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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 ...
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]
The nematodes drop off the beetle, and infect healthy pine trees when the adult beetles eat the young pine branches. [16] The pine wilt nematode is spread by a number of bark beetles and wood borers, typically associated with the genus Monochamus of pine sawyers. [17] Pine sawyers lay their eggs in the bark of dead timber.
The cottonwood borer (Plectrodera scalator) is a species of longhorn beetle found in the United States east of the Rocky Mountains that feeds on cottonwood trees. [3] It is one of the largest insects in North America, with lengths reaching 40 millimetres (1.6 in) and widths, 12 mm (0.47 in). It is the only species in the genus Plectrodera. [4]