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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 .
Bark beetles enter trees by boring holes in the bark of the tree, sometimes using the lenticels, or the pores plants use for gas exchange, to pass through the bark of the tree. [3] As the larvae consume the inner tissues of the tree, they often consume enough of the phloem to girdle the tree, cutting off the spread of water and nutrients.
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.
Empowered by the Dutch Elm Disease (Local Authorities) (Amendment) Order 1988, [23] local authorities may order the destruction of any infected trees or timber, although in practice they usually do it themselves, successfully reducing the numbers of elm bark beetle Scolytus spp. [24] Sanitary felling has also, to date, preserved most of the ...
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 again acts as vector for infection, it is much less effective than the large elm bark beetle Scolytus scolytus.
Elm bark beetle is a common name for several insects and may refer to: Hylurgopinus rufipes, native to North America; Scolytus multistriatus, native to Europe and ...
Falling branches encourage elm bark beetles (Scolytus multistriatus and S. schevyrewi) to proliferate; the beetles are vectors of Dutch elm disease. [4] Elm leaf beetles become active in the spring once temperatures rise above 52 °F (11 °C). In fact, weather is one of the most limiting factors in their population growth.
Dutch elm disease arises from two related species of fungi in the genus Ophiostoma, spread by elm bark beetles. Another fungus, Nectria coccinea, causes Beech bark disease, as does Bulgaria polymorpha. Ash canker results from Nectria galligena or Pseudomonas savastanoi, and most trees are vulnerable to Honey Fungus (Armillaria mellea).