Platycampus is a small genus of around nine species from the Palaearctic and Nearctic regions. In Britain and Ireland they are represented by one genus.
Within the Nematinae, the Platycampus can be characterised by the following features. The antennal pedicel is at least as broad as it is long. In the forewing the anal cell is divided into a widely separated basal and apical cell and vein 2r-rs is absent from the marginal cell. Vein 2m-cu connects to the submarginal cell 1Rs. The tarsal claws have a long inner tooth.
Larvae feed on the leaves of species in the Betulaceae and Corylaceae.
Platycampus luridiventris (Fallén, 1808)
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Heitland, W. & Pschorn-Walcher, H. 2005: Biology and parasitoids of the peculiar alder sawfly, Platycampus luridiventris (Fallen) (Insecta, Hymenoptera, Tenthredinidae) - Senckenbergiana Biologica, Frankfurt/M. 85 (2): 215-231
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
MacGillivray, A. D. 1920: Two new species of Platycampus- (Hymenoptera Tenthredinidae). - The Canadian Entomologist, London 52(3): 59-61
Prous, M., Liston, A., Kramp, K., Savina, H., Vårdal, H. and Taeger, A., 2019. The West Palaearctic genera of Nematinae (Hymenoptera, Tenthredinidae). ZooKeys, 875, p.63.
Smith, D. R. 1976: Sawflies of the Holarctic genus Platycampus Schiödte (Hymenoptera: Tenthredinidae). - Proceedings of the entomological Society of Washington, Washington 78(2): 202-207
Togashi, I. 1991: A New Species of the Genus Platycampus Schiödte in Japan (Hymenoptera, Tenthredinidae). - Japanese Journal of Entomology, Tokyo 59(4): 703-706