
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1 Gal., 5 Gal.
From $45.95

Sevin SL Carbaryl Insecticide, Bayer

Sevin SL Carbaryl Insecticide provides broad-spectrum control of more than 130 turf and ornamental pests.

Active Ingredients: Carbaryl 43.0%
Insecticide Mode of Action: 1A (Carbamates)
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 2.5 Gal.
From $121.45

Carbaryl 4L Insecticide (Sevin SL), Loveland Products

Carbaryl 4L Insecticide provides broad-spectrum control of more than 130 turf and ornamental pests.

Active Ingredients: Carbaryl 43.0%
Insecticide Mode of Action: 1A (Carbamates)
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 2.5 Gal.
From $125.95

Douglas-Fir Beetle w/MCOL Lure

Douglas-Fir Beetle w/MCOL Lure Bubble Cap (Dendroctonus pseudotsugae)

Lure Type: Pheromone Lure

Min. Order 10 lures

$30 Mfr. drop ship fee
Please allow 7 to 14 days for delivery.

From $6.51

Douglas-Fir Beetle w/Seudenol Lure

Douglas-Fir Beetle w/Seudenol Lure Bubble Cap (Dendroctonus pseudotsugae)

Lure Type: Pheromone Lure

Min. Order 10 lures

$30 Mfr. drop ship fee
Please allow 7 to 14 days for delivery.

From $6.51

Synergy Shield MCH Bubble Caps, Douglas-fir and Spruce Beetle Repellent

Synergy Shield MCH Bubble Caps, Douglas-fir Beetle Repellent uses MCH – a naturally occurring anti-aggregation pheromone of the Douglas-fir beetle to protect trees from attack by Spruce, and Douglas-fir beetles.

Active Ingredients: 3-methyl-2-cyclohexen-1-one 97.9% (500 mg)
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: 1 or 2 /tree, 40 /acre
Container Size(s): Min. Order 10 pcs.
From $2.10

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