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Gilletteella cooleyi

Douglas fir woolly aphid

Description

It is the best-known pest of Pseudotsuga menziesii. The larvae overwinter on needles. In spring they start to produce small cotton wool-like wads, with which the needles are literally studded. In May, they lay about 300 eggs under the cotton wool-like wad, from which a new generation hatches. One part of the progeny goes onto the trunk, the other part sucks on young needles which can be seriously damaged. At the place of sucking arises a small yellow spot, the needles turn yellow and fall.

Symptom

In spring larvae start to produce small cotton wool-like wax.

Tree Species: Douglas Fir

Part of a plant- attacked: Leaf / Needle

Pest significance: Harmful

Pest Category: Insects

Invasive Species: Yes

Present in EU: Yes

Last observations

There are a total of 3 observations of the species in the system

Gilletteella cooleyiDouglas fir woolly aphid
martin mesiarkin
Number of votes: 0
Published: 23.4.2024

Gilletteella cooleyiDouglas fir woolly aphid
Pavol Belák
Number of votes: 0
Published: 26.5.2023

Gilletteella cooleyiDouglas fir woolly aphid
Slavo Rell
Number of votes: 0
Published: 4.5.2022

Gilletteella cooleyiDouglas fir woolly aphid
Slavo Rell
Number of votes: 0
Published: 4.5.2022

Gilletteella cooleyiDouglas fir woolly aphid
Slavo Rell
Number of votes: 0
Published: 4.5.2022