Euura oblita
Euura oblita is a species of sawfly belonging to the family Tenthredinidae (common sawflies). The larvae feed on the leaves of willows ("Salix" species) and was first described by Jean Guillaume Audinet-Serville in 1823. Description of the gall. These are simple galls with the leaf rolled downwards affecting only one side of the leaf. The female forms the gall before she lays her eggs, with the caterpillar feeding inside the fold. It will also feed on ungalled parts of the leaf, or other leaves. In Great Britain the gall is found on white willow ("Salix alba") and  crack willow ("S. fragilis"). Elsewhere it has been found on weeping willow ("S. babylonica") and almond willow ("S. triandra"). Redfern et al. state that, in Great Britain, it is safe to identify the galls of this species and "Euura destricta" by the foodplants. "E. destricta" feeds on bay willow ("S. pentandra"). In Great Britain, other "Euura" species do not form galls on these host plants. Distribution. The sawfly has been found in Great Britain (England and Wales) and the Netherlands.