Perineura
There are thought to be ten species of Perineura globally, primarily distributed across the palaearctic region. In Britain and Ireland they are represented by one species.
The Perineura can be characterised within the Tenthredininae by the following features. The antennae are filiform and at least twice as long as the width of the head behind the eyes. The occipital carina is well developed around the entire occiput. The clypeus is deeply emarginate. In the forewing the anal cell has vein 2A+3A either touching vein 1A, or connected to 1A by a short, erect cross vein. The hindwing has two middle cells in the female and the male has a peripheral vein. The first abdominal tergite (propodeum is widely excised medially. The tarsal claws have a short inner tooth widely separated from the longer apical tooth.
Species list:
Perineura rubi (Panzer, 1803)
References:
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
Togashi, I. 1993: Sawflies of the genus Perineura Harting from Japan (Hymenoptera: Tenthredinidae). - Journal of Hymenoptera Research, Washington 2(1): 189-194
Zombori, L. 1982: The European genera of Tenthredininae (Hymenoptera: Symphyta, Tenthredinidae). - Acta Zoologica Academiae Scientiarum Hungaricae, Budapest 28(3-4): 455-460