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Aceria campestricola

Mite Aceria campestricola

Description

On the top side of leaves are found groups of tiny up to 1.5 - 2 mm long galls. They are pale green or yellow, narrowed at the base. They are caused by sucking of the mite. They occur frequently in large number. Galls are randomly placed on upper side of leaf. Large number of galls may result in leaf deformation. The mite is very small and cannot be seen with the naked eye. Aceria ulmi causes similar deformations.

Symptom

 Small growths on the top of the leaf.

Tree Species: Elm

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Mites

Invasive Species: No

Present in EU: Yes