Euura triandrae
Euura triandrae
The larva of the sawfly Euura triandrae cause galls on Almond Willow (Salix triandra). The gall is bean-shaped, starting off green then maturing red. It is smooth and thick-walled, protruding through both the upper and lower leaf surface.
Similar galls are found on Crack Willow, Sallows and White Willow. The host plant must be accurately identified (Almond Willow is a small tree or shrub, much planted for basket withies, and has glabrous narrow glossy leaves, finely serrate, with large stipules)
Gall 
Adult 
If a gall, it is essential to say which tree species it was on and provide a photo showing host plant shoots as well as the gall.
The galls are only found on Salix triandra (Almond Willow).
May - September (gall)
Rare but probably under-recorded.
Unknown
Graham Calow
Foot of Croft Hill
10 August 2017
galls on Salix triandra
sue
Bagworth CP, lakes
30 June 2018
sue
Bagworth CP, lakes
30 June 2018
Gall on Almond Willow
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All NatureSpot records
Euura triandrae
The larva of the sawfly Euura triandrae cause galls on Almond Willow (Salix triandra). The gall is bean-shaped, starting off green then maturing red. It is smooth and thick-walled, protruding through both the upper and lower leaf surface.