Euura nigritarsis Cameron, 1885
Hymenoptera, Tenthredinidae
on Salix

Salix caprea © Roelof Jan Koop
gall
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.
hostplants
Salicaceae, narrowly monophagous
Salix caprea.
references
Beneš (2014a), Kopelke (1999a, 2001a), Liston (2006a), Mol (2013a).
12/03/2017
Last modified 21.iv.2020