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Both the adults and larvae feed on the emergent leaves of the elm. Repeated heavy infestation rarely kills the tree outright, but weakens it, rendering it vulnerable to disease. Falling branches encourage elm bark beetles (Scolytus multistriatus and S. schevyrewi) to proliferate; the beetles are vectors of Dutch elm disease. [4]
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.
Elm bark beetle trap on an elm tree. 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.
In Belgium, elm die-back and death was observed in 1836 and 1896 in Brussels, and in 1885–1886 in Ghent. In the later outbreaks the die-back was attributed to the elm bark beetle. [86] It has been suggested that "for thousands of years elms have flourished in natural balance with the scolytidae, combating occasional infections of Dutch elm ...
May 17—New Mexico has had many invaders over the centuries, large, medium and small. The latest is in the latter group: It's a dark, half-inch-long insect with red markings on its belly, known ...
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 .
For crop growers, managing this particular beetle is an easy task compared to other pests, Hudson said. “Compared to other white grub species that can be problematic to a variety of crops like ...
Generally numerous, these metallic green and brown insects are known to feed on over 300 species of plants, including roses, ornamental trees, flower beds, orchards, vineyards and vegetable gardens.