Euura pustulator
Euura pustulator is a species of sawfly belonging to the family Tenthredinidae. The larvae feed internally in a gall formed on the leaves of tea-leaved willow and diamondleaf willow.
Description of the gall
The thin-walled gall is ovoid, bladder-like, usually green and may broaden the leaf. It is 11 mm long and 5 mm across and is found on tea-leaved willow and diamondleaf willow.Euura pustulator is one of two closely related species in the Euura vesicator subgroup; the other being E. vesicator.