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Description. Elm leaf beetle, side view. The imago (adult beetle) is 6–8 mm in length, and ranges from yellow to green in colour, with a spot on its head, an hourglass mark and two spots on the pronotum, and a broad, dark stripe along the edge of each elytron. The larvae are usually black, occasionally black and yellow, with multiple rows of ...
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 ...
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.
Ips multistriatus. 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.
The boxelder bug (Boisea trivittata), also called box bug, maple bug or, inaccurately, box beetle, is a species of true bug native to eastern North America. The western boxelder bug Boisea rubrolineata is a relative of this species and is native to western North America. Boxelder bugs are found primarily on boxelder trees, as well as on maple ...
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 ...
Monocesta coryli. Monocesta coryli, the larger elm leaf beetle, is a species of skeletonizing leaf beetle in the family Chrysomelidae. It is found in eastern and southeastern North America, from Florida west to Kansas and north to Pennsylvania. It is the only species of the large neotropical genus Monocesta known to be found in the United States.