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Andricus curvator

Gall wasp Andricus curvator

Description

On leaves are formed green sexual galls, about 5 mm in size, similar to lumps. Their upper part is brownish red. The galls are visible from both sides of the leaf. They occur on a veinlet, less commonly in the interveinal space. The larva lives in the gall where it also pupates. After gall having dried out, a matured wasp leaves the gall. The adults occur in spring, in March and April, the second (sexual) generation in June.

Symptom

On leaves are formed green sexual galls, about 5 mm in size, similar to lumps. Their upper part is brownish red. The galls are visible from both sides of the leaf.

Tree Species: Oak

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes