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California root borers are considered an orchard pest. It has become a prominent pest of fruit trees in the Intermountain West region. The tunneling habits of the larvae can cause the death of infested trees. This can be caused directly, through girdling of the root cambium, or indirectly as the weakened host becomes susceptible to disease. [1]
They are found in western North America, from Alaska through California, and in New Mexico. [1] The banded alder borer may be found in the spring and summer on the bark of alder trees. The exact reason is unknown, but R. funebris is drawn to recently painted buildings and may be found, in multitudes, resting on the paint.
Bark beetles enter trees by boring holes in the bark of the tree, sometimes using the lenticels, or the pores plants use for gas exchange, to pass through the bark of the tree. [3] As the larvae consume the inner tissues of the tree, they often consume enough of the phloem to girdle the tree, cutting off the spread of water and nutrients.
The goldspotted oak borer is just 14 miles from the Santa Monica Mountains' 600,000 oak trees and threatens to devastate forests throughout California, harming wildlife and increasing fire risks.
If you think you found a beetle or tree damage, report it by calling the ALB hotline at 1-866-702-9938 or submitting an online report at www.AsianLonghornedBeetle.com. Try to photograph the ALB or ...
Were it not for these beetles and their larval tunnels promoting fungal infections, it could be one of the most valuable timber trees that could be planted in the northern and middle states; young trees grow quickly and vigorously for a number of years, but soon become stunted and diseased, and rarely live long enough to attain any commercial ...
Extreme drought and bark beetles now threaten California's Ancient Bristlecone Pine Forest, home to Methuselah, a 4,853-year-old bristlecone pine.
Placosternus difficilis, commonly known as the mesquite borer, is a wood-boring longhorn beetle [1] [2] which resembles a black and yellow wasp. [3] Larvae of mesquite borers are deposited in, among others, mesquite trees, although it has been recorded from a range of hosts and is considered polyphagous. [4]