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Agrilus anxius, the bronze birch borer, is a wood-boring buprestid beetle native to North America, more numerous in the warmer parts of the continent and rare in the north. [1] It is a serious pest on birch trees (Betula), frequently killing them. The river birch Betula nigra is the most resistant species, while other American birches are less so.
Agrilus is a genus of jewel beetles, notable for having the largest number of species (about 3000) of any single genus in the animal kingdom. [3] Species of the genus have a cosmopolitan distribution on all continents except Antarctica, [ 4 ] and feed on a wide variety of flowering plant hosts. [ 5 ]
A number of cultivars with much whiter bark than the normal wild type have been selected for garden planting, including 'Heritage' and 'Dura Heat'; these are notable as the only white-barked birches resistant to the bronze birch borer (Agrilus anxius) in warm areas of the southeastern United States of America. [12] Middle of the tree
Like other North American birches, gray birch is highly resistant to the bronze birch borer (Agrilus anxius). [10] This is due to birches in North America sharing a coevolutionary relationship with the borer, allowing it to develop resistance to the bug. Despite this, the borers can still damage the trees if they are weakened by other means.
Ten species of flatheaded borers of the family Buprestidae feed on spruce and fir, but hemlock is their preferred food source (Rose and Lindquist 1985). [3] As with roundheaded borers, most feeding occurs in dying or dead trees, or close to injuries on living trees. Damage becomes abundant only where a continuing supply of breeding material is ...
Betula pendula, commonly known as silver birch, warty birch, European white birch, [2] or East Asian white birch, [3] is a species of tree in the family Betulaceae, native to Europe and parts of Asia, though in southern Europe, it is only found at higher altitudes. Its range extends into Siberia, China, and southwest Asia in the mountains of ...
In collecting buprestid prey, C. fumipennis has also been recorded collecting emerald ash borer (EAB; Agrilus planipennis), a pest insect known for killing North American species of ash trees. EAB has proven difficult to detect using traditional methods of ground/visual surveys and sticky traps, both of which are costly, labour-intensive and at ...
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