Superficially very similar to the other Rhogogaster species. However, this species can be readily distinguished from the others. On the head, the black markings that enclose the ocelli are open at the front to form a ω-shape rather than a figure of eight. The tergites are mainly green with two black spots laterally. These dots are sometimes fused and rarely absent. The tarsal pulvilli are very small in both sexes being about one-fifth the length of the next tarsal segment.
Larvae feed on a broad range of trees.
Size: 10 - 12mm
Distribution: England, Scotland, Wales
Flight period: May to July
Plant associations: Polyphagous. Alnus spp., Betula spp., Corylus spp., Fraxinus spp., Prunus spp., Rosa spp., Salix spp. and Sorbus spp. (a wide variety of trees)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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