Nematus

Liston, A. D., Knight, G. T., Heibo, E., Bland, K. P., Barstad, Trond Elling, Blank, S. M., Boeve, J. - L., Fiedler, K., Grearson, K. J., Halstead, A., Jacobs, H. - J., Jansen, E., Lonnve, O., Prous, M., Robinson, J. & Taeger, A., 2012, On Scottish sawflies, with results of the 14 International Sawfly Workshop, in the southern Highlands, 2010 (Hymenoptera, Symphyta), Beiträge Zur Entomologie = Contributions to Entomology 62, pp. 1-68 : 41

Nematus ? cadderensis CAMERON, 1875

Bridge of Garry , larva swept from Betula , 6.vi.2010, leg. Grearson. Emerged ♂ found dead in rearing pot 29.vii.2010. Slide ref. KJG/X151 .

Considered most likely to be Nematus cadderensis on the basis of the larval foodplant. N. ferrugineus Förster, 1854 , which has a similar penis valve, is thought only to use Salix as a larval foodplant.