Coraebus florentinus

Oak burncow

Attractive and colouful beetle. Develops for two years. Host plants are oaks, preferring grove-like stands in dry habitats and at forest edges. Adults fly in June–July, can be found in the crown of the host plant. Females oviposit on young twigs. The hatched larvae bore into the twig and chew long spiral tunnels in the sapwood (so called “death-ring”), reaching 1 m in length. The attacked branches often die. Widespread in oak forests of mountainous and hilly regions, but rarely seen due its cryptic way of life. More common in warm, southern regions. Also other members of that genus live in Europe, Coraebus rubi, C. elatus etc. If occur in large numbers, these species can reduce the vitality of trees in the forest. In parks, they cause unwanted die back of branches. They prefer southern, warm locations. Similar damages can be caused also by Coraebus undatus.

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Symptom

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Spiral tunnels under the bark and in the sapwood of branches.

Tree Species: Oak

Part of a plant- attacked: Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Pest group: Insect