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Andricus caputmedusae

Gall wasp Andricus caputmedusae

Description

A spectacular gall is formed by this species. Known only from the bud galls of the asexual generation. A bud changes into a “hairy” gall with a lot of outgrowths. Individual galls may reach 6 cm in diameter and are single-chambered. Young galls are bright pink and sticky, mature are brown and sticky.The larva develops inside the gall. The gall remains on a tree for more years. Diplolepis rosae creates very similar galls on roses.

Symptom

A “hairy” gall with a lot of outgrowths.

Tree Species: Oak

Part of a plant- attacked: Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Last observations

There are a total of 19 observations of the species in the system

Andricus caputmedusaeGall wasp Andricus caputmedusae
milan
Number of votes: 0
Published: 5.8.2025

Andricus caputmedusaeGall wasp Andricus caputmedusae
milan
Number of votes: 0
Published: 29.4.2025

Andricus caputmedusaeGall wasp Andricus caputmedusae
Marián Slamka
Number of votes: 0
Published: 2.4.2025

Andricus caputmedusaeGall wasp Andricus caputmedusae
Marián Slamka
Number of votes: 0
Published: 2.4.2025

Andricus caputmedusaeGall wasp Andricus caputmedusae
majo
Number of votes: 0
Published: 29.11.2024