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Aceria tenella
Mite Aceria tenella
Description
The species causes tiny swellings on the lower side of the leaf at the fork of side and main veinlets which then become swollen and hairy. On the upper side of the leaf, above the damaged place appears a small bulges. The shape of damage is always quite regular and it occurs on the whole leaf.
Symptom
Swellings situated on lateral veins.
Tree Species: Hornbeam
Part of a plant- attacked: Leaf / Needle
Pest significance: Less harmful
Pest Category: Mites
Invasive Species: No
Present in EU: Yes
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