Two other North American pine weevil species-the Sitka spruce weevil.

its value. Ambrosia beetles feed on the fungus rather than the wood. The most obvious sign of an ambrosia beetle attack is the fine, white boring dust that accumulates at the base of the tree and in the bark crevices (fig.

3). Adults bore straight into the tree, creating perfectly round, small-diameter holes. Bark beetles bore into trees and reproduce under the bark.

The Colorado potato beetle has black and light orange or yellow stripes.

These are common tree bugs; there are different species of bark beetles in the United States. Because of this body shape, the larvae create oval or flattened holes when they dig into wood. The tunnels that these insects create can girdle tree trunks and branches, putting trees at severe risk.

Round-headed borers (longhorn beetle): In their adult form, round-headed borers are longhorned beetles that can have antennae longer than their bodies. The larvae of round-headed borers have a round shape. Apr 25, Generally, tree beetles are attracted to trees such as cedar, spruce, pine and fir.

Stress to woody plants may be the result of mechanical injury, recent transplanting, over-watering, or drought.

Other trees that can be affected by beetles include fruit trees, cypress, arborvitae, redwood and larch. Bark beetles feed on the cambium layer of the tree - the part of the tree that is continuously growing and producing new cells within the tree. The Asian longhorn beetle is a pest of hardwood trees in roadside plantings and plantations in China and has now become a pest in Europe and the US.

In the US it tends to attack Acer species. The citrus longhorn beetle is a pest of over species of tree and shrub. Aug 09, The green June beetle gets its name from the fact is it prevalent in early summer during the day. This green flying beetle loves to feed on ripening fruit and use the horn in the front of their body to dig into the fruit.

The dull green wing covers (elytra) on its back protect delicate brown wings. Green June beetle identificationEstimated Reading Time: 8 mins.