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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 ]
Although the term "bird of prey" could theoretically be taken to include all birds that actively hunt and eat other animals, [4] ornithologists typically use the narrower definition followed in this page, [5] excluding many piscivorous predators such as storks, cranes, herons, gulls, skuas, penguins, and kingfishers, as well as many primarily ...
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.
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Archaeologists in Spain have unearthed a 2,100-year-old bronze hand that both astounded and puzzled experts. At the foot of a castle on Mount Irulegi , the invading ancient Roman army attacked and ...
Critically endangered (CR) species face an extremely high risk of extinction in the wild. As of December 2019, the International Union for Conservation of Nature (IUCN) listed 223 critically endangered avian species, including 19 which are tagged as possibly extinct or possibly extinct in the wild.