Tenthredopsis nassata (LINNAEUS, 1767)

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 : 55

Tenthredopsis nassata (LINNAEUS, 1767)

Old Bridge of Tilt , 1 ♀, 1 ♂, 6.vi.2010, leg. LØnnve .

1 ♀, Longniddry Bents, 11.vi.2010, leg. Liston.

The female Scottish specimens are darker and smaller in average body length than Central European T. nassata females as characterized by Blank & Ritzau (1998). However, colouration of the Scots specimens of both sexes is highly variable, particularly the amount of black on the dorsum of abdomen and mesopleura. Cameron (1882) referred to such dark British specimens under a number of names that are at present generally regarded as synonyms of T. nassata . The male of T. nassata is not at present reliably distinguished from T. scutellaris (Fabricius, 1804) . Only a single female T. scutellaris possessing the same highly characteristic colour pattern as Central European T. scutellaris (see Blank & Ritzau 1998) was found during the workshop excursions.