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Pemphigus vesicarius

Poplar gall aphid Pemphigus vesicarius

Description

The colony of this aphid lives in a blister-like, thin-walled, irregularly shaped gall with a diameter of 3-4 cm. Green, later from brown to black. The gall does not fall off and stays dry on the tree for several years. The host tree is black poplar and its hybrids. More abundant in the south of Europe. A southern element.

Symptom

When young green, later on brown or even black, blister-like, thin-walled, irregularly shaped gall with a diameter of 3-4 cm.

Tree Species: Poplar

Part of a plant- attacked: Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes