Euura proxima

Formerly known as Pontania proxima.

The single large White Willow growing at the Cathedral Meadows has proved to be a productive plant for locating galls of this sawfly. So far I haven't found any adults.

Euura proxima gall on White Willow, North Elmham Cathedral Meadows (Norfolk, UK), 3rd August 2019

Euura proxima galls on White Willow, North Elmham Cathedral Meadows (Norfolk, UK), 16th September 2020

Euura proxima galls on White Willow, North Elmham Cathedral Meadows (Norfolk, UK), 6th October 2021

My willow identification skills aren't great and I wasn't sure which species of willow this was at the time. I think it must be White Willow though, or a Crack Willow hybrid perhaps. At least I think the leaves are too narrow for Almond Willow (which would make the gall Euura triandrae) or any of the sallows (Euura bridgmanii).

Euura proxima gall on White/Crack Willow, Wendling Beck Environment Project (Norfolk, UK), 13th August 2021

I *think* the willow these were on was Crack Willow Salix fragilis. The lower two photos are the same gall showing top and bottom.

Euura proxima galls on Crack Willow, Wendling Beck Environment Project (Norfolk, UK), 26th May 2023