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Yellow douglas fir borer

Yellow douglas fir borer

Centrodera spurca

A species of Centrodera

The yellow douglas fir borer (Centrodera spurca) earns its name through the yellow coloring and its love of feasting on Douglas firs. It has two long antennae just like other longhorn beetles. These insects take a couple of years before they mature into adulthood, feeding on roots until the right time.

General Info About Yellow douglas fir borer
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Attributes of Yellow douglas fir borer
Colors
Brown
Black
Habitat
oak; chaparral
Adult Food Sources
Leaves, pollen, nectar, plant sap, bark
Larva Food Source
Wood, plant tissue, decaying organic matter, phloem, xylem
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
The Yellow douglas fir borer is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
The Yellow douglas fir borer can bore into the wood and may damage its structure, or even harm the health of trees. Stay alert if you frequently observe it in your house.
Pollinator
Not reported
Mouthparts Type
Chewing mouthparts
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Species Status of Yellow douglas fir borer
It is found in North America.
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Adult Size of Yellow douglas fir borer
1.8 - 2.5 cm
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Predators of Yellow douglas fir borer Larvae
Birds, rodents, predatory beetles, parasitic wasps
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Predators of Adult Yellow douglas fir borer
Birds, reptiles, small mammals, spiders, predatory insects
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Interesting Facts About Yellow douglas fir borer
Yellow douglas fir borer's larvae are uniquely adapted to bore through hardwood which they do with precision, using specialized mandibles that work like natural drills.
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Scientific Classification of Yellow douglas fir borer
Tips for Finding Yellow douglas fir borer
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Youth Habitat of Yellow douglas fir borer
Forests and Woodlands, Rotting and Decaying Matter
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Habitat Preferences of Yellow douglas fir borer Through Different Life Stages
Eggs of yellow douglas fir borer often adhere to the bark of dead or dying conifer trees, especially pines. Larvae are typically found within the wood, where they create tunnels as they feed, which makes finding them a matter of carefully peeling back bark or even chopping into the infested wood. Pupation occurs within these wooden tunnels or in the ground, meaning one must look closely at the debris or soil at the base of infested trees. Adult yellow douglas fir borer are commonly spotted on or near host trees, particularly during warm months, so searching for them involves inspecting tree trunks, branches, and even foliage.
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When is the Best Time to Observe Yellow douglas fir borer
The adult yellow douglas fir borers are often most active during the evening or night. Therefore, dusk or just after sunset is a suitable time to search for them.
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What is the Best Weather to Observe Yellow douglas fir borer
Warm and humid conditions are typically suitable weather for finding yellow douglas fir borers as these conditions favor their activity and are conducive for their mating behaviors.
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How and Where Can You Find Yellow douglas fir borer at Different Life Stages
Larva Yellow douglas fir borer larvae are wood-boring, so check under the bark of dead or dying trees, especially in hardwoods. Listen for the sound of chewing or look for frass (sawdust-like excrement) at the base of trees.
Pupal Finding yellow douglas fir borer pupae can be challenging as they are usually inside the wood. However, look for exit holes on dead wood where pupae may be close to emerging as adults.
Adult Adult yellow douglas fir borers can be found on or around host plants. Try using a light trap at night to attract them or check flowers during dusk when they may be feeding on nectar or sap.
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Harmful Effects of Yellow douglas fir borer
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Forestry Pest

Yellow douglas fir borer larvae bore into stems, causing structural weakening. In low numbers, the damage is typically negligible, but severe infestations can lead to dieback and tree death, aggravating forest health declines and impacting human activities dependent on forestry.

More Effects of Yellow douglas fir borer

Common Questions People Also Ask
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