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Hylesinus wachtli orni

Bark beetle Hylesinus wachtli orni

Description

The adult insect is only 2–3 mm long. The pair of its maternal tunnels is at right angle with the tree trunk axis and only about 3 cm long. The larval galleries are dense and parallel, adjoining one another almost throughout the entire development cycle. The larvae pupate in sapwood. The insect is more commonly found in thinner branches and its larval galleries in the sapwood are quite visible.

Symptom

The two larval corridors perpendicular to the trunk axis are only about 3 cm long. The larval corridors are densely next to each other, touching each other for almost the entire development.

Tree Species: Ash

Part of a plant- attacked: Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes