A smaller black and yellow species. The metapleura and scutellum entirely black. The two basal segments of the antennae are yellow as are the tegulae and the edge of the pronotum. On the abdomen the apical margin of the first tergite is yellow and all of the 5th tergite and the apical tergites are yellow. The fore wing stigma is weakly bicolorous being yellow with a darker apex.
Associated with dry heaths and chalk downs. Larvae feed on St John's-wort.
Size: 8 - 10mm
Flight period: May to June
Plant associations: Hypericum perforatum (perforate St John's-wort)
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168
Fekete, K. (2018) Beginner’s guide to identifying British Tenthredo, Natural History Museum, London. http://www.nhm.ac.uk/content/dam/nhmwww/take-part/identification-trainers/sawflies-guide-id-trainees.pdf [Accessed 26Apr2019]