Euura nigritarsis Cameron, 1885
Salix caprea © Roelof Jan Koop
the catkin-buds are swollen and unusually firm. For the oviposition the wasp’s ovipositor has pierced through the base of petiole, often leaving a clear scar. Inside a single sawfly caterpillar. Often several buds of the same shoot are galled.
Salicaceae, narrowly monophagous
Beneš (2014a), Kopelke (1999a, 2001a), Liston (2006a), Mol (2013a).