Pristiphora pallidiventris - Pristiphora pallidiventris group
In the female, this species is rather variable and the abdomen can range from nearly completely black to completely yellow. The sawsheath is broad and apically emarginate when viewed from above. Males can be distinguished by the penis valves.
Pristiphora pallidiventris larvae feed on meadowsweet, wood avens, water avens, raspberry and brambles.
Size: 4.5 - 5.5mm
Distribution: England, Scotland, Wales, Ireland
Flight period: April to June and July to September
Plant associations: Filipendula ulmaria, Geum urbanum, Geum rivale, Rubus idaeus and Rubus fruticosus (meadowsweet, wood avens, water avens, raspberry and brambles)
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.D., 1981. Pristiphora (Lygaeophora) lanifica (Zaddach, 1882) new to Britain (Hymenoptera: Tenthredinidae). Entomologist's gazette.
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
Prous, M., Kramp, K., Vikberg, V. and Liston, A., 2017. north-Western Palaearctic species of Pristiphora (hymenoptera, tenthredinidae). Journal of Hymenoptera Research, Vol. 59