Gardening Help Search. Female beetles cause damage to fruit trees, nut trees and other woody ornamentals by boring extensive tunnels in the wood of their hosts and by introducing fungi. This aggressive pest is of concern because it has a wide variety of hosts and unlike many pests, will also attack apparently healthy plants. Granulate ambrosia beetles Xylosandrus crassiusculus infest over different kinds of plants; common hosts include fruit trees, nut trees, golden rain tree, dogwood, magnolia and maples. Symptoms of infestation include 2 mm round entrance holes in trunks of young trees and in branches 1 to 2. Toothpick-like strands up to 1.
Preventing Granulated Ambrosia Beetles: Granulate Ambrosia Beetle Prevention And Treatment
Dougherty County Horticulture Topics | Granulate Ambrosia Beetle Damage
Granulate ambrosia beetle, Xylosandrus crassiusculus Mot. The insect was previously known as the Asianambrosia beetle. Woody ornamental nursery plants and fruit trees arecommonly affected. In spring or even in late winter around mid-February , a large number of beetles can emerge and attack tree species, especially when they are young and stressed. The female beetles land on thebark of woody trees before boring through the inner bark andsoftwood of the tree, finally settling in the heartwood wherethey begin carving galleries. Figure 1b. Photo: G.
The granulate ambrosia beetle Xylosandrus crassiusculus measures only 2 to 3 millimeters in length, but it can completely devastate over species of deciduous trees. The female of the species tunnels into trees and excavates chambers where she lays eggs and raises her offspring. Granulate ambrosia beetle damage comes from the tunneling activities of the female insect and the ambrosia fungus that she introduces into the wood.
The granulate ambrosia beetle, Xylosandrus crassiusculus Motschulsky , once referred to as the 'Asian' ambrosia beetle is a minute ambrosia beetle of Asian origin that was first detected in the continental United States near Charleston, South Carolina Anderson Xylosandrus crassiusculus can become abundant in urban, agricultural, and forested areas. It has been reported as a pest of nursery stock and young trees in the Old World tropics Browne , Schedl and of peach trees in South Carolina Kovach and Gorsuch It is a potentially serious pest of ornamentals and fruit trees and is reported to be able to infest most trees and some shrubs azalea , except for conifers Cole