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Saperda punctata

Long-horned beetle Saperda punctata

Description

Saperda punctata is a polyphagous longhorn beetle whose larvae develop mainly in dead trunks and thick branches of deciduous trees. Rarely can be seen also on branches and stams of declining trees. It shows a strong preference for elms (Ulmus spp.), but has also been recorded from oaks (Quercus spp.) and willows (Salix spp.). The species is nocturnal and adults appear from May to August. The life cycle lasts one to two years, with larvae overwintering under the bark before pupating in sapwood. Though rarely abundant, its larval activity can reduce the vitality of ornamental trees in urban areas. In Europe, it is widespread but vulnerable in regions where mature elm trees have declined due to Dutch elm disease.

Symptom

Oval exit holes and shallow larval galleries under bark of  branches and trunks.

Tree Species: Elm, Oak, Willow

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes