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Dutch elm disease. Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Believed to be originally native to Asia, the disease was accidentally introduced into America, Europe, and New Zealand. In these regions it has devastated native populations of elms that did not ...
Bark beetles have become a vector for the fungus to spread among elm tree groves. The bark beetles often carry spores on their bodies. The spores are easily transferred via twig crotches where they obstruct vessels by gums, tyloses, fungal material and foliage wilts, causing the tree to die. [1] These beetles complete an entire life cycle in ...
A bark beetle is the common name for the subfamily of beetles Scolytinae. [1] Previously, this was considered a distinct family (Scolytidae), but is now understood to be a specialized clade of the "true weevil " family (Curculionidae). Although the term "bark beetle" refers to the fact that many species feed in the inner bark (phloem) layer of ...
Scolytus punctatus Müller, 1776. Scolytus scolytus var. variabilis Sokanovsky, 1958. Scolytus triarmatus Eggers, 1912. Scolytus scolytus, the larger European elm bark beetle or large elm bark beetle, is a 3.5–6 mm long bark beetle species. [4][5] It is of significant importance in Eurasia as a vector of Dutch elm disease.
Ophiostoma ulmi is a species of fungus in the family Ophiostomataceae. It is one of the causative agents of Dutch elm disease. It was first described under the name Graphium ulmi, [2] and later transferred to the genus Ophiostoma. [3] Dutch elm disease originated in Europe in the early 1900s. [4] Elm trees were once an ecologically valuable ...
Scolytus is a genus of bark beetles (subfamily Scolytinae). It includes several species notorious for destroying trees in the forests. The Dutch elm disease is spread in North America by two species : the native elm bark beetle, Hylurgopinus rufipes, and the European elm bark beetle, Scolytus multistriatus. In Europe, while the aforementioned ...
Scolytus multistriatus, the European elm bark beetle or smaller European elm bark beetle, is a bark beetle species in the genus Scolytus.In Europe, while S. multistriatus acts as vector of the Dutch elm disease, caused by the Ascomycota Ophiostoma ulmi, it is much less effective than the large elm bark beetle, S. scolytus.
Hylurgopinus rufipes, known as the native elm bark beetle, is a species of elm bark beetles in the tribe Hylesinini (crenulate bark beetles). It is found in Canada and the United States. It is of particular importance as a vector of Dutch elm disease. It is brownish-red in color and its size ranges from 2.34 mm to 2.9 mm. [1]