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Mikiola fagi

Beach gall midge

Description

A tiny fly, only 4-5 mm long. Its larva (about 3-4 mm long) develops inside cylindrical gall formed on beech leaves since the beginning of spring. The gall has a typical barrel-like shape. It is green, yellow, often with red blending. It always occurs on the upper side of leaves. The size of the gall is about 5 - 10 mm. On one leaf may occur several galls.

Symptom

Barrel-like galls on the leaf surface.

Tree Species: Beech

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence

Seasonal frequency of occurrence