Ireland

Pear sucker

Cacopsylla pyri
List of symptoms/signs
Fruit  -  honeydew or sooty mould
Inflorescence  -  honeydew or sooty mould
Leaves  -  abnormal forms
Leaves  -  abnormal leaf fall
Leaves  -  honeydew or sooty mould
Leaves  -  necrotic areas

Symptoms
Sucking of larvae and adults, when populations are high, can produce pustules on branchlets and spots on leaves. This can sometimes lead to deformation of the leaves. Considerable damage is caused by the honeydew secreted by the larvae which stains leaves and fruit and which serves as the growth medium of black sooty mould.