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Neuroterus quercusbaccarum

Common spangle gall

Description

The species has two alternating generations. The spring sexual generation develops in commonly gregarious, unilocular, globular, berry-like galls (4-8 mm in diameter) on catkins, and can also develop on the leaf lamina. The adults emerge from the galls in June. The autumn generation develops in spangle gall (4-6 mm in diameter, 2 mm thick) on the underside of leaves, rarely on the upper side. This gall is more abundant on trees showing late budburst. The asexual spangle galls fall in August, September, adults emerging the following spring.

Symptom

The spring sexual generation develops in commonly gregarious, unilocular, globular, berry-like galls (4-8 mm in diameter) on catkins, and can also develop on the leaf lamina. The autumn generation develops in spangle gall (4-6 mm in diameter, 2 mm thick) on the underside of leaves, rarely on the upper side.

Tree Species: Oak

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Last observations

There are a total of 25 observations of the species in the system

Neuroterus quercusbaccarumCommon spangle gall
iva
Number of votes: 0
Published: 13.5.2023

Neuroterus quercusbaccarumCommon spangle gall
Karol Ox
Number of votes: 0
Published: 29.1.2023

Neuroterus quercusbaccarumCommon spangle gall
Karol Ox
Number of votes: 0
Published: 29.1.2023

Neuroterus quercusbaccarumCommon spangle gall
Marián Slamka
Number of votes: 0
Published: 22.10.2022

Neuroterus quercusbaccarumCommon spangle gall
Lubo
Number of votes: 0
Published: 22.10.2022