Pristiphora tetrica - Pristiphora depressa group
Added to the UK list in 2023 after a female was found by Martin Greenland in Norfolk. It is unclear whether or not this is an introduced species or an overlooked native. The head in dorsal view is black, as are the thorax, the basal abdominal tergites and the legs for the most part. The black supraclypeal area distinguishes this species from depressa and subbifida and the colour pattern is characteristic, at least in the Northern Palaearctic. Both genders can be confirmed by genitalia extraction.
Pristiphora tetrica larvae feed singly on Sycamore and Cretan Maple where planted, eating from the leaf edge.
Size: 5.0 - 7.0mm
Flight period: May to July
Plant associations: Acer pseudoplatanus (Sycamore) and Acer sempervirens (Cretan Maple)
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. & Späth, J. 2008: On the sawflies of Cyprus, with a revision of the Pristiphora subbifida species group (Hymenoptera, Symphyta). - Mitteilungen der Münchner Entomologischen Gesellschaft, München 98: 99-120
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