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Anisandrus dispar

Shot-hole borer

Description

This beetle shows a distinct sexual dimorphism. The females have a cylindrical body 3–3.5 mm in length, while the males are plump and only 2 mm in size. They are so-called ambrosia beetles, i.e. the adults and larvae feed on fungi rather than on the wood itself. In spring, the females excavate short primary and secondary galleries and cultivate symbiotic fungi as a food source. Teneral females and males mate inside the breeding system and most remain there during winter. In April–May, the females emerge while the flightless males die off. They usually colonize recently died, old, weakened trees of any age. During the outbreak, healthy trees may also be attacked. The damage in terms of timber quality loss is minor because the breeding systems remain very shallow.

Symptom

Short galleries in the wood.

Tree Species: Beech, Oak, Hornbeam, Pear, Apple Tree, Plum

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Last observations

There are a total of 1 observations of the species in the system

Anisandrus disparShot-hole borer
Mirec
Number of votes: 0
Published: 13.6.2019

Anisandrus disparShot-hole borer
Mirec
Number of votes: 0
Published: 13.6.2019

Anisandrus disparShot-hole borer
Mirec
Number of votes: 0
Published: 13.6.2019

Anisandrus disparShot-hole borer
Mirec
Number of votes: 0
Published: 13.6.2019

Anisandrus disparShot-hole borer
Mirec
Number of votes: 0
Published: 13.6.2019