The vast majority of insect damage to trees is caused by common insect pests. These insects cause enormous economic damage by destroying landscape trees that need to be removed and replaced, and by destroying trees essential to the North American logging industry.
Aphids are generally not harmful, but large populations can cause leaf variability and stunted shoot growth. Aphids also produce large amounts of a sticky exudate known asMel, which often darkens with the growth of asoot. Some species of aphids inject a toxin into plants, further distorting growth.
The exotic longhorn beetle (ALB) belongs to this group of insects. ALB was first found in Brooklyn, New York in 1996, but has now been reported in 14 states and is threatening more. Adult insects lay eggs in an opening in the bark of a tree. The larvae then drilled large burrows deep into the wood. These "food" galleries disrupt the tree's vascular function, eventually weakening it to the point where it literally collapses and dies.
woolly balm adelgid
Adelgids are small, soft-bodied aphids that feed exclusively on coniferous plants with piercing and sucking mouthparts. They are an invasive insect and are believed to be of Asian origin. hemlockadelgid lanosoand the balsam-wool adelgid infest hemlock and spruce, respectively, and feed on the sap.
black turpentine beetle
The black turpentine beetle is found from southern New Hampshire to Florida and from West Virginia to eastern Texas. Attacks have been observed on all native pines in the south. This beetle is worst in pine forests that are stressed in some way, such as those processed for marine deposits (pitch, turpentine, and pitch) or for timber production. The beetle can also attack damaged pine trees in urban areas and has been known to attack healthy trees.
Douglas fir bark beetle
Douglas fir beetle (Dendroctonus pseudotsugae) is an important and harmful pest throughout the range of its primary host, Douglas fir (Pseudotsuga menziesii). western larch (western larchNutt.) is also occasionally attacked. Damage caused by this beetle and economic loss if Douglas fir wood was widespread in the tree's natural range.
douglas fir tuff butterfly
A mariposa Douglas Fir Tussock (Pseudotsugata-Orgie) is an important defoliator of Norway spruce and Douglas fir in western North America. Serious outbreaks of puffed moths have occurred in British Columbia, Idaho, Washington, Oregon, Nevada, California, Arizona and New Mexico, but the moth is causing significant damage over a large geographic area.
eastern pine borer
The eastern pine borer,Eucosma gloriola, also known as the White Pine Tip Moth, American Pine Bud Moth, and White Pine Bud Moth, damages young conifers in northeastern North America. As it attacks the new growth of young conifers, this insect is particularly destructive to trees planted for the Christmas tree market.
emerald ash drill
The Emerald Ash Burr (Agrilus planipennis) was introduced to North America sometime in the 1990s, where it was first reported to be gray (genusashes) in the Detroit and Windsor areas in 2002. Since then, infestations have been found throughout the Midwest and East as far north as Maryland and Pennsylvania.
O webworm (Hyphantria-Keil)It has been known to feed on nearly 100 different tree species in North America at the end of the season. These caterpillars build huge silk webs and prefer persimmons, sourwood, hickory trees, fruit trees and grasslands. Webs are unsightly in the landscape and are usually more numerous when the weather is hot and humid for long periods.
The forest tent caterpillar (Distria malacosoma) is an insect found in the United States and Canada, where hardwoods grow. The caterpillar eats leaves of most hardwood species, but prefers sugar maple, aspen and oak. Regional outbreaks occur at intervals of 6 to 16 years in the northern areas, while annual infestations occur in the southern area. The eastern tent crawler (badass American) is more of a nuisance than a threat and is not considered a serious pest.
to cicana butterfly,Lymantria dispar, is one of the most notorious pests of hardwood trees in the eastern United States. Since the 1980s, the gypsy moth has defoliated nearly a million or more acres of forest each year. In 1981, a record 12.9 million acres were defoliated. This is an area larger than Rhode Island, Massachusetts and Connecticut combined.
Hemlock Woolly Adelgid
Eastern and Carolina Hemlock is now under attack and in the early stages of being wiped out by the Woolly Adelgid (HWA) Hemlock.Adelges tsugae. Adelgids are small, soft-bodied aphids that feed exclusively on coniferous plants with piercing and sucking mouthparts. They are an invasive insect and are believed to be of Asian origin. The cotton-covered insect hides in its own fluffy secretions and can only live on hemlock.
Woolly hemlock adelgid was first found in eastern ornamental hemlock in Richmond, Virginia in 1954 and became a pest of concern in the late 1980s when it spread to natural stands. It now threatens the entire hemlock population in the eastern United States.
Beetle Ips (Your grandicollis, ich. calligrapherjEU.plucked)generally attacks weakened, dying, or recently felled southern yellow pines and recent logging debris. a big numberipsThey can accumulate when natural events such as storms, ice storms, tornadoes, wildfires, and drought produce large numbers of pine trees suitable for breeding these beetles.
ipsPopulations can also grow after forestry activities, such as B. prescribed burns that get too hot and kill or weaken mandibles; or clear-cutting or thinning jobs that compact soils, injure trees and leave large amounts of branches, trash logs and stumps for breeding sites.
Trees preferred by the mountain beetle (Dendrocton ponderosa) are Lodgepole, Ponderosa, Sugar and Western White Pines. Shoots usually develop in stands of lodgepole pines with closely spaced large diameter trees or in dense stands of pole-sized ponderosa pines. Large-scale eruptions can kill millions of trees.
Nantucket Pine Moth
The Nantucket Pine Moth,Rhyacionia frustrana, is a major forest insect pest in the United States. Its range extends from Massachusetts to Florida and west to Texas. Found in 1971 in San Diego County, California, it was attributed to infested pine seedlings shipped from Georgia in 1967 Kern.
the pale weevil,hylobius disappeared, is the most serious insect pest of pine seedlings in the eastern United States. Large numbers of adult weevils are attracted to freshly cut pine forests, where they breed on old stumps and root systems. Adult weevils that feed on stem bark damage or kill seedlings planted in freshly cut areas.
Hard and soft mealybugs
Mealybugs include a large number of insects in the subfamilyesternorrhyncha.They are commonly found on woody ornamental plants where they infest and damage twigs, twigs, leaves and fruits by feeding on the phloem with their piercing/sucking mouthparts. Symptoms of damage include chlorosis or yellowing, premature leaf drop, restricted growth, branch death, and even plant death.
Shade tree borers include several species of insects that thrive under the bark of trees.woody plants. Most of these insects can only attack dying trees, felled logs or under stress. Stress in woody plants can result from mechanical damage, recent transplants, overwatering or drought. These exercises are often wrongly blamed for damage caused by a pre-existing condition or injury.
southern pine beetle
The southern pine beetle (Dendroctonus frontalis) is one of the most destructive insect predators of pine trees in the southern United States, Mexico and Central America. The insect will attack anyone.southern yellow pinesbut prefers loblolly, shortleaf, Virginia, pond and pitch pines.ipsThe acid beetle and the black turpentine beetle are commonly associated with the buds of the southern pine beetle.
fir worm (Choristoneura fumiferana) is one of the most destructive insects native to the spruce and spruce forests of the northeastern United States and Canada. Periodic outbreaks of spruce fall armyworm are part of the natural cycle of events associated with spruce ripeningbalm for men.
western pine beetle
western pine beetle,Dendroctonus brevicomis, can aggressively attack and kill Ponderosa and Coulter pines of all ages. Extensive tree logging can deplete wood supplies, adversely affect tree height and distribution, disrupt planning and management operations, and increase the risk of wildfires by increasing available fuels.
white pine beetle
In the eastern United States, the white pine beetle,strobing floors, can affect at least 20 different tree species, including ornamental ones. However,eastern white pineIt is the most suitable host for the development of offspring. Two other North American pine beetle species, the Sitka pine weevil and the Engelmann pine weevil, should also be classified.strobing floors.