Scolytus rugulosus

Shothole borer

It is a polyphagous species with a body length of 1.4 to 3.2 mm. It mainly attacks weakened fruit trees. It is widespread throughout Europe and, depending on the conditions, has 1 to 2 generations per a year. After mating, the female bite a short longitudinal maternal corridor - 1 to 4 cm long. The larval corridors run perpendicular to the mother corridor, later twisting in different ways. The larvae overwinter and the subsequent pupae cradle in the wood. In some countries (like Turkey for example), this specie is considered an apricot pest.

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Exit holes with a diameter of approximately 1 to 1.5 mm. Under the bark are short longitudinal maternal corridors. The infested tree dries up in a few years. Often only the infested branch dries out. Woodpeckers are searching for overwintering larvae and thus markin the infested trees.

Tree Species: Cherry, Pear, Apple Tree, Apricots, Plum

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Pest group: Insect

Affected part of wood: Bark, Underbark area

Depth of damages: Under bark only

The extent of damage: Lokally

Prevalence in Europe: Very common

Damaged products: Firewood, Fresh timber logs (water still in the sapwood), Stored timber logs (dried wood)