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Aceria macrocheluserinea

Mite Aceria macrocheluserinea

Description

The gall mite Aceria macrocheluserinea causes a felt like swelling (erineum) of the underside of the leaves of field maple Acer campestre. Coatings appears white at first, later on it can turn red or brown. Numerous mites live in a dense hairs shelter.

Symptom

Creamy-white coatings on the underside of the leaves. Later they change color to red or brown.

Tree Species: Maple

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Mites

Invasive Species: No

Present in EU: Yes