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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 mountain pine beetle (Dendroctonus ponderosae) is a species of bark beetle native to the forests of western North America from Mexico to central British Columbia. It has a hard black exoskeleton, and measures approximately 5 millimetres (1⁄4 in), about the size of a grain of rice. In western North America, an outbreak of the beetle and ...
Dendroctonus frontalis, the southern pine beetle, [1] often shortened to simply SPB, is a species of bark beetle native to the forests of the southern United States, Mexico and Central America. [2] It has recently expanded its range to the northeastern United States , where it is considered an invasive species and has destroyed massive amounts ...
Dendroctonus adjunctus, the roundheaded pine beetle, is a species of bark beetle in the family Curculionidae found in North America. [1][2][3] A parasite, the roundheaded pine beetle feeds on and eventually kills pine trees of several species in Guatemala, Mexico, and the Southern United States (New Mexico, Arizona, Nevada, Colorado, Utah). [4][5]
D. brevicomis. Binomial name. Dendroctonus brevicomis. LeConte, 1876. Dendroctonus brevicomis, the western pine beetle, is a species of crenulate bark beetle in the family Curculionidae. It is found in North America [1][2][3] and parts of Mexico. [4] It is known as a destructive pest of ponderosa and Coulter pine trees. [5]
The trees are often simultaneously attacked by certain species of engraver beetles (Ips spp.) and the southern pine beetle (Dendroctonus frontalis). Dendroctonus terebrans attacks pine trees near the base. A female beetle tunnels into the bark and has to overcome the resin exuded by the tree as a defence. This oozing resin mixes with the wood ...
Description. Common names include pine sawyer, western pine sawyer, spined woodborer, and ponderosa pine borer. [2] A taxonomic synonym is Ergates spiculatus. [2] This beetle species develops on fallen ponderosa pines and Douglas firs. [3] T. spiculatus is the largest species of wood boring beetle in Colorado.
Species closely related to Tomicus piniperda include Tomicus minor (lesser pine shoot beetle), with a similar distribution but ecologically separated, using standing dead pines and with its breeding galleries across the grain, not parallel to it; [2] Tomicus destruens in the Mediterranean region, which differs in details of ecology, infesting primarily stone pine P. pinea and maritime pine P ...
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