Eriosoma lanuginosum
Eriosoma lanuginosum is an aphid which causes the formation of a leaf gall on Elm which takes the form of a bladder looking like a pale green egg or pear which may be 6 or even 8 cm long and nearly as wide. The gall is more often seen than the adult aphid.
Gall 
Adult 
state the host plant, and provide a photo
On elms, usually small leaved elms
Look for galls in June and July although they may persist over winter in a hardened form.
Aphids feed inside the gall protected from predators.
Uncommon in Britain.
Uncommon in Leicestershire and Rutland.
,_gall.JPG)
Graham Calow
Granitethorpe Quarry, Sapcote
23 June 2010
on English Elm - 2nd VC55 record_gall.JPG)
Graham Calow
Granitethorpe Quarry, Sapcote
23 June 2010
on English Elm - 2nd VC55 record
Peter Smith
Cropston, Brooky Lane
05 July 2023
Peter Smith
Cropston, Brooky Lane
05 July 2023
Alate
steven lewis
Ironstone Banks
23 June 2023
steven lewis
Ironstone Banks
23 June 2023
steven lewis
Ironstone Banks
23 June 2023
Peter Smith
Cropston, Brooky Lane
05 July 2023
,_gall.JPG)
_gall.JPG)
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Species profile
- Species group:
- Bugs
- Kingdom:
- Animalia
- Order:
- Hemiptera
- Family:
- Aphididae
- Records on NatureSpot:
- 6
- First record:
- 23/06/2010 (Calow, Graham)
- Last record:
- 26/06/2025 (Graves, Hazel)
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