Dolerus gessneri ANDRÉ, 1880

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 : 35

Dolerus gessneri ANDRÉ, 1880

Malleny Woods, 2 ♀♀, 2 ♂♂, 12.vi.2010, leg. Liston.

Two of the females (Malleny, Bavelaw) have red patches laterally on some abdominal terga. Similarly coloured specimens apparently occur throughout the European range of D. gessneri but in the North increasingly dominate. These have often been identified as Dolerus labiosus Konow, 1897 or D. gessneri labiosus by earlier workers. A taxonomic distinction is not justified ( Goulet 1986), as was already recognized by Benson (1934). Superficially, apart from its conspicuously larger size, D. gessneri may in Britain most easily be confused with D. yukonensis .