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Phyllonorycter klemannella

Dark alder midget

Description

The larvae of Phyllonorycter klemannella, a moth belonging to the Gracillariidae family, feed on the leaves of Alnus glutinosa and Alnus incana. They create tentiform mines on the lower surface of the leaves, positioned between two side veins, often far from the midrib. The leaf is swollen and light green above the site of the mine. Sometimes multiple mines can be found on a single leaf. Pupation occurs within a white cocoon inside the mine. This moth species is found throughout Europe.

Symptom

Mine on the underside of the leaf. The leaf is swollen and light green above the site of the mine.

Tree Species: Alder

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes