Chrysobothris affinis

Pit oak splendour beetle

A 12-15 mm long shiny brown beetle with six ochre spots on elytra. Larvae develop in lower trunk parts of old and weakened oaks, occasionally also beeches. It very often flies onto freshly cut down trunks. In sunny weather the beetles crawl throughout the trunks and quickly fly away if disturbed.

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Symptom

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Galleries under the bark. On the trunks of standing trees, there are serpentine, gradually expanding galleries under the bark. In sunny summer days, fast flying beetles on fallen trees.

Tree Species: Beech, Oak

Part of a plant- attacked: Tree trunk

Pest significance: Harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Pest group: Insect

Affected part of wood: Sapwood

Depth of damages: Bark, Under bark only, Up to 0,5 cm depth, Up to 2 cm depth, Up to 5 cm depth

The extent of damage: Whole trunk

Prevalence in Europe: Common

Damaged products: Firewood, Fresh timber logs (water still in the sapwood), Furniture, Lumber, boards and prisms, Wooden house constructions