Gilletteella cooleyi
The adelgid bug causes a gall on the shoots of Spruce (Picea). The gall is elongated, often curved, and formed of the swollen bases of adjacent spruce needles fused to the shoot. The nymphs live inside chambers within the gall. Unlike other adelgid galls on this host, the needles remain sticking out of the gall, although shorter than usual.
Other Adelgid galls on spruce
Provide photographs of gall
Spruce trees
Common (ref.: British Plant Galls, Redfern & Shirley, 2023)
Not known; few records; probably under-recorded
sue
Holwell NR, path along S edge
31 August 2023
on spruce
Hazel Graves
Leicester Knighton Park
13 December 2025
Overwintering sistentes of Adelges cooleyi on Douglas Fir
sue
Holwell NR, path along S edge
31 August 2023
on spruce
Hazel Graves
Leicester Knighton Park
13 December 2025
Overwintering sistentes of Adelges cooleyi on Douglas Fir
Hazel Graves
Leicester Knighton Park
13 December 2025
Overwintering sistentes of Adelges cooleyi on Douglas Fir
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Species profile
- Species group:
- Bugs
- Kingdom:
- Animalia
- Order:
- Hemiptera
- Family:
- Adelgidae
- Records on NatureSpot:
- 2
- First record:
- 31/08/2023 (Timms, Sue)
- Last record:
- 13/12/2025 (Graves, Hazel)
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% of records within its species group
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Hazel Graves
Leicester Knighton Park
13 December 2025
Overwintering sistentes of Adelges cooleyi on Douglas Fir
