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Dreyfusia piceae

Balsam woolly aphid

Description

It is very similar to silver fir woolly aphid, however, it only lives on trunks of older fir trees (with a trunk diameter of about 15–18 cm at a height of 130 cm) Thus, the trunk of fir appears white as if it were sprinkled with sugar. Individuals of the progrediens generation only rarely crawl up onto needles. Generally, balsam woolly aphid is less harmful than silver fir woolly aphid. It occurs only locally but in denser and less open stands. Sometimes mass outbreaks can occur.

Symptom

Stems of firs are white, looks like springled with sugar. 

Tree Species: Fir

Part of a plant- attacked: Tree trunk

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence

Seasonal frequency of occurrence