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Pityogenes bidentatus

Two-toothed pine beetle

Description

Beetles are 1.8-2.5 mm long. It has two generations per year. Adults of the first generation fly in May-June, and those of the second generation in July-August. The male bores nuptial chambers, where 3 up to 7 females are attracted. Females seek out galleries steeply cut into the surface of wood. In wood is also visible the nuptial chamber. Egg galleries usually branch out from the nuptial chamber forming a star-shape pattern. An outbreak can appear after windbreaks and then it can also severely damage young pine trees and treetops of older ones. It attacks pines with thinner bark, tree trunks in younger stands, twigs and treetops in older ones.

Symptom

Galleries under the bark. Egg galleries usually branch out from the nuptial chamber forming a star-shape pattern.

Tree Species: Pine

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence

Seasonal frequency of occurrence